From 8d01e58d3f473100bffc535573c50bf0f7865179 Mon Sep 17 00:00:00 2001 From: Philip Paeps Date: Tue, 2 Jul 2019 01:06:03 +0000 Subject: [PATCH 1/3] Import tzdata 2019b --- Makefile | 45 +++++++--- NEWS | 104 +++++++++++++++++++++-- africa | 168 ++++++++++++++++++++++++++++++------- antarctica | 14 ++-- asia | 216 ++++++++++++++++++++++++++---------------------- australasia | 112 ++++++++++++++++++------- backzone | 2 +- checktab.awk | 9 +- europe | 110 +++++++++++++----------- factory | 2 +- northamerica | 165 ++++++++++++++++++++---------------- pacificnew | 2 +- southamerica | 66 +++++++-------- systemv | 2 +- theory.html | 26 +++--- version | 2 +- zishrink.awk | 44 +++++----- zone.tab | 5 +- zone1970.tab | 3 +- zoneinfo2tdf.pl | 2 +- 20 files changed, 719 insertions(+), 380 deletions(-) diff --git a/Makefile b/Makefile index 25f1d357867b..fec0a4f7eb36 100644 --- a/Makefile +++ b/Makefile @@ -35,11 +35,13 @@ DATAFORM= main LOCALTIME= GMT -# If you want something other than Eastern United States time as a template -# for handling ruleless POSIX-style timezone environment variables, +# The POSIXRULES macro controls interpretation of nonstandard and obsolete +# POSIX-like TZ settings like TZ='EET-2EEST' that lack DST transition rules. +# In the reference implementation, if you want something other than Eastern +# United States time as a template for handling these settings, you can # change the line below (after finding the timezone you want in the # one of the $(TDATA) source files, or adding it to a source file). -# A ruleless environment setting like TZ='CST6CDT' uses the rules in the +# A setting like TZ='EET-2EEST' is supposed to use the rules in the # template file to determine "spring forward" and "fall back" days and # times; the environment variable itself specifies UT offsets of standard and # daylight saving time. @@ -49,6 +51,17 @@ LOCALTIME= GMT # Use the command # make zonenames # to get a list of the values you can use for POSIXRULES. +# +# If POSIXRULES is empty, no template is installed; this is the intended +# future default for POSIXRULES. +# +# Nonempty POSIXRULES is obsolete and should not be relied on, because: +# * It does not work correctly in popular implementations such as GNU/Linux. +# * It does not work in the tzdb implementation for timestamps after 2037. +# * It is incompatible with 'zic -b slim' if POSIXRULES specifies transitions +# at standard time or UT rather than at local time. +# In short, software should avoid ruleless settings like TZ='EET-2EEST' +# and so should not depend on the value of POSIXRULES. POSIXRULES= America/New_York @@ -231,6 +244,13 @@ LDLIBS= # other than simply getting garbage data # -DUSE_LTZ=0 to build zdump with the system time zone library # Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below. +# -DZIC_BLOAT_DEFAULT=\"slim\" to default zic's -b option to "slim", and +# similarly for "fat". Fat TZif files work around incompatibilities +# and bugs in some TZif readers, notably readers that mishandle 64-bit +# data in TZif files. Slim TZif files are more efficient and do not +# work around these incompatibilities and bugs. If not given, the +# current default is "fat" but this is intended to change as readers +# requiring fat files often mishandle timestamps after 2037 anyway. # -DZIC_MAX_ABBR_LEN_WO_WARN=3 # (or some other number) to set the maximum time zone abbreviation length # that zic will accept without a warning (the default is 6) @@ -364,7 +384,9 @@ ZIC= $(zic) $(ZFLAGS) # To shrink the size of installed TZif files, # append "-r @N" to omit data before N-seconds-after-the-Epoch. -# See the zic man page for more about -r. +# You can also append "-b slim" if that is not already the default; +# see ZIC_BLOAT_DEFAULT above. +# See the zic man page for more about -b and -r. ZFLAGS= # How to use zic to install TZif files. @@ -388,6 +410,9 @@ KSHELL= /bin/bash # Name of curl , used for HTML validation. CURL= curl +# Name of GNU Privacy Guard , used to sign distributions. +GPG= gpg + # The path where SGML DTDs are kept and the catalog file(s) to use when # validating HTML 4.01. The default should work on both Debian and Red Hat. SGML_TOPDIR= /usr @@ -562,7 +587,9 @@ install: all $(DATA) $(REDO) $(MANS) '$(DESTDIR)$(LIBDIR)' \ '$(DESTDIR)$(MANDIR)/man3' '$(DESTDIR)$(MANDIR)/man5' \ '$(DESTDIR)$(MANDIR)/man8' - $(ZIC_INSTALL) -l $(LOCALTIME) -p $(POSIXRULES) \ + $(ZIC_INSTALL) -l $(LOCALTIME) \ + `case '$(POSIXRULES)' in ?*) echo '-p';; esac \ + ` $(POSIXRULES) \ -t '$(DESTDIR)$(TZDEFAULT)' cp -f $(TABDATA) '$(DESTDIR)$(TZDIR)/.' cp tzselect '$(DESTDIR)$(BINDIR)/.' @@ -781,12 +808,6 @@ CHECK_CC_LIST = { n = split($$1,a,/,/); for (i=2; i<=n; i++) print a[1], a[i]; } check_sorted: backward backzone iso3166.tab zone.tab zone1970.tab $(AWK) '/^Link/ {print $$3}' backward | LC_ALL=C sort -cu $(AWK) '/^Zone/ {print $$2}' backzone | LC_ALL=C sort -cu - $(AWK) '/^[^#]/ {print $$1}' iso3166.tab | LC_ALL=C sort -cu - $(AWK) '/^[^#]/ {print $$1}' zone.tab | LC_ALL=C sort -c - $(AWK) '/^[^#]/ {print substr($$0, 1, 2)}' zone1970.tab | \ - LC_ALL=C sort -c - $(AWK) '/^[^#]/ $(CHECK_CC_LIST)' zone1970.tab | \ - LC_ALL=C sort -cu touch $@ check_links: checklinks.awk $(TDATA_TO_CHECK) tzdata.zi @@ -1051,7 +1072,7 @@ tzdata$(VERSION).tar.gz.asc: tzdata$(VERSION).tar.gz tzdata$(VERSION)-rearguard.tar.gz.asc: tzdata$(VERSION)-rearguard.tar.gz tzdb-$(VERSION).tar.lz.asc: tzdb-$(VERSION).tar.lz $(ALL_ASC): - gpg2 --armor --detach-sign $? + $(GPG) --armor --detach-sign $? TYPECHECK_CFLAGS = $(CFLAGS) -DTYPECHECK -D__time_t_defined -D_TIME_T typecheck: typecheck_long_long typecheck_unsigned diff --git a/NEWS b/NEWS index 9d0e9c0ee3fa..8b05f8f13084 100644 --- a/NEWS +++ b/NEWS @@ -1,6 +1,100 @@ News for the tz database -Release 20198 - 2019-03-25 22:01:33 -0700 +Release 2019b - 2019-07-01 00:09:53 -0700 + + Briefly: + Brazil no longer observes DST. + 'zic -b slim' outputs smaller TZif files; please try it out. + Palestine's 2019 spring-forward transition was on 03-29, not 03-30. + + Changes to future timestamps + + Brazil has canceled DST and will stay on standard time indefinitely. + (Thanks to Steffen Thorsen, Marcus Diniz, and Daniel Soares de + Oliveira.) + + Predictions for Morocco now go through 2087 instead of 2037, to + work around a problem on newlib when using TZif files output by + zic 2019a or earlier. (Problem reported by David Gauchard.) + + Changes to past and future timestamps + + Palestine's 2019 spring transition was 03-29 at 00:00, not 03-30 + at 01:00. (Thanks to Sharef Mustafa and Even Scharning.) Guess + future transitions to be March's last Friday at 00:00. + + Changes to past timestamps + + Hong Kong's 1941-06-15 spring-forward transition was at 03:00, not + 03:30. Its 1945 transition from JST to HKT was on 11-18 at 02:00, + not 09-15 at 00:00. In 1946 its spring-forward transition was on + 04-21 at 00:00, not the previous day at 03:30. From 1946 through + 1952 its fall-back transitions occurred at 04:30, not at 03:30. + In 1947 its fall-back transition was on 11-30, not 12-30. + (Thanks to P Chan.) + + Changes to past time zone abbreviations + + Italy's 1866 transition to Rome Mean Time was on December 12, not + September 22. This affects only the time zone abbreviation for + Europe/Rome between those dates. (Thanks to Stephen Trainor and + Luigi Rosa.) + + Changes affecting metadata only + + Add info about the Crimea situation in zone1970.tab and zone.tab. + (Problem reported by Serhii Demediuk.) + + Changes to code + + zic's new -b option supports a way to control data bloat and to + test for year-2038 bugs in software that reads TZif files. + 'zic -b fat' and 'zic -b slim' generate larger and smaller output; + for example, changing from fat to slim shrinks the Europe/London + file from 3648 to 1599 bytes, saving about 56%. Fat and slim + files represent the same set of timestamps and use the same TZif + format as documented in tzfile(5) and in Internet RFC 8536. + Fat format attempts to work around bugs or incompatibilities in + older software, notably software that mishandles 64-bit TZif data + or uses obsolete TZ strings like "EET-2EEST" that lack DST rules. + Slim format is more efficient and does not work around 64-bit bugs + or obsolete TZ strings. Currently zic defaults to fat format + unless you compile with -DZIC_BLOAT_DEFAULT=\"slim\"; this + out-of-the-box default is intended to change in future releases + as the buggy software often mishandles timestamps anyway. + + zic no longer treats a set of rules ending in 2037 specially. + Previously, zic assumed that such a ruleset meant that future + timestamps could not be predicted, and therefore omitted a + POSIX-like TZ string in the TZif output. The old behavior is no + longer needed for current tzdata, and caused problems with newlib + when used with older tzdata (reported by David Gauchard). + + zic no longer generates some artifact transitions. For example, + Europe/London no longer has a no-op transition in January 1996. + + Changes to build procedure + + tzdata.zi now assumes zic 2017c or later. This shrinks tzdata.zi + by a percent or so. + + Changes to documentation and commentary + + The Makefile now documents the POSIXRULES macro as being obsolete, + and similarly, zic's -p POSIXRULES option is now documented as + being obsolete. Although the POSIXRULES feature still exists and + works as before, in practice it is rarely used for its intended + purpose, and it does not work either in the default reference + implementation (for timestamps after 2037) or in common + implementations such as GNU/Linux (for contemporary timestamps). + Since POSIXRULES was designed primarily as a temporary transition + facility for System V platforms that died off decades ago, it is + being decommissioned rather than institutionalized. + + New info on Bonin Islands and Marcus (thanks to Wakaba and Phake Nick). + + +Release 2019a - 2019-03-25 22:01:33 -0700 Briefly: Palestine "springs forward" on 2019-03-30 instead of 2019-03-23. @@ -481,7 +575,7 @@ Release 2018d - 2018-03-22 07:05:46 -0700 The code is a bit more portable to MS-Windows. Installers can compile with -DRESERVE_STD_EXT_IDS on MS-Windows platforms that reserve identifiers like 'localtime'. (Thanks to Manuela - Friedrich). + Friedrich.) Changes to documentation and commentary @@ -2276,7 +2370,7 @@ Release 2014f - 2014-08-05 17:42:36 -0700 warlord Jin Shuren in the data. Commentary about the coverage of each Russian zone has been standardized. - (Thanks to Tim Parenti). + (Thanks to Tim Parenti.) There is new commentary about contemporary timekeeping in Ethiopia. @@ -2724,7 +2818,7 @@ Release 2013e - 2013-09-19 23:50:04 -0700 Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. This affects Europe/Zurich timestamps from 1853 to 1894. (Thanks - to Alois Treindl). + to Alois Treindl.) Change the date of the circa-1850 Zurich transition from 1849-09-12 to 1853-07-16, overriding Shanks with data from Messerli about @@ -3034,7 +3128,7 @@ Release 2013a - 2013-02-27 09:20:35 -0800 (Thanks to Arthur David Olson.) Improve the commentary about which districts observe what times - in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson). + in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson.) Add web page links to tz.js. diff --git a/africa b/africa index a58c11c181cc..feb6017d959b 100644 --- a/africa +++ b/africa @@ -89,7 +89,7 @@ Rule Algeria 1980 only - Apr 25 0:00 1:00 S Rule Algeria 1980 only - Oct 31 2:00 0 - # Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's # more precise 0:09:21. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01 0:09:21 - PMT 1911 Mar 11 # Paris Mean Time 0:00 Algeria WE%sT 1940 Feb 25 2:00 @@ -124,7 +124,7 @@ Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01 # For now, ignore that and follow the 1911-05-26 Portuguese decree # (see Europe/Lisbon). # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Atlantic/Cape_Verde -1:34:04 - LMT 1912 Jan 01 2:00u # Praia -2:00 - -02 1942 Sep -2:00 1:00 -01 1945 Oct 15 @@ -135,7 +135,7 @@ Zone Atlantic/Cape_Verde -1:34:04 - LMT 1912 Jan 01 2:00u # Praia # See Africa/Lagos. # Chad -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena 1:00 - WAT 1979 Oct 14 1:00 1:00 WAST 1980 Mar 8 @@ -151,7 +151,7 @@ Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena # See Africa/Lagos. # Côte d'Ivoire / Ivory Coast -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Abidjan -0:16:08 - LMT 1912 0:00 - GMT Link Africa/Abidjan Africa/Bamako # Mali @@ -356,7 +356,7 @@ Rule Egypt 2014 only - Jun 26 24:00 0 - Rule Egypt 2014 only - Jul 31 24:00 1:00 S Rule Egypt 2014 only - Sep lastThu 24:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Cairo 2:05:09 - LMT 1900 Oct 2:00 Egypt EE%sT @@ -414,7 +414,7 @@ Zone Africa/Cairo 2:05:09 - LMT 1900 Oct # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Ghana 1920 1942 - Sep 1 0:00 0:20 - Rule Ghana 1920 1942 - Dec 31 0:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Accra -0:00:52 - LMT 1918 0:00 Ghana GMT/+0020 @@ -428,13 +428,13 @@ Zone Africa/Accra -0:00:52 - LMT 1918 # evidently confusing the date of the Portuguese decree # (see Europe/Lisbon) with the date that it took effect. # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 1:00u -1:00 - -01 1975 0:00 - GMT # Kenya -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul 3:00 - EAT 1930 2:30 - +0230 1940 @@ -469,7 +469,7 @@ Link Africa/Nairobi Indian/Mayotte # Use the abbreviation "MMT" before 1972, as the more-accurate numeric # abbreviation "-004430" would be one byte over the POSIX limit. # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Monrovia -0:43:08 - LMT 1882 -0:43:08 - MMT 1919 Mar # Monrovia Mean Time -0:44:30 - MMT 1972 Jan 7 # approximately MMT @@ -519,7 +519,7 @@ Rule Libya 1997 only - Apr 4 0:00 1:00 S Rule Libya 1997 only - Oct 4 0:00 0 - Rule Libya 2013 only - Mar lastFri 1:00 1:00 S Rule Libya 2013 only - Oct lastFri 2:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Tripoli 0:52:44 - LMT 1920 1:00 Libya CE%sT 1959 2:00 - EET 1982 @@ -629,7 +629,7 @@ Rule Mauritius 1982 only - Oct 10 0:00 1:00 - Rule Mauritius 1983 only - Mar 21 0:00 0 - Rule Mauritius 2008 only - Oct lastSun 2:00 1:00 - Rule Mauritius 2009 only - Mar lastSun 2:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis 4:00 Mauritius +04/+05 # Agalega Is, Rodriguez @@ -860,18 +860,24 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis # the week end after.... The government does not announce yet the decision # about this temporary change. But it s 99% sure that it will be the case, # as in previous years. An unofficial survey was done these days, showing -# that 64% of asked peopke are ok for moving from +1 to +0 during Ramadan. +# that 64% of asked people are ok for moving from +1 to +0 during Ramadan. # https://leconomiste.com/article/1035870-enquete-l-economiste-sunergia-64-des-marocains-plebiscitent-le-gmt-pendant-ramadan + +# From Naoufal Semlali (2019-04-16): +# Morocco will be on GMT starting from Sunday, May 5th 2019 at 3am. +# The switch to GMT+1 will occur on Sunday, June 9th 2019 at 2am.... +# http://fr.le360.ma/societe/voici-la-date-du-retour-a-lheure-legale-au-maroc-188222 # -# From Paul Eggert (2018-11-01): -# For now, guess that Morocco will fall back at 03:00 the last Sunday -# before Ramadan, and spring forward at 02:00 the first Sunday after +# From Paul Eggert (2019-05-20): +# This agrees with our 2018-11-01 guess that the Moroccan government +# would continue the practice of falling back at 03:00 the last Sunday +# before Ramadan, and of springing forward at 02:00 the first Sunday after # Ramadan, as this has been the practice since 2012. To implement this, -# transition dates for 2019 through 2037 were determined by running the -# following program under GNU Emacs 26.1. +# transition dates for 2019 through 2087 were determined by running the +# following program under GNU Emacs 26.2. # (let ((islamic-year 1440)) # (require 'cal-islam) -# (while (< islamic-year 1460) +# (while (< islamic-year 1511) # (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year))) # (b (calendar-islamic-to-absolute (list 10 1 islamic-year))) # (sunday 0)) @@ -970,8 +976,114 @@ Rule Morocco 2036 only - Oct 19 3:00 -1:00 - Rule Morocco 2036 only - Nov 23 2:00 0 - Rule Morocco 2037 only - Oct 4 3:00 -1:00 - Rule Morocco 2037 only - Nov 15 2:00 0 - +Rule Morocco 2038 only - Sep 26 3:00 -1:00 - +Rule Morocco 2038 only - Oct 31 2:00 0 - +Rule Morocco 2039 only - Sep 18 3:00 -1:00 - +Rule Morocco 2039 only - Oct 23 2:00 0 - +Rule Morocco 2040 only - Sep 2 3:00 -1:00 - +Rule Morocco 2040 only - Oct 14 2:00 0 - +Rule Morocco 2041 only - Aug 25 3:00 -1:00 - +Rule Morocco 2041 only - Sep 29 2:00 0 - +Rule Morocco 2042 only - Aug 10 3:00 -1:00 - +Rule Morocco 2042 only - Sep 21 2:00 0 - +Rule Morocco 2043 only - Aug 2 3:00 -1:00 - +Rule Morocco 2043 only - Sep 6 2:00 0 - +Rule Morocco 2044 only - Jul 24 3:00 -1:00 - +Rule Morocco 2044 only - Aug 28 2:00 0 - +Rule Morocco 2045 only - Jul 9 3:00 -1:00 - +Rule Morocco 2045 only - Aug 20 2:00 0 - +Rule Morocco 2046 only - Jul 1 3:00 -1:00 - +Rule Morocco 2046 only - Aug 5 2:00 0 - +Rule Morocco 2047 only - Jun 23 3:00 -1:00 - +Rule Morocco 2047 only - Jul 28 2:00 0 - +Rule Morocco 2048 only - Jun 7 3:00 -1:00 - +Rule Morocco 2048 only - Jul 19 2:00 0 - +Rule Morocco 2049 only - May 30 3:00 -1:00 - +Rule Morocco 2049 only - Jul 4 2:00 0 - +Rule Morocco 2050 only - May 15 3:00 -1:00 - +Rule Morocco 2050 only - Jun 26 2:00 0 - +Rule Morocco 2051 only - May 7 3:00 -1:00 - +Rule Morocco 2051 only - Jun 11 2:00 0 - +Rule Morocco 2052 only - Apr 28 3:00 -1:00 - +Rule Morocco 2052 only - Jun 2 2:00 0 - +Rule Morocco 2053 only - Apr 13 3:00 -1:00 - +Rule Morocco 2053 only - May 25 2:00 0 - +Rule Morocco 2054 only - Apr 5 3:00 -1:00 - +Rule Morocco 2054 only - May 10 2:00 0 - +Rule Morocco 2055 only - Mar 28 3:00 -1:00 - +Rule Morocco 2055 only - May 2 2:00 0 - +Rule Morocco 2056 only - Mar 12 3:00 -1:00 - +Rule Morocco 2056 only - Apr 23 2:00 0 - +Rule Morocco 2057 only - Mar 4 3:00 -1:00 - +Rule Morocco 2057 only - Apr 8 2:00 0 - +Rule Morocco 2058 only - Feb 17 3:00 -1:00 - +Rule Morocco 2058 only - Mar 31 2:00 0 - +Rule Morocco 2059 only - Feb 9 3:00 -1:00 - +Rule Morocco 2059 only - Mar 16 2:00 0 - +Rule Morocco 2060 only - Feb 1 3:00 -1:00 - +Rule Morocco 2060 only - Mar 7 2:00 0 - +Rule Morocco 2061 only - Jan 16 3:00 -1:00 - +Rule Morocco 2061 only - Feb 27 2:00 0 - +Rule Morocco 2062 only - Jan 8 3:00 -1:00 - +Rule Morocco 2062 only - Feb 12 2:00 0 - +Rule Morocco 2062 only - Dec 31 3:00 -1:00 - +Rule Morocco 2063 only - Feb 4 2:00 0 - +Rule Morocco 2063 only - Dec 16 3:00 -1:00 - +Rule Morocco 2064 only - Jan 20 2:00 0 - +Rule Morocco 2064 only - Dec 7 3:00 -1:00 - +Rule Morocco 2065 only - Jan 11 2:00 0 - +Rule Morocco 2065 only - Nov 22 3:00 -1:00 - +Rule Morocco 2066 only - Jan 3 2:00 0 - +Rule Morocco 2066 only - Nov 14 3:00 -1:00 - +Rule Morocco 2066 only - Dec 19 2:00 0 - +Rule Morocco 2067 only - Nov 6 3:00 -1:00 - +Rule Morocco 2067 only - Dec 11 2:00 0 - +Rule Morocco 2068 only - Oct 21 3:00 -1:00 - +Rule Morocco 2068 only - Dec 2 2:00 0 - +Rule Morocco 2069 only - Oct 13 3:00 -1:00 - +Rule Morocco 2069 only - Nov 17 2:00 0 - +Rule Morocco 2070 only - Oct 5 3:00 -1:00 - +Rule Morocco 2070 only - Nov 9 2:00 0 - +Rule Morocco 2071 only - Sep 20 3:00 -1:00 - +Rule Morocco 2071 only - Oct 25 2:00 0 - +Rule Morocco 2072 only - Sep 11 3:00 -1:00 - +Rule Morocco 2072 only - Oct 16 2:00 0 - +Rule Morocco 2073 only - Aug 27 3:00 -1:00 - +Rule Morocco 2073 only - Oct 8 2:00 0 - +Rule Morocco 2074 only - Aug 19 3:00 -1:00 - +Rule Morocco 2074 only - Sep 23 2:00 0 - +Rule Morocco 2075 only - Aug 11 3:00 -1:00 - +Rule Morocco 2075 only - Sep 15 2:00 0 - +Rule Morocco 2076 only - Jul 26 3:00 -1:00 - +Rule Morocco 2076 only - Sep 6 2:00 0 - +Rule Morocco 2077 only - Jul 18 3:00 -1:00 - +Rule Morocco 2077 only - Aug 22 2:00 0 - +Rule Morocco 2078 only - Jul 10 3:00 -1:00 - +Rule Morocco 2078 only - Aug 14 2:00 0 - +Rule Morocco 2079 only - Jun 25 3:00 -1:00 - +Rule Morocco 2079 only - Jul 30 2:00 0 - +Rule Morocco 2080 only - Jun 16 3:00 -1:00 - +Rule Morocco 2080 only - Jul 21 2:00 0 - +Rule Morocco 2081 only - Jun 1 3:00 -1:00 - +Rule Morocco 2081 only - Jul 13 2:00 0 - +Rule Morocco 2082 only - May 24 3:00 -1:00 - +Rule Morocco 2082 only - Jun 28 2:00 0 - +Rule Morocco 2083 only - May 16 3:00 -1:00 - +Rule Morocco 2083 only - Jun 20 2:00 0 - +Rule Morocco 2084 only - Apr 30 3:00 -1:00 - +Rule Morocco 2084 only - Jun 11 2:00 0 - +Rule Morocco 2085 only - Apr 22 3:00 -1:00 - +Rule Morocco 2085 only - May 27 2:00 0 - +Rule Morocco 2086 only - Apr 14 3:00 -1:00 - +Rule Morocco 2086 only - May 19 2:00 0 - +Rule Morocco 2087 only - Mar 30 3:00 -1:00 - +Rule Morocco 2087 only - May 4 2:00 0 - +# For dates after the somewhat-arbitrary cutoff of 2087, assume that +# Morocco will no longer observe DST. At some point this table will +# need to be extended, though quite possibly Morocco will change the +# rules first. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Casablanca -0:30:20 - LMT 1913 Oct 26 0:00 Morocco +00/+01 1984 Mar 16 1:00 - +01 1986 @@ -1001,7 +1113,7 @@ Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún # https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf # merely made it official? # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Maputo 2:10:20 - LMT 1903 Mar 2:00 - CAT Link Africa/Maputo Africa/Blantyre # Malawi @@ -1073,7 +1185,7 @@ Rule Namibia 1995 2017 - Apr Sun>=1 2:00 -1:00 WAT #Rule Namibia 1995 2017 - Apr Sun>=1 2:00 0 WAT # End of rearguard section. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8 1:30 - +0130 1903 Mar 2:00 - SAST 1942 Sep 20 2:00 @@ -1094,7 +1206,7 @@ Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8 # See Africa/Lagos. # Nigeria -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Lagos 0:13:36 - LMT 1919 Sep 1:00 - WAT Link Africa/Lagos Africa/Bangui # Central African Republic @@ -1108,7 +1220,7 @@ Link Africa/Lagos Africa/Niamey # Niger Link Africa/Lagos Africa/Porto-Novo # Benin # Réunion -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis 4:00 - +04 # @@ -1168,7 +1280,7 @@ Zone Africa/Sao_Tome 0:26:56 - LMT 1884 # See Africa/Abidjan. # Seychelles -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria 4:00 - +04 # From Paul Eggert (2001-05-30): @@ -1188,7 +1300,7 @@ Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule SA 1942 1943 - Sep Sun>=15 2:00 1:00 - Rule SA 1943 1944 - Mar Sun>=15 2:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Johannesburg 1:52:00 - LMT 1892 Feb 8 1:30 - SAST 1903 Mar 2:00 SA SAST @@ -1223,14 +1335,14 @@ Rule Sudan 1970 only - May 1 0:00 1:00 S Rule Sudan 1970 1985 - Oct 15 0:00 0 - Rule Sudan 1971 only - Apr 30 0:00 1:00 S Rule Sudan 1972 1985 - Apr lastSun 0:00 1:00 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Khartoum 2:10:08 - LMT 1931 2:00 Sudan CA%sT 2000 Jan 15 12:00 3:00 - EAT 2017 Nov 1 2:00 - CAT # South Sudan -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Juba 2:06:28 - LMT 1931 2:00 Sudan CA%sT 2000 Jan 15 12:00 3:00 - EAT @@ -1336,7 +1448,7 @@ Rule Tunisia 2006 2008 - Oct lastSun 2:00s 0 - # Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's # more precise 0:09:21. # Shanks & Pottenger say the 1911 switch was on Mar 9; go with Howse's Mar 11. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Tunis 0:40:44 - LMT 1881 May 12 0:09:21 - PMT 1911 Mar 11 # Paris Mean Time 1:00 Tunisia CE%sT diff --git a/antarctica b/antarctica index 1dd9b004f73a..205998381dce 100644 --- a/antarctica +++ b/antarctica @@ -13,7 +13,7 @@ # for information. # Unless otherwise specified, we have no time zone information. -# FORMAT is '-00' and GMTOFF is 0 for locations while uninhabited. +# FORMAT is '-00' and STDOFF is 0 for locations while uninhabited. # Argentina - year-round bases # Belgrano II, Confin Coast, -770227-0343737, since 1972-02-05 @@ -70,7 +70,7 @@ # Australian Antarctica Division informed us that Casey changed time # zone to UTC+11 in "the morning of 22nd October 2016". -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Antarctica/Casey 0 - -00 1969 8:00 - +08 2009 Oct 18 2:00 11:00 - +11 2010 Mar 5 2:00 @@ -142,7 +142,7 @@ Zone Antarctica/Mawson 0 - -00 1954 Feb 13 # St Paul Island - near Amsterdam, uninhabited # fishing stations operated variously 1819/1931 # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Indian/Kerguelen 0 - -00 1950 # Port-aux-Français 5:00 - +05 # @@ -153,7 +153,7 @@ Zone Indian/Kerguelen 0 - -00 1950 # Port-aux-Français # Another base at Port-Martin, 50km east, began operation in 1947. # It was destroyed by fire on 1952-01-14. # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Antarctica/DumontDUrville 0 - -00 1947 10:00 - +10 1952 Jan 14 0 - -00 1956 Nov @@ -181,7 +181,7 @@ Zone Antarctica/DumontDUrville 0 - -00 1947 # Syowa station, which is the first antarctic station of Japan, # was established on 1957-01-29. Since Syowa station is still the main # station of Japan, it's appropriate for the principal location. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Antarctica/Syowa 0 - -00 1957 Jan 29 3:00 - +03 # See: @@ -231,7 +231,7 @@ Rule Troll 2005 max - Mar lastSun 1:00u 2:00 +02 #Rule Troll 2004 max - Nov 7 1:00u 0:00 +00 # Remove the following line when uncommenting the above '#Rule' lines. Rule Troll 2004 max - Oct lastSun 1:00u 0:00 +00 -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Antarctica/Troll 0 - -00 2005 Feb 12 0:00 Troll %s @@ -305,7 +305,7 @@ Zone Antarctica/Vostok 0 - -00 1957 Dec 16 # From Paul Eggert (2002-10-22) # says Rothera is -03 all year. # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Antarctica/Rothera 0 - -00 1976 Dec 1 -3:00 - -03 diff --git a/asia b/asia index d790da5bf626..348e2b5df5ec 100644 --- a/asia +++ b/asia @@ -84,7 +84,7 @@ Rule RussiaAsia 1985 2010 - Mar lastSun 2:00s 1:00 - Rule RussiaAsia 1996 2010 - Oct lastSun 2:00s 0 - # Afghanistan -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Kabul 4:36:48 - LMT 1890 4:00 - +04 1945 4:30 - +0430 @@ -117,7 +117,7 @@ Zone Asia/Kabul 4:36:48 - LMT 1890 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Armenia 2011 only - Mar lastSun 2:00s 1:00 - Rule Armenia 2011 only - Oct lastSun 2:00s 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2 3:00 - +03 1957 Mar 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s @@ -143,7 +143,7 @@ Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Azer 1997 2015 - Mar lastSun 4:00 1:00 - Rule Azer 1997 2015 - Oct lastSun 5:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Baku 3:19:24 - LMT 1924 May 2 3:00 - +03 1957 Mar 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s @@ -231,7 +231,7 @@ Zone Asia/Baku 3:19:24 - LMT 1924 May 2 Rule Dhaka 2009 only - Jun 19 23:00 1:00 - Rule Dhaka 2009 only - Dec 31 24:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Dhaka 6:01:40 - LMT 1890 5:53:20 - HMT 1941 Oct # Howrah Mean Time? 6:30 - +0630 1942 May 15 @@ -241,7 +241,7 @@ Zone Asia/Dhaka 6:01:40 - LMT 1890 6:00 Dhaka +06/+07 # Bhutan -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu 5:30 - +0530 1987 Oct 6:00 - +06 @@ -252,13 +252,13 @@ Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu # We have no information as to when standard time was introduced; # assume it occurred in 1907, the same year as Mauritius (which # then contained the Chagos Archipelago). -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Indian/Chagos 4:49:40 - LMT 1907 5:00 - +05 1996 6:00 - +06 # Brunei -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan 7:30 - +0730 1933 8:00 - +08 @@ -273,7 +273,7 @@ Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan # of Greenwich." This refers to the period before Burma's transition to +0630, # a transition for which Shanks is the only source. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoon 6:24:47 - RMT 1920 # Rangoon local time 6:30 - +0630 1942 May @@ -561,7 +561,7 @@ Rule PRC 1987 1991 - Apr Sun>=11 2:00 1:00 D # that the sort of users who prefer Asia/Urumqi now typically ignored the # +08 mandate back then. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] # Beijing time, used throughout China; represented by Shanghai. Zone Asia/Shanghai 8:05:43 - LMT 1901 8:00 Shang C%sT 1949 May 28 @@ -652,11 +652,41 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928 # https://i.imgur.com/05KkvtC.png # * 1941-09-30, Hong Kong Daily Press, Winter Time Warning. # https://i.imgur.com/dge4kFJ.png -# Also, the Liberation day of Hong Kong after WWII which British rule -# over the territory resumed was August 30, 1945, which I think should -# be the termination date for the use of JST in the territory.... -# From Paul Eggert (2018-11-17): +# From P Chan (2018-12-31): +# * According to the Hong Kong Daylight-Saving Regulations, 1941, the +# 1941 spring-forward transition was at 03:00. +# http://sunzi.lib.hku.hk/hkgro/view/g1941/304271.pdf +# http://sunzi.lib.hku.hk/hkgro/view/g1941/305516.pdf +# * According to some articles from South China Morning Post, +08 was +# resumed on 1945-11-18 at 02:00. +# https://i.imgur.com/M2IsZ3c.png +# https://i.imgur.com/iOPqrVo.png +# https://i.imgur.com/fffcGDs.png +# * Some newspapers ... said the 1946 spring-forward transition was on +# 04-21 at 00:00. The Kung Sheung Evening News 1946-04-20 (Chinese) +# https://i.imgur.com/ZSzent0.png +# https://mmis.hkpl.gov.hk///c/portal/cover?c=QF757YsWv5%2FH7zGe%2FKF%2BFLYsuqGhRBfe p.4 +# The Kung Sheung Daily News 1946-04-21 (Chinese) +# https://i.imgur.com/7ecmRlcm.png +# https://mmis.hkpl.gov.hk///c/portal/cover?c=QF757YsWv5%2BQBGt1%2BwUj5qG2GqtwR3Wh p.4 +# * According to the Summer Time Ordinance (1946), the fallback +# transitions between 1946 and 1952 were at 03:30 Standard Time (+08) +# http://oelawhk.lib.hku.hk/archive/files/bb74b06a74d5294620a15de560ab33c6.pdf +# * Some other laws and regulations related to DST from 1953 to 1979 +# Summer Time Ordinance 1953 +# https://i.imgur.com/IOlJMav.jpg +# Summer Time (Amendment) Ordinance 1965 +# https://i.imgur.com/8rofeLa.jpg +# Interpretation and General Clauses Ordinance (1966) +# https://i.imgur.com/joy3msj.jpg +# Emergency (Summer Time) Regulation 1973 +# Interpretation and General Clauses (Amendment) Ordinance 1977 +# https://i.imgur.com/RaNqnc4.jpg +# Resolution of the Legislative Council passed on 9 May 1979 +# https://www.legco.gov.hk/yr78-79/english/lc_sitg/hansard/h790509.pdf#page=39 + +# From Paul Eggert (2019-05-31): # Here are the dates given at # https://www.hko.gov.hk/gts/time/Summertime.htm # as of 2014-06-19: @@ -667,7 +697,7 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928 # 1944 Whole year # 1945 Whole year # 1946 20 Apr to 1 Dec -# 1947 13 Apr to 30 Dec +# 1947 13 Apr to 30 Nov # 1948 2 May to 31 Oct # 1949 3 Apr to 30 Oct # 1950 2 Apr to 29 Oct @@ -704,36 +734,28 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928 # The page does not give times of day for transitions, # or dates for the 1942 and 1945 transitions. # The Japanese occupation of Hong Kong began 1941-12-25. -# The Japanese surrender of Hong Kong was signed 1945-09-16; see: -# Heaver S. The days after the Pacific war ended: unsettling times -# in Hong Kong. Post Magazine. 2016-06-13. -# https://www.scmp.com/magazines/post-magazine/article/1852990/days-after-pacific-war-ended-unsettling-times-hong-kong -# For lack of anything better, use start of those days as the -# transition times. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule HK 1946 only - Apr 20 3:30 1:00 S -Rule HK 1946 only - Dec 1 3:30 0 - -Rule HK 1947 only - Apr 13 3:30 1:00 S -Rule HK 1947 only - Dec 30 3:30 0 - -Rule HK 1948 only - May 2 3:30 1:00 S -Rule HK 1948 1951 - Oct lastSun 3:30 0 - -Rule HK 1952 1953 - Nov Sun>=1 3:30 0 - +Rule HK 1946 only - Apr 21 0:00 1:00 S +Rule HK 1946 only - Dec 1 3:30s 0 - +Rule HK 1947 only - Apr 13 3:30s 1:00 S +Rule HK 1947 only - Nov 30 3:30s 0 - +Rule HK 1948 only - May 2 3:30s 1:00 S +Rule HK 1948 1952 - Oct Sun>=28 3:30s 0 - Rule HK 1949 1953 - Apr Sun>=1 3:30 1:00 S +Rule HK 1953 1964 - Oct Sun>=31 3:30 0 - Rule HK 1954 1964 - Mar Sun>=18 3:30 1:00 S -Rule HK 1954 only - Oct 31 3:30 0 - -Rule HK 1955 1964 - Nov Sun>=1 3:30 0 - Rule HK 1965 1976 - Apr Sun>=16 3:30 1:00 S Rule HK 1965 1976 - Oct Sun>=16 3:30 0 - Rule HK 1973 only - Dec 30 3:30 1:00 S -Rule HK 1979 only - May Sun>=8 3:30 1:00 S -Rule HK 1979 only - Oct Sun>=16 3:30 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Rule HK 1979 only - May 13 3:30 1:00 S +Rule HK 1979 only - Oct 21 3:30 0 - +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30 0:36:42 - 8:00 - HKT 1941 Jun 15 3:30 + 8:00 - HKT 1941 Jun 15 3:00 8:00 1:00 HKST 1941 Oct 1 4:00 8:30 - HKT 1941 Dec 25 - 9:00 - JST 1945 Sep 16 + 9:00 - JST 1945 Nov 18 2:00 8:00 HK HK%sT ############################################################################### @@ -857,7 +879,7 @@ Rule Taiwan 1974 1975 - Oct 1 0:00 0 S Rule Taiwan 1979 only - Jul 1 0:00 1:00 D Rule Taiwan 1979 only - Oct 1 0:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] # Taipei or Taibei or T'ai-pei Zone Asia/Taipei 8:06:00 - LMT 1896 Jan 1 8:00 - CST 1937 Oct 1 @@ -995,7 +1017,7 @@ Rule Macau 1975 1976 - Apr Sun>=16 03:30 1:00 D Rule Macau 1979 only - May 13 03:30 1:00 D Rule Macau 1979 only - Oct Sun>=16 03:30 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Macau 7:34:10 - LMT 1904 Oct 30 8:00 - CST 1941 Dec 21 23:00 9:00 Macau +09/+10 1945 Sep 30 24:00 @@ -1034,7 +1056,7 @@ Rule Cyprus 1977 only - Sep 25 0:00 0 - Rule Cyprus 1978 only - Oct 2 0:00 0 - Rule Cyprus 1979 1997 - Sep lastSun 0:00 0 - Rule Cyprus 1981 1998 - Mar lastSun 0:00 1:00 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Nicosia 2:13:28 - LMT 1921 Nov 14 2:00 Cyprus EE%sT 1998 Sep 2:00 EUAsia EE%sT @@ -1083,7 +1105,7 @@ Link Asia/Nicosia Europe/Nicosia # Byalokoz 1919 says Georgia was 2:59:11. # Go with Byalokoz. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Tbilisi 2:59:11 - LMT 1880 2:59:11 - TBMT 1924 May 2 # Tbilisi Mean Time 3:00 - +03 1957 Mar @@ -1120,7 +1142,7 @@ Zone Asia/Tbilisi 2:59:11 - LMT 1880 # which will be permanent, with no seasonal adjustment, will happen at # midnight on Saturday, September 16. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Dili 8:22:20 - LMT 1912 Jan 1 8:00 - +08 1942 Feb 21 23:00 9:00 - +09 1976 May 3 @@ -1186,7 +1208,7 @@ Zone Asia/Dili 8:22:20 - LMT 1912 Jan 1 # time for 1870-1941. Shanks is our only (and dubious) source for the # 1941-1945 data. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Kolkata 5:53:28 - LMT 1854 Jun 28 # Kolkata 5:53:20 - HMT 1870 # Howrah Mean Time? 5:21:10 - MMT 1906 Jan 1 # Madras local time @@ -1238,7 +1260,7 @@ Zone Asia/Kolkata 5:53:28 - LMT 1854 Jun 28 # Kolkata # WITA - +08 - Waktu Indonesia Tengah (Indonesia central time) # WIT - +09 - Waktu Indonesia Timur (Indonesia eastern time) # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] # Java, Sumatra Zone Asia/Jakarta 7:07:12 - LMT 1867 Aug 10 # Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13, @@ -1314,9 +1336,9 @@ Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov # I used the following code in GNU Emacs 26.1 to generate the "Rule Iran" # lines from 2008 through 2087. Emacs 26.1 uses Ed Reingold's # cal-persia implementation of Birashk's approximation, which in the -# 2008-2087 range disagrees with the the astronomical Persian calendar -# for Persian years 1404 (Gregorian 2025) and 1437 (Gregorian 2058), -# so the following code special-case those years. See Table 15.1, page 264, of: +# 2008-2087 range disagrees with the astronomical Persian calendar +# for Persian years 1404 (Gregorian 2025) and 1437 (Gregorian 2058), so +# the following code special-cases those years. See Table 15.1, page 264, of: # Edward M. Reingold and Nachum Dershowitz, Calendrical Calculations: # The Ultimate Edition, Cambridge University Press (2018). # https://www.cambridge.org/fr/academic/subjects/computer-science/computing-general-interest/calendrical-calculations-ultimate-edition-4th-edition @@ -1510,7 +1532,7 @@ Rule Iran 2087 only - Sep 21 24:00 0 - Rule Iran 2088 max - Mar 20 24:00 1:00 - Rule Iran 2088 max - Sep 20 24:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Tehran 3:25:44 - LMT 1916 3:25:44 - TMT 1946 # Tehran Mean Time 3:30 - +0330 1977 Nov @@ -1555,7 +1577,7 @@ Rule Iraq 1986 1990 - Mar lastSun 1:00s 1:00 - # Rule Iraq 1991 2007 - Apr 1 3:00s 1:00 - Rule Iraq 1991 2007 - Oct 1 3:00s 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Baghdad 2:57:40 - LMT 1890 2:57:36 - BMT 1918 # Baghdad Mean Time? 3:00 - +03 1982 May @@ -1622,7 +1644,7 @@ Rule Zion 1975 only - Apr 20 0:00 1:00 D Rule Zion 1975 only - Aug 31 0:00 0 S # From Alois Treindl (2019-03-06): -# http://www.moin.gov.il/Documents/שעון קיץ/clock-50-years-7-2014.pdf +# http://www.moin.gov.il/Documents/שעון%20קיץ/clock-50-years-7-2014.pdf # From Isaac Starkman (2019-03-06): # Summer time was in that period in 1980 and 1984, see # https://www.ynet.co.il/articles/0,7340,L-3951073,00.html @@ -1760,32 +1782,15 @@ Rule Zion 2004 only - Sep 22 1:00 0 S # # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2005+beyond.ps -# From Paul Eggert (2012-10-26): -# I used Ephraim Silverberg's dst-israel.el program -# (2005-02-20) -# along with Ed Reingold's cal-hebrew in GNU Emacs 21.4, -# to generate the transitions from 2005 through 2012. -# (I replaced "lastFri" with "Fri>=26" by hand.) -# The spring transitions all correspond to the following Rule: -# -# Rule Zion 2005 2012 - Mar Fri>=26 2:00 1:00 D -# -# but older zic implementations (e.g., Solaris 8) do not support -# "Fri>=26" to mean April 1 in years like 2005, so for now we list the -# springtime transitions explicitly. - # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule Zion 2005 only - Apr 1 2:00 1:00 D +Rule Zion 2005 2012 - Apr Fri<=1 2:00 1:00 D Rule Zion 2005 only - Oct 9 2:00 0 S -Rule Zion 2006 2010 - Mar Fri>=26 2:00 1:00 D Rule Zion 2006 only - Oct 1 2:00 0 S Rule Zion 2007 only - Sep 16 2:00 0 S Rule Zion 2008 only - Oct 5 2:00 0 S Rule Zion 2009 only - Sep 27 2:00 0 S Rule Zion 2010 only - Sep 12 2:00 0 S -Rule Zion 2011 only - Apr 1 2:00 1:00 D Rule Zion 2011 only - Oct 2 2:00 0 S -Rule Zion 2012 only - Mar Fri>=26 2:00 1:00 D Rule Zion 2012 only - Sep 23 2:00 0 S # From Ephraim Silverberg (2013-06-27): @@ -1801,7 +1806,7 @@ Rule Zion 2012 only - Sep 23 2:00 0 S Rule Zion 2013 max - Mar Fri>=23 2:00 1:00 D Rule Zion 2013 max - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Jerusalem 2:20:54 - LMT 1880 2:20:40 - JMT 1918 # Jerusalem Mean Time? 2:00 Zion I%sT @@ -1893,7 +1898,7 @@ Rule Japan 1950 1951 - May Sat>=1 24:00 1:00 D # Central Time (UT+9). The adoption began on Oct 1, 1937. # https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件 -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u 9:00 Japan J%sT # Since 1938, all Japanese possessions have been like Asia/Tokyo, @@ -1996,7 +2001,7 @@ Rule Jordan 2006 2011 - Oct lastFri 0:00s 0 - Rule Jordan 2013 only - Dec 20 0:00 0 - Rule Jordan 2014 max - Mar lastThu 24:00 1:00 S Rule Jordan 2014 max - Oct lastFri 0:00s 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Amman 2:23:44 - LMT 1931 2:00 Jordan EE%sT @@ -2037,8 +2042,8 @@ Zone Asia/Amman 2:23:44 - LMT 1931 # text. # # According to Izvestia newspaper No. 68 (23334) from 1991-03-20 -# (page 6; available at http://libinfo.org/newsr/newsr2574.djvu via -# http://libinfo.org/index.php?id=58564) on 1991-03-31 at 2:00 during +# -- page 6; available at http://libinfo.org/newsr/newsr2574.djvu via +# http://libinfo.org/index.php?id=58564 -- on 1991-03-31 at 2:00 during # transition to "summer" time: # Republic of Georgia, Latvian SSR, Lithuanian SSR, SSR Moldova, # Estonian SSR; Komi ASSR; Kaliningrad oblast; Nenets autonomous okrug @@ -2054,7 +2059,7 @@ Zone Asia/Amman 2:23:44 - LMT 1931 # Apparently there were last minute changes. Apparently Kazakh act No. 170 # was one of such changes. # -# https://ru.wikipedia.org/wiki/Декретное время +# https://ru.wikipedia.org/wiki/Декретное_время # claims that Sovetskaya Rossiya newspaper on 1991-03-29 published that # Nenets autonomous okrug, Komi and Kazakhstan (excluding Uralsk oblast) # were to not move clocks and Uralsk oblast was to move clocks @@ -2193,7 +2198,7 @@ Zone Asia/Amman 2:23:44 - LMT 1931 # UTC+6 to UTC+5 effective December 21st, 2018. The legal document is # located here: http://adilet.zan.kz/rus/docs/P1800000817 (russian language). -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] # # Almaty (formerly Alma-Ata), representing most locations in Kazakhstan # This includes KZ-AKM, KZ-ALA, KZ-ALM, KZ-AST, KZ-BAY, KZ-VOS, KZ-ZHA, @@ -2295,7 +2300,7 @@ Rule Kyrgyz 1992 1996 - Apr Sun>=7 0:00s 1:00 - Rule Kyrgyz 1992 1996 - Sep lastSun 0:00 0 - Rule Kyrgyz 1997 2005 - Mar lastSun 2:30 1:00 - Rule Kyrgyz 1997 2004 - Oct lastSun 2:30 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Bishkek 4:58:24 - LMT 1924 May 2 5:00 - +05 1930 Jun 21 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s @@ -2410,7 +2415,7 @@ Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S # The BBC reported that the transition was from 23:30 to 24:00 today. # https://www.bbc.com/news/world-asia-44010705 -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1 8:30 - KST 1912 Jan 1 9:00 - JST 1945 Sep 8 @@ -2459,7 +2464,7 @@ Rule Lebanon 1992 only - Oct 4 0:00 0 - Rule Lebanon 1993 max - Mar lastSun 0:00 1:00 S Rule Lebanon 1993 1998 - Sep lastSun 0:00 0 - Rule Lebanon 1999 max - Oct lastSun 0:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Beirut 2:22:00 - LMT 1880 2:00 Lebanon EE%sT @@ -2471,7 +2476,7 @@ Rule NBorneo 1935 1941 - Dec 14 0:00 0 - # peninsular Malaysia # taken from Mok Ly Yng (2003-10-30) # http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. 7:00 - +07 1933 Jan 1 @@ -2485,7 +2490,7 @@ Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1 # From Paul Eggert (2014-08-12): # The data entries here are mostly from Shanks & Pottenger, but the 1942, 1945 # and 1982 transition dates are from Mok Ly Yng. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Kuching 7:21:20 - LMT 1926 Mar 7:30 - +0730 1933 8:00 NBorneo +08/+0820 1942 Feb 16 @@ -2493,7 +2498,7 @@ Zone Asia/Kuching 7:21:20 - LMT 1926 Mar 8:00 - +08 # Maldives -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Indian/Maldives 4:54:00 - LMT 1880 # Malé 4:54:00 - MMT 1960 # Malé Mean Time 5:00 - +05 @@ -2636,7 +2641,7 @@ Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 - Rule Mongol 2015 2016 - Mar lastSat 2:00 1:00 - Rule Mongol 2015 2016 - Sep lastSat 0:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] # Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta Zone Asia/Hovd 6:06:36 - LMT 1905 Aug 6:00 - +06 1978 @@ -2654,7 +2659,7 @@ Zone Asia/Choibalsan 7:38:00 - LMT 1905 Aug 8:00 Mongol +08/+09 # Nepal -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Kathmandu 5:41:16 - LMT 1920 5:30 - +0530 1986 5:45 - +0545 @@ -2804,7 +2809,7 @@ Rule Pakistan 2008 only - Jun 1 0:00 1:00 S Rule Pakistan 2008 2009 - Nov 1 0:00 0 - Rule Pakistan 2009 only - Apr 15 0:00 1:00 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Karachi 4:28:12 - LMT 1907 5:30 - +0530 1942 Sep 5:30 1:00 +0630 1945 Oct 15 @@ -3091,13 +3096,21 @@ Zone Asia/Karachi 4:28:12 - LMT 1907 # http://www.palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e7a42ab7-ee23-435a-b9c8-a4f7e81f3817 # From Even Scharning (2019-03-23): -# DST in Palestine will start on 30 March this year, not 23 March as the time -# zone database predicted. -# https://ramallah.news/post/123610 +# http://pnn.ps/news/401130 +# http://palweather.ps/ar/node/50136.html # -# From Tim Parenti (2019-03-23): -# Combining this with the rules observed since 2016, adjust our spring -# transition guess to Mar Sat>=24. +# From Sharif Mustafa (2019-03-26): +# The Palestinian cabinet announced today that the switch to DST will +# be on Fri Mar 29th 2019 by advancing the clock by 60 minutes. +# The decree signing date is Mar 12th but it was not published till today. +# The decree does not specify the exact time of switch. +# http://palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e54e9ea1-50ee-4137-84df-0d6c78da259b +# +# From Even Scharning (2019-04-10): +# Our source in Palestine said it happened Friday 29 at 00:00 local time.... +# +# From Paul Eggert (2019-04-10): +# For now, guess spring-ahead transitions are March's last Friday at 00:00. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule EgyptAsia 1957 only - May 10 0:00 1:00 S @@ -3128,10 +3141,11 @@ Rule Palestine 2012 only - Sep 21 1:00 0 - Rule Palestine 2013 only - Sep Fri>=21 0:00 0 - Rule Palestine 2014 2015 - Oct Fri>=21 0:00 0 - Rule Palestine 2015 only - Mar lastFri 24:00 1:00 S -Rule Palestine 2016 max - Mar Sat>=24 1:00 1:00 S +Rule Palestine 2016 2018 - Mar Sat>=24 1:00 1:00 S Rule Palestine 2016 max - Oct lastSat 1:00 0 - +Rule Palestine 2019 max - Mar lastFri 0:00 1:00 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Gaza 2:17:52 - LMT 1900 Oct 2:00 Zion EET/EEST 1948 May 15 2:00 EgyptAsia EE%sT 1967 Jun 5 @@ -3205,7 +3219,7 @@ Rule Phil 1954 only - Apr 12 0:00 1:00 D Rule Phil 1954 only - Jul 1 0:00 0 S Rule Phil 1978 only - Mar 22 0:00 1:00 D Rule Phil 1978 only - Sep 21 0:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31 8:04:00 - LMT 1899 May 11 8:00 Phil P%sT 1942 May @@ -3213,7 +3227,7 @@ Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31 8:00 Phil P%sT # Qatar -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha 4:00 - +04 1972 Jun 3:00 - +03 @@ -3261,7 +3275,7 @@ Link Asia/Qatar Asia/Bahrain # the country. Presumably this is documenting airline time. Ignore this, # as it's before our 1970 cutoff. # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14 3:00 - +03 Link Asia/Riyadh Asia/Aden # Yemen @@ -3270,7 +3284,7 @@ Link Asia/Riyadh Asia/Kuwait # Singapore # taken from Mok Ly Yng (2003-10-30) # http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. 7:00 - +07 1933 Jan 1 @@ -3334,7 +3348,7 @@ Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1 # even worse. For now, let's use a numeric abbreviation; we can # switch to "SLST" if it catches on. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Colombo 5:19:24 - LMT 1880 5:19:32 - MMT 1906 # Moratuwa Mean Time 5:30 - +0530 1942 Jan 5 @@ -3504,13 +3518,13 @@ Rule Syria 2010 2011 - Apr Fri>=1 0:00 1:00 S Rule Syria 2012 max - Mar lastFri 0:00 1:00 S Rule Syria 2009 max - Oct lastFri 0:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq 2:00 Syria EE%sT # Tajikistan # From Shanks & Pottenger. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2 5:00 - +05 1930 Jun 21 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s @@ -3518,7 +3532,7 @@ Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2 5:00 - +05 # Thailand -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Bangkok 6:42:04 - LMT 1880 6:42:04 - BMT 1920 Apr # Bangkok Mean Time 7:00 - +07 @@ -3527,7 +3541,7 @@ Link Asia/Bangkok Asia/Vientiane # Laos # Turkmenistan # From Shanks & Pottenger. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad 4:00 - +04 1930 Jun 21 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00 @@ -3535,14 +3549,14 @@ Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad 5:00 - +05 # United Arab Emirates -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Dubai 3:41:12 - LMT 1920 4:00 - +04 Link Asia/Dubai Asia/Muscat # Oman # Uzbekistan # Byalokoz 1919 says Uzbekistan was 4:27:53. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Samarkand 4:27:53 - LMT 1924 May 2 4:00 - +04 1930 Jun 21 5:00 - +05 1981 Apr 1 @@ -3608,7 +3622,7 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 # Lê Thành Lân: "Lịch hai thế kỷ (1802-2010) và các lịch vĩnh cửu", # NXB Thuận Hoá, Huế, 1995. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jul 1 7:06:30 - PLMT 1911 May 1 # Phù Liễn MT 7:00 - +07 1942 Dec 31 23:00 diff --git a/australasia b/australasia index dfe73d3f9dc5..0544e587509a 100644 --- a/australasia +++ b/australasia @@ -25,7 +25,7 @@ Rule Aus 1943 only - Oct 3 2:00 1:00 D # says W Australia didn't use DST in 1943/1944. Ignore Whitman's claim that # 1944/1945 was just like 1943/1944. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] # Northern Territory Zone Australia/Darwin 8:43:20 - LMT 1895 Feb 9:00 - ACST 1899 May @@ -102,7 +102,7 @@ Rule AS 2006 only - Apr 2 2:00s 0 S Rule AS 2007 only - Mar lastSun 2:00s 0 S Rule AS 2008 max - Apr Sun>=1 2:00s 0 S Rule AS 2008 max - Oct Sun>=1 2:00s 1:00 D -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Australia/Adelaide 9:14:20 - LMT 1895 Feb 9:00 - ACST 1899 May 9:30 Aus AC%sT 1971 @@ -134,7 +134,7 @@ Rule AT 2001 max - Oct Sun>=1 2:00s 1:00 D Rule AT 2006 only - Apr Sun>=1 2:00s 0 S Rule AT 2007 only - Mar lastSun 2:00s 0 S Rule AT 2008 max - Apr Sun>=1 2:00s 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Australia/Hobart 9:49:16 - LMT 1895 Sep 10:00 - AEST 1916 Oct 1 2:00 10:00 1:00 AEDT 1917 Feb @@ -162,7 +162,7 @@ Rule AV 2006 only - Apr Sun>=1 2:00s 0 S Rule AV 2007 only - Mar lastSun 2:00s 0 S Rule AV 2008 max - Apr Sun>=1 2:00s 0 S Rule AV 2008 max - Oct Sun>=1 2:00s 1:00 D -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Australia/Melbourne 9:39:52 - LMT 1895 Feb 10:00 Aus AE%sT 1971 10:00 AV AE%sT @@ -185,7 +185,7 @@ Rule AN 2006 only - Apr Sun>=1 2:00s 0 S Rule AN 2007 only - Mar lastSun 2:00s 0 S Rule AN 2008 max - Apr Sun>=1 2:00s 0 S Rule AN 2008 max - Oct Sun>=1 2:00s 1:00 D -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Australia/Sydney 10:04:52 - LMT 1895 Feb 10:00 Aus AE%sT 1971 10:00 AN AE%sT @@ -256,14 +256,14 @@ Zone Antarctica/Macquarie 0 - -00 1899 Nov 11:00 - +11 # Christmas -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Indian/Christmas 7:02:52 - LMT 1895 Feb 7:00 - +07 # Cocos (Keeling) Is # These islands were ruled by the Ross family from about 1830 to 1978. # We don't know when standard time was introduced; for now, we guess 1900. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Indian/Cocos 6:27:40 - LMT 1900 6:30 - +0630 @@ -386,12 +386,12 @@ Rule Fiji 2012 2013 - Jan Sun>=18 3:00 0 - Rule Fiji 2014 only - Jan Sun>=18 2:00 0 - Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 - Rule Fiji 2015 max - Jan Sun>=13 3:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Fiji 11:55:44 - LMT 1915 Oct 26 # Suva 12:00 Fiji +12/+13 # French Polynesia -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Gambier -8:59:48 - LMT 1912 Oct # Rikitea -9:00 - -09 Zone Pacific/Marquesas -9:18:00 - LMT 1912 Oct @@ -434,7 +434,7 @@ Rule Guam 1977 only - Apr 24 2:00 1:00 D # http://documents.guam.gov/wp-content/uploads/E.O.-77-18-Guam-Standard-Time.pdf Rule Guam 1977 only - Aug 28 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31 9:39:00 - LMT 1901 # Agana 10:00 - GST 1941 Dec 10 # Guam @@ -444,7 +444,7 @@ Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31 Link Pacific/Guam Pacific/Saipan # N Mariana Is # Kiribati -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki 12:00 - +12 Zone Pacific/Enderbury -11:24:20 - LMT 1901 @@ -460,7 +460,7 @@ Zone Pacific/Kiritimati -10:29:20 - LMT 1901 # See Pacific/Guam. # Marshall Is -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Majuro 11:24:48 - LMT 1901 11:00 - +11 1914 Oct 9:00 - +09 1919 Feb 1 @@ -478,7 +478,7 @@ Zone Pacific/Kwajalein 11:09:20 - LMT 1901 12:00 - +12 # Micronesia -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Chuuk -13:52:52 - LMT 1844 Dec 31 10:07:08 - LMT 1901 10:00 - +10 1914 Oct @@ -506,7 +506,7 @@ Zone Pacific/Kosrae -13:08:04 - LMT 1844 Dec 31 11:00 - +11 # Nauru -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Nauru 11:07:40 - LMT 1921 Jan 15 # Uaobe 11:30 - +1130 1942 Aug 29 9:00 - +09 1945 Sep 8 @@ -520,7 +520,7 @@ Rule NC 1978 1979 - Feb 27 0:00 0 - Rule NC 1996 only - Dec 1 2:00s 1:00 - # Shanks & Pottenger say the following was at 2:00; go with IATA. Rule NC 1997 only - Mar 2 2:00s 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Noumea 11:05:48 - LMT 1912 Jan 13 # Nouméa 11:00 NC +11/+12 @@ -559,7 +559,7 @@ Rule NZ 2007 max - Sep lastSun 2:00s 1:00 D Rule Chatham 2007 max - Sep lastSun 2:45s 1:00 - Rule NZ 2008 max - Apr Sun>=1 2:00s 0 S Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2 11:30 NZ NZ%sT 1946 Jan 1 12:00 NZ NZ%sT @@ -585,7 +585,7 @@ Link Pacific/Auckland Antarctica/McMurdo Rule Cook 1978 only - Nov 12 0:00 0:30 - Rule Cook 1979 1991 - Mar Sun>=1 0:00 0 - Rule Cook 1979 1990 - Oct lastSun 0:00 0:30 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua -10:30 - -1030 1978 Nov 12 -10:00 Cook -10/-0930 @@ -594,14 +594,14 @@ Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua # Niue -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Niue -11:19:40 - LMT 1901 # Alofi -11:20 - -1120 1951 -11:30 - -1130 1978 Oct 1 -11:00 - -11 # Norfolk -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston 11:12 - +1112 1951 11:30 - +1130 1974 Oct 27 02:00 @@ -610,13 +610,13 @@ Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston 11:00 - +11 # Palau (Belau) -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Palau -15:02:04 - LMT 1844 Dec 31 # Koror 8:57:56 - LMT 1901 9:00 - +09 # Papua New Guinea -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Port_Moresby 9:48:40 - LMT 1880 9:48:32 - PMMT 1895 # Port Moresby Mean Time 10:00 - +10 @@ -646,7 +646,7 @@ Zone Pacific/Bougainville 10:22:16 - LMT 1880 11:00 - +11 # Pitcairn -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Pitcairn -8:40:20 - LMT 1901 # Adamstown -8:30 - -0830 1998 Apr 27 0:00 -8:00 - -08 @@ -731,7 +731,7 @@ Rule WS 2011 only - Apr Sat>=1 4:00 0 - Rule WS 2011 only - Sep lastSat 3:00 1 - Rule WS 2012 max - Apr Sun>=1 4:00 0 - Rule WS 2012 max - Sep lastSun 3:00 1 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Apia 12:33:04 - LMT 1892 Jul 5 -11:26:56 - LMT 1911 -11:30 - -1130 1950 @@ -740,7 +740,7 @@ Zone Pacific/Apia 12:33:04 - LMT 1892 Jul 5 # Solomon Is # excludes Bougainville, for which see Papua New Guinea -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara 11:00 - +11 @@ -763,7 +763,7 @@ Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara # was "11 hours slow on G.M.T." Go with Thorsen and assume Shanks & Pottenger # are off by an hour starting in 1901. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Fakaofo -11:24:56 - LMT 1901 -11:00 - -11 2011 Dec 30 13:00 - +13 @@ -776,14 +776,14 @@ Rule Tonga 2000 2001 - Nov Sun>=1 2:00 1:00 - Rule Tonga 2001 2002 - Jan lastSun 2:00 0 - Rule Tonga 2016 only - Nov Sun>=1 2:00 1:00 - Rule Tonga 2017 only - Jan Sun>=15 3:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Tongatapu 12:19:20 - LMT 1901 12:20 - +1220 1941 13:00 - +13 1999 13:00 Tonga +13/+14 # Tuvalu -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Funafuti 11:56:52 - LMT 1901 12:00 - +12 @@ -844,7 +844,7 @@ Zone Pacific/Funafuti 11:56:52 - LMT 1901 # uninhabited since World War II; was probably like Pacific/Kiritimati # Wake -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Wake 11:06:28 - LMT 1901 12:00 - +12 @@ -857,12 +857,12 @@ Rule Vanuatu 1984 only - Oct 23 0:00 1:00 - Rule Vanuatu 1985 1991 - Sep Sun>=23 0:00 1:00 - Rule Vanuatu 1992 1993 - Jan Sun>=23 0:00 0 - Rule Vanuatu 1992 only - Oct Sun>=23 0:00 1:00 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila 11:00 Vanuatu +11/+12 # Wallis and Futuna -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Wallis 12:15:20 - LMT 1901 12:00 - +12 @@ -1248,6 +1248,22 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # in WA or its introduction in SA had anything to do with the genesis # of this time zone. My hunch is that it's been around since well # before 1975. I remember seeing it noted on road maps decades ago. +# +# From Gilmore Davidson (2019-04-08): +# https://www.abc.net.au/news/2019-04-08/this-remote-stretch-of-desert-has-its-own-custom-time-zone/10981000 +# ... include[s] a rough description of the geographical boundaries... +# "The time zone exists for about 340 kilometres and takes in the tiny +# roadhouse communities of Cocklebiddy, Madura, Eucla and Border Village." +# ... and an indication that the zone has definitely been in existence +# since before the 1970 cut-off of the database ... +# From Paul Eggert (2019-05-17): +# That ABC Esperance story by Christien de Garis also says: +# Although the Central Western Time Zone is not officially recognised (your +# phones won't automatically change), there is a sign instructing you which +# way to wind your clocks 45 minutes and scrawled underneath one of them in +# Texta is the word: 'Why'? +# "Good question," Mr Pike said. +# "I don't even know that, and it's been going for over 50 years." # From Paul Eggert (2006-12-15): # For lack of better info, assume the tradition dates back to the @@ -1566,6 +1582,42 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 ############################################################################### +# Bonin (Ogasawara) Islands and Marcus Island (Minami-Tori-shima) + +# From Wakaba (2019-01-28) via Phake Nick: +# National Diet Library of Japan has several reports by Japanese Government +# officers that describe the time used in islands when they visited there. +# According to them (and other sources such as newspapers), standard time UTC +# + 10 (JST + 1) and DST UTC + 11 (JST + 2) was used until its return to Japan +# at 1968-06-26 00:00 JST. The exact periods of DST are still unknown. +# I guessed Guam, Mariana, and Bonin and Marcus districts might have +# synchronized their DST periods, but reports imply they had their own +# decisions, i.e. there were three or more different time zones.... +# +# https://wiki.suikawiki.org/n/小笠原諸島の標準時 + +# From Phake Nick (2019-02-12): +# Because their last time change to return to Japanese time when they returned +# to Japanese rule was right before 1970, ... per the current tz database +# rule, the information doesn't warrant creation of a new timezone for Bonin +# Islands itself and is thus as an anecdotal note for interest purpose only. +# ... [The abovementioned link] described some special timekeeping phenomenon +# regarding Marcus island, another remote island currently owned by Japanese +# in the same administrative unit as Bonin Islands. Many reports claim that +# the American coastal guard on the American quarter of the island use its own +# coastal guard time, and most sources describe the time as UTC+11, being two +# hours faster than JST used by some Japanese personnel on the island. Some +# sites describe it as same as Wake Island/Guam time although it would be +# incorrect to be same as Guam. And then in a few Japanese governmental +# report from 1980s (from National Institute of Information and Communications +# Technology) regarding the construction of VLBI facility on the Marcus +# Island, it claimed that there are three time standards being used on the +# island at the time which include not just JST (UTC+9) or [US]CG time +# (UTC+11) but also a JMSDF time (UTC+10) (Japan Maritime Self-Defense +# Force). Unfortunately there are no other sources that mentioned such time +# and there are also no information on things like how the time was used. + + # Fiji # Howse writes (p 153) that in 1879 the British governor of Fiji diff --git a/backzone b/backzone index 380c49200cd7..2a54e6cee352 100644 --- a/backzone +++ b/backzone @@ -38,7 +38,7 @@ # commentary and rules associated with the entry. # # As explained in the zic man page, the zone columns are: -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] # Ethiopia # From Paul Eggert (2014-07-31): diff --git a/checktab.awk b/checktab.awk index 393ab19f0bd8..ec145b5adf95 100644 --- a/checktab.awk +++ b/checktab.awk @@ -63,12 +63,19 @@ BEGIN { coordinates = $2 tz = $3 comments = $4 - if (cc < cc0) { + + # Don't complain about a special case for Crimea in zone.tab. + # FIXME: zone.tab should be removed, since it is obsolete. + # Or at least put just "XX" in its country-code column. + if (cc < cc0 \ + && !(zone_table == "zone.tab" \ + && tz0 == "Europe/Simferopol")) { printf "%s:%d: country code '%s' is out of order\n", \ zone_table, zone_NR, cc >>"/dev/stderr" status = 1 } cc0 = cc + tz0 = tz tztab[tz] = 1 tz2comments[tz] = comments tz2NR[tz] = zone_NR diff --git a/europe b/europe index b735a48d7414..5dc03976dbf5 100644 --- a/europe +++ b/europe @@ -122,7 +122,7 @@ # position is 51° 28' 30" N, 0° 18' 45" W. The longitude should # be within about ±2". The Ordnance Survey grid reference is TQ172761. # -# [This yields GMTOFF = -0:01:15 for London LMT in the 18th century.] +# [This yields STDOFF = -0:01:15 for London LMT in the 18th century.] # From Paul Eggert (1993-11-18): # @@ -500,7 +500,7 @@ Rule GB-Eire 1990 1995 - Oct Sun>=22 1:00u 0 GMT # # Use Europe/London for Jersey, Guernsey, and the Isle of Man. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/London -0:01:15 - LMT 1847 Dec 1 0:00s 0:00 GB-Eire %s 1968 Oct 27 1:00 - BST 1971 Oct 31 2:00u @@ -538,7 +538,7 @@ Rule Eire 1981 1989 - Oct Sun>=23 1:00u -1:00 - Rule Eire 1990 1995 - Oct Sun>=22 1:00u -1:00 - Rule Eire 1996 max - Oct lastSun 1:00u -1:00 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2 -0:25:21 - DMT 1916 May 21 2:00s -0:25:21 1:00 IST 1916 Oct 1 2:00s @@ -737,7 +737,7 @@ Rule Russia 1996 2010 - Oct lastSun 2:00s 0 - # These are for backward compatibility with older versions. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone WET 0:00 EU WE%sT Zone CET 1:00 C-Eur CE%sT Zone MET 1:00 C-Eur ME%sT @@ -797,14 +797,14 @@ Rule Albania 1982 only - Oct 3 0:00 0 - Rule Albania 1983 only - Apr 18 0:00 1:00 S Rule Albania 1983 only - Oct 1 0:00 0 - Rule Albania 1984 only - Apr 1 0:00 1:00 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Tirane 1:19:20 - LMT 1914 1:00 - CET 1940 Jun 16 1:00 Albania CE%sT 1984 Jul 1:00 EU CE%sT # Andorra -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Andorra 0:06:04 - LMT 1901 0:00 - WET 1946 Sep 30 1:00 - CET 1985 Mar 31 2:00 @@ -830,7 +830,7 @@ Rule Austria 1947 only - Apr 6 2:00s 1:00 S Rule Austria 1948 only - Apr 18 2:00s 1:00 S Rule Austria 1980 only - Apr 6 0:00 1:00 S Rule Austria 1980 only - Sep 28 0:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Vienna 1:05:21 - LMT 1893 Apr 1:00 C-Eur CE%sT 1920 1:00 Austria CE%sT 1940 Apr 1 2:00s @@ -862,7 +862,7 @@ Zone Europe/Vienna 1:05:21 - LMT 1893 Apr # Belarussian government decided against changing to winter time.... # http://eng.belta.by/all_news/society/Belarus-decides-against-adjusting-time-in-Russias-wake_i_76335.html # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Minsk 1:50:16 - LMT 1880 1:50 - MMT 1924 May 2 # Minsk Mean Time 2:00 - EET 1930 Jun 21 @@ -926,7 +926,7 @@ Rule Belgium 1945 only - Apr 2 2:00s 1:00 S Rule Belgium 1945 only - Sep 16 2:00s 0 - Rule Belgium 1946 only - May 19 2:00s 1:00 S Rule Belgium 1946 only - Oct 7 2:00s 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Brussels 0:17:30 - LMT 1880 0:17:30 - BMT 1892 May 1 12:00 # Brussels MT 0:00 - WET 1914 Nov 8 @@ -953,7 +953,7 @@ Rule Bulg 1979 only - Oct 1 1:00 0 - Rule Bulg 1980 1982 - Apr Sat>=1 23:00 1:00 S Rule Bulg 1980 only - Sep 29 1:00 0 - Rule Bulg 1981 only - Sep 27 2:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Sofia 1:33:16 - LMT 1880 1:56:56 - IMT 1894 Nov 30 # Istanbul MT? 2:00 - EET 1942 Nov 2 3:00 @@ -986,7 +986,7 @@ Rule Czech 1946 only - May 6 2:00s 1:00 S Rule Czech 1946 1949 - Oct Sun>=1 2:00s 0 - Rule Czech 1947 1948 - Apr Sun>=15 2:00s 1:00 S Rule Czech 1949 only - Apr 9 2:00s 1:00 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Prague 0:57:44 - LMT 1850 0:57:44 - PMT 1891 Oct # Prague Mean Time 1:00 C-Eur CE%sT 1945 May 9 @@ -1048,7 +1048,7 @@ Rule Denmark 1947 only - Aug 10 2:00s 0 - Rule Denmark 1948 only - May 9 2:00s 1:00 S Rule Denmark 1948 only - Aug 8 2:00s 0 - # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Copenhagen 0:50:20 - LMT 1890 0:50:20 - CMT 1894 Jan 1 # Copenhagen MT 1:00 Denmark CE%sT 1942 Nov 2 2:00s @@ -1145,7 +1145,7 @@ Rule Thule 1993 2006 - Oct lastSun 2:00 0 S Rule Thule 2007 max - Mar Sun>=8 2:00 1:00 D Rule Thule 2007 max - Nov Sun>=1 2:00 0 S # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Danmarkshavn -1:14:40 - LMT 1916 Jul 28 -3:00 - -03 1980 Apr 6 2:00 -3:00 EU -03/-02 1996 @@ -1211,7 +1211,7 @@ Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik air base # From Urmet Jänes (2002-03-28): # The legislative reference is Government decree No. 84 on 2002-02-21. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Tallinn 1:39:00 - LMT 1880 1:39:00 - TMT 1918 Feb # Tallinn Mean Time 1:00 C-Eur CE%sT 1919 Jul @@ -1274,7 +1274,7 @@ Rule Finland 1981 1982 - Sep lastSun 3:00 0 - # Milne says Helsinki (Helsingfors) time was 1:39:49.2 (official document); # round to nearest. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Helsinki 1:39:49 - LMT 1878 May 31 1:39:49 - HMT 1921 May # Helsinki Mean Time 2:00 Finland EE%sT 1983 @@ -1364,7 +1364,7 @@ Rule France 1976 only - Sep 26 1:00 0 - # but Howse quotes the actual French legislation as saying 0:09:21. # Go with Howse. Howse writes that the time in France was officially based # on PMT-0:09:21 until 1978-08-09, when the time base finally switched to UTC. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01 0:09:21 - PMT 1911 Mar 11 0:01 # Paris MT # Shanks & Pottenger give 1940 Jun 14 0:00; go with Excoffier and Le Corre. @@ -1412,7 +1412,7 @@ Rule SovietZone 1945 only - May 24 2:00 2:00 M # Midsummer Rule SovietZone 1945 only - Sep 24 3:00 1:00 S Rule SovietZone 1945 only - Nov 18 2:00s 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Berlin 0:53:28 - LMT 1893 Apr 1:00 C-Eur CE%sT 1945 May 24 2:00 1:00 SovietZone CE%sT 1946 @@ -1440,7 +1440,7 @@ Link Europe/Zurich Europe/Busingen # is in Europe. Our reference location Tbilisi is in the Asian part. # Gibraltar -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2 0:00s 0:00 GB-Eire %s 1957 Apr 14 2:00 1:00 - CET 1982 @@ -1471,7 +1471,7 @@ Rule Greece 1979 only - Apr 1 9:00 1:00 S Rule Greece 1979 only - Sep 29 2:00 0 - Rule Greece 1980 only - Apr 1 0:00 1:00 S Rule Greece 1980 only - Sep 28 0:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Athens 1:34:52 - LMT 1895 Sep 14 1:34:52 - AMT 1916 Jul 28 0:01 # Athens MT 2:00 Greece EE%sT 1941 Apr 30 @@ -1508,7 +1508,7 @@ Rule Hungary 1956 only - Sep lastSun 0:00 0 - Rule Hungary 1957 only - Jun Sun>=1 1:00 1:00 S Rule Hungary 1957 only - Sep lastSun 3:00 0 - Rule Hungary 1980 only - Apr 6 1:00 1:00 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Budapest 1:16:20 - LMT 1890 Oct 1:00 C-Eur CE%sT 1918 1:00 Hungary CE%sT 1941 Apr 8 @@ -1569,7 +1569,7 @@ Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 - Rule Iceland 1949 only - Oct 30 1:00s 0 - Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 - Rule Iceland 1967 only - Oct 29 1:00s 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Atlantic/Reykjavik -1:28 - LMT 1908 -1:00 Iceland -01/+00 1968 Apr 7 1:00s 0:00 - GMT @@ -1583,6 +1583,25 @@ Zone Atlantic/Reykjavik -1:28 - LMT 1908 # But these events all occurred before the 1970 cutoff, # so record only the time in Rome. # +# From Stephen Trainor (2019-05-06): +# http://www.ac-ilsestante.it/MERIDIANE/ora_legale/ORA_LEGALE_ESTIVA_IN_ITALIA.htm +# ... the [1866] law went into effect on 12 December 1866, rather than +# the date of the decree (22 Sep 1866) +# https://web.archive.org/web/20070824155341/http://www.iav.it/planetario/didastro/didastro/english.htm +# ... "In Italy in 1866 there were 6 railway times (Torino, Verona, Firenze, +# Roma, Napoli, Palermo). On that year it was decided to unify them, adopting +# the average time of Rome (even if this city was not yet part of the +# kingdom). On the 12th December 1866, on the starting of the winter time +# table, it took effect in the railways, the post office and the telegraph, +# not only for the internal service but also for the public.... Milano set +# the public watches on the Rome time on the same day (12th December 1866), +# Torino and Bologna on the 1st January 1867, Venezia the 1st May 1880 and the +# last city was Cagliari in 1886." +# +# From Luigi Rosa (2019-05-07): +# this is the scan of the decree: +# http://www.radiomarconi.com/marconi/filopanti/1866c.jpg +# # From Michael Deckers (2016-10-24): # http://www.ac-ilsestante.it/MERIDIANE/ora_legale quotes a law of 1893-08-10 # ... [translated as] "The preceding dispositions will enter into @@ -1593,6 +1612,7 @@ Zone Atlantic/Reykjavik -1:28 - LMT 1908 # The authoritative source for time in Italy is the national metrological # institute, which has a summary page of historical DST data at # http://www.inrim.it/res/tf/ora_legale_i.shtml +# [now at http://oldsite.inrim.it/res/tf/ora_legale_i.shtml as of 2017] # (2016-10-24): # http://www.renzobaldini.it/le-ore-legali-in-italia/ # has still different data for 1944. It divides Italy in two, as @@ -1656,8 +1676,8 @@ Rule Italy 1976 only - May 30 0:00s 1:00 S Rule Italy 1977 1979 - May Sun>=22 0:00s 1:00 S Rule Italy 1978 only - Oct 1 0:00s 0 - Rule Italy 1979 only - Sep 30 0:00s 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Europe/Rome 0:49:56 - LMT 1866 Sep 22 +# Zone NAME STDOFF RULES FORMAT [UNTIL] +Zone Europe/Rome 0:49:56 - LMT 1866 Dec 12 0:49:56 - RMT 1893 Oct 31 23:49:56 # Rome Mean 1:00 Italy CE%sT 1943 Sep 10 1:00 C-Eur CE%sT 1944 Jun 4 @@ -1732,7 +1752,7 @@ Rule Latvia 1989 1996 - Sep lastSun 2:00s 0 - # Byalokoz 1919 says Latvia was 1:36:34. # Go with Byalokoz. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Riga 1:36:34 - LMT 1880 1:36:34 - RMT 1918 Apr 15 2:00 # Riga MT 1:36:34 1:00 LST 1918 Sep 16 3:00 # Latvian ST @@ -1802,7 +1822,7 @@ Link Europe/Zurich Europe/Vaduz # http://www.lrvk.lt/nut/11/n1749.htm -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Vilnius 1:41:16 - LMT 1880 1:24:00 - WMT 1917 # Warsaw Mean Time 1:35:36 - KMT 1919 Oct 10 # Kaunas Mean Time @@ -1846,7 +1866,7 @@ Rule Lux 1926 only - Apr 17 23:00 1:00 S Rule Lux 1927 only - Apr 9 23:00 1:00 S Rule Lux 1928 only - Apr 14 23:00 1:00 S Rule Lux 1929 only - Apr 20 23:00 1:00 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun 1:00 Lux CE%sT 1918 Nov 25 0:00 Lux WE%sT 1929 Oct 6 2:00s @@ -1871,7 +1891,7 @@ Rule Malta 1974 only - Sep 16 0:00s 0 - Rule Malta 1975 1979 - Apr Sun>=15 2:00 1:00 S Rule Malta 1975 1980 - Sep Sun>=15 2:00 0 - Rule Malta 1980 only - Mar 31 2:00 1:00 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 0:00s # Valletta 1:00 Italy CE%sT 1973 Mar 31 1:00 Malta CE%sT 1981 @@ -1940,7 +1960,7 @@ Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 0:00s # Valletta Rule Moldova 1997 max - Mar lastSun 2:00 1:00 S Rule Moldova 1997 max - Oct lastSun 3:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Chisinau 1:55:20 - LMT 1880 1:55 - CMT 1918 Feb 15 # Chisinau MT 1:44:24 - BMT 1931 Jul 24 # Bucharest MT @@ -1956,7 +1976,7 @@ Zone Europe/Chisinau 1:55:20 - LMT 1880 # Monaco # Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's # more precise 0:09:21. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Monaco 0:29:32 - LMT 1891 Mar 15 0:09:21 - PMT 1911 Mar 11 # Paris Mean Time 0:00 France WE%sT 1945 Sep 16 3:00 @@ -2031,8 +2051,8 @@ Rule Neth 1945 only - Apr 2 2:00s 1:00 S Rule Neth 1945 only - Sep 16 2:00s 0 - # # Amsterdam Mean Time was +00:19:32.13, but the .13 is omitted -# below because the current format requires GMTOFF to be an integer. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# below because the current format requires STDOFF to be an integer. +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Amsterdam 0:19:32 - LMT 1835 0:19:32 Neth %s 1937 Jul 1 0:20 Neth +0020/+0120 1940 May 16 0:00 @@ -2051,7 +2071,7 @@ Rule Norway 1945 only - Oct 1 2:00s 0 - Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 - Rule Norway 1965 only - Apr 25 2:00s 1:00 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Oslo 0:43:00 - LMT 1895 Jan 1 1:00 Norway CE%sT 1940 Aug 10 23:00 1:00 C-Eur CE%sT 1945 Apr 2 2:00 @@ -2142,7 +2162,7 @@ Rule Poland 1959 1961 - Oct Sun>=1 1:00s 0 - Rule Poland 1960 only - Apr 3 1:00s 1:00 S Rule Poland 1961 1964 - May lastSun 1:00s 1:00 S Rule Poland 1962 1964 - Sep lastSun 1:00s 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Warsaw 1:24:00 - LMT 1880 1:24:00 - WMT 1915 Aug 5 # Warsaw Mean Time 1:00 C-Eur CE%sT 1918 Sep 16 3:00 @@ -2247,7 +2267,7 @@ Rule Port 1980 only - Mar lastSun 0:00s 1:00 S Rule Port 1981 1982 - Mar lastSun 1:00s 1:00 S Rule Port 1983 only - Mar lastSun 2:00s 1:00 S # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Lisbon -0:36:45 - LMT 1884 -0:36:45 - LMT 1912 Jan 1 0:00u # Lisbon MT 0:00 Port WE%sT 1966 Apr 3 2:00 @@ -2306,7 +2326,7 @@ Rule Romania 1980 only - Apr 5 23:00 1:00 S Rule Romania 1980 only - Sep lastSun 1:00 0 - Rule Romania 1991 1993 - Mar lastSun 0:00s 1:00 S Rule Romania 1991 1993 - Sep lastSun 0:00s 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct 1:44:24 - BMT 1931 Jul 24 # Bucharest MT 2:00 Romania EE%sT 1981 Mar 29 2:00s @@ -3345,7 +3365,7 @@ Zone Asia/Anadyr 11:49:56 - LMT 1924 May 2 # See Europe/Rome. # Serbia -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Belgrade 1:22:00 - LMT 1884 1:00 - CET 1941 Apr 18 23:00 1:00 C-Eur CE%sT 1945 @@ -3451,7 +3471,7 @@ Rule SpainAfrica 1976 only - Aug 1 0:00 0 - Rule SpainAfrica 1977 only - Sep 28 0:00 0 - Rule SpainAfrica 1978 only - Jun 1 0:00 1:00 S Rule SpainAfrica 1978 only - Aug 4 0:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Madrid -0:14:44 - LMT 1900 Dec 31 23:45:16 0:00 Spain WE%sT 1940 Mar 16 23:00 1:00 Spain CE%sT 1979 @@ -3519,7 +3539,7 @@ Zone Atlantic/Canary -1:01:36 - LMT 1922 Mar # Las Palmas de Gran C. # # Source: The newspaper "Dagens Nyheter", 1916-10-01, page 7 upper left. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1 1:00:14 - SET 1900 Jan 1 # Swedish Time 1:00 - CET 1916 May 14 23:00 @@ -3622,7 +3642,7 @@ Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Zurich 0:34:08 - LMT 1853 Jul 16 # See above comment. 0:29:46 - BMT 1894 Jun # Bern Mean Time 1:00 Swiss CE%sT 1981 @@ -3772,7 +3792,7 @@ Rule Turkey 1986 1995 - Sep lastSun 1:00s 0 - Rule Turkey 1994 only - Mar 20 1:00s 1:00 S Rule Turkey 1995 2006 - Mar lastSun 1:00s 1:00 S Rule Turkey 1996 2006 - Oct lastSun 1:00s 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Istanbul 1:55:52 - LMT 1880 1:56:56 - IMT 1910 Oct # Istanbul Mean Time? 2:00 Turkey EE%sT 1978 Oct 15 @@ -3869,16 +3889,8 @@ Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents. # controversial, and some day "Kyiv" may become substantially more popular in # English; in the meantime, stick with the traditional English "Kiev" as that # means less disruption for our users. -# -# Anyway, none of the common English-language spellings (Kiev, Kyiv, Kieff, -# Kijeff, Kijev, Kiyef, Kiyeff) do justice to the common pronunciation in -# Ukrainian, namely [ˈkɪjiu̯] (IPA). This pronunciation has nothing like an -# English "v" or "f", and instead trails off with what an English-speaker -# would call a demure "oo" sound, and it would would be better anglicized as -# "Kuiyu". Here's a sound file, if you would like to do as the Kuiyuvians do: -# https://commons.wikimedia.org/wiki/File:Uk-Київ.ogg -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] # This represents most of Ukraine. See above for the spelling of "Kiev". Zone Europe/Kiev 2:02:04 - LMT 1880 2:02:04 - KMT 1924 May 2 # Kiev Mean Time diff --git a/factory b/factory index d4e76599cd8c..9f5fc33023a3 100644 --- a/factory +++ b/factory @@ -8,5 +8,5 @@ # time zone abbreviation "-00", indicating that the actual time zone # is unknown. -# Zone NAME GMTOFF RULES FORMAT +# Zone NAME STDOFF RULES FORMAT Zone Factory 0 - -00 diff --git a/northamerica b/northamerica index eee8de0fbc7a..9e3577bca697 100644 --- a/northamerica +++ b/northamerica @@ -93,10 +93,33 @@ # was the first nationwide legal time standard, and apparently # time was just called "Standard Time" or "Daylight Saving Time". -# From Arthur David Olson: -# US Daylight Saving Time ended on the last Sunday of *October* in 1974. -# See, for example, the front page of the Saturday, 1974-10-26 -# and Sunday, 1974-10-27 editions of the Washington Post. +# From Paul Eggert (2019-06-04): +# Here is the legal basis for the US federal rules. +# * Public Law 65-106 (1918-03-19) implemented standard and daylight saving +# time for the first time across the US, springing forward on March's last +# Sunday and falling back on October's last Sunday. +# https://www.loc.gov/law/help/statutes-at-large/65th-congress/session-2/c65s2ch24.pdf +# * Public Law 66-40 (1919-08-20) repealed DST on October 1919's last Sunday. +# https://www.loc.gov/law/help/statutes-at-large/66th-congress/session-1/c66s1ch51.pdf +# * Public Law 77-403 (1942-01-20) started wartime DST on 1942-02-09. +# https://www.loc.gov/law/help/statutes-at-large/77th-congress/session-2/c77s2ch7.pdf +# * Public Law 79-187 (1945-09-25) ended wartime DST on 1945-09-30. +# https://www.loc.gov/law/help/statutes-at-large/79th-congress/session-1/c79s1ch388.pdf +# * Public Law 89-387 (1966-04-13) reinstituted a national standard for DST, +# from April's last Sunday to October's last Sunday, effective 1967. +# https://www.govinfo.gov/content/pkg/STATUTE-80/pdf/STATUTE-80-Pg107.pdf +# * Public Law 93-182 (1973-12-15) moved the 1974 spring-forward to 01-06. +# https://www.govinfo.gov/content/pkg/STATUTE-87/pdf/STATUTE-87-Pg707.pdf +# * Public Law 93-434 (1974-10-05) moved the 1975 spring-forward to +# February's last Sunday. +# https://www.govinfo.gov/content/pkg/STATUTE-88/pdf/STATUTE-88-Pg1209.pdf +# * Public Law 99-359 (1986-07-08) moved the spring-forward to April's first +# Sunday. +# https://www.govinfo.gov/content/pkg/STATUTE-100/pdf/STATUTE-100-Pg764.pdf +# * Public Law 109-58 (2005-08-08), effective 2007, moved the spring-forward +# to March's second Sunday and the fall-back to November's first Sunday. +# https://www.govinfo.gov/content/pkg/PLAW-109publ58/pdf/PLAW-109publ58.pdf +# All transitions are at 02:00 local time. # From Arthur David Olson: # Before the Uniform Time Act of 1966 took effect in 1967, observance of @@ -152,11 +175,11 @@ Rule US 1918 1919 - Mar lastSun 2:00 1:00 D Rule US 1918 1919 - Oct lastSun 2:00 0 S Rule US 1942 only - Feb 9 2:00 1:00 W # War Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace -Rule US 1945 only - Sep lastSun 2:00 0 S +Rule US 1945 only - Sep 30 2:00 0 S Rule US 1967 2006 - Oct lastSun 2:00 0 S Rule US 1967 1973 - Apr lastSun 2:00 1:00 D Rule US 1974 only - Jan 6 2:00 1:00 D -Rule US 1975 only - Feb 23 2:00 1:00 D +Rule US 1975 only - Feb lastSun 2:00 1:00 D Rule US 1976 1986 - Apr lastSun 2:00 1:00 D Rule US 1987 2006 - Apr Sun>=1 2:00 1:00 D Rule US 2007 max - Mar Sun>=8 2:00 1:00 D @@ -173,7 +196,7 @@ Rule US 2007 max - Nov Sun>=1 2:00 0 S # increase the chances that they'll actually get compiled and to # avoid the need to duplicate the US rules in another file. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone EST -5:00 - EST Zone MST -7:00 - MST Zone HST -10:00 - HST @@ -330,7 +353,7 @@ Rule NYC 1920 only - Oct lastSun 2:00 0 S Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D Rule NYC 1921 1954 - Sep lastSun 2:00 0 S Rule NYC 1955 1966 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58 -5:00 US E%sT 1920 -5:00 NYC E%sT 1942 @@ -390,7 +413,7 @@ Rule Chicago 1921 only - Mar lastSun 2:00 1:00 D Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24 -6:00 US C%sT 1920 -6:00 Chicago C%sT 1936 Mar 1 2:00 @@ -458,7 +481,7 @@ Rule Denver 1920 only - Oct lastSun 2:00 0 S Rule Denver 1921 only - May 22 2:00 0 S Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D Rule Denver 1965 1966 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00:04 -7:00 US M%sT 1920 -7:00 Denver M%sT 1942 @@ -511,7 +534,7 @@ Rule CA 1949 only - Jan 1 2:00 0 S Rule CA 1950 1966 - Apr lastSun 1:00 1:00 D Rule CA 1950 1961 - Sep lastSun 2:00 0 S Rule CA 1962 1966 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 -8:00 US P%sT 1946 -8:00 CA P%sT 1967 @@ -619,7 +642,7 @@ Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 # So they won't be waiting for Alaska to join them on 2019-03-10, but will # rather change their clocks twice in seven weeks. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Juneau 15:02:19 - LMT 1867 Oct 19 15:33:32 -8:57:41 - LMT 1900 Aug 20 12:00 -8:00 - PST 1942 @@ -739,7 +762,7 @@ Zone America/Adak 12:13:22 - LMT 1867 Oct 19 12:44:35 # Note that 1933-05-21 was a Sunday. # We're left to guess the time of day when Act 163 was approved; guess noon. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00 -10:30 - HST 1933 Apr 30 2:00 -10:30 1:00 HDT 1933 May 21 12:00 @@ -769,7 +792,7 @@ Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00 # Shanks says the 1944 experiment came to an end on 1944-03-17. # Go with the Arizona State Library instead. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42 -7:00 US M%sT 1944 Jan 1 0:01 -7:00 - MST 1944 Apr 1 0:01 @@ -795,7 +818,7 @@ Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42 # quarter of Idaho county) and eastern Oregon (most of Malheur County) # switched four weeks late in 1974. # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11 -8:00 US P%sT 1923 May 13 2:00 -7:00 US M%sT 1974 @@ -867,7 +890,7 @@ Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11 Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Indiana/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:15:22 -6:00 US C%sT 1920 -6:00 Indianapolis C%sT 1942 @@ -887,7 +910,7 @@ Rule Marengo 1951 only - Apr lastSun 2:00 1:00 D Rule Marengo 1951 only - Sep lastSun 2:00 0 S Rule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D Rule Marengo 1954 1960 - Sep lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:14:37 -6:00 US C%sT 1951 -6:00 Marengo C%sT 1961 Apr 30 2:00 @@ -911,7 +934,7 @@ Rule Vincennes 1956 1963 - Apr lastSun 2:00 1:00 D Rule Vincennes 1960 only - Oct lastSun 2:00 0 S Rule Vincennes 1961 only - Sep lastSun 2:00 0 S Rule Vincennes 1962 1963 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Indiana/Vincennes -5:50:07 - LMT 1883 Nov 18 12:09:53 -6:00 US C%sT 1946 -6:00 Vincennes C%sT 1964 Apr 26 2:00 @@ -932,7 +955,7 @@ Rule Perry 1956 1963 - Apr lastSun 2:00 1:00 D Rule Perry 1960 only - Oct lastSun 2:00 0 S Rule Perry 1961 only - Sep lastSun 2:00 0 S Rule Perry 1962 1963 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Indiana/Tell_City -5:47:03 - LMT 1883 Nov 18 12:12:57 -6:00 US C%sT 1946 -6:00 Perry C%sT 1964 Apr 26 2:00 @@ -948,7 +971,7 @@ Rule Pike 1955 only - May 1 0:00 1:00 D Rule Pike 1955 1960 - Sep lastSun 2:00 0 S Rule Pike 1956 1964 - Apr lastSun 2:00 1:00 D Rule Pike 1961 1964 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Indiana/Petersburg -5:49:07 - LMT 1883 Nov 18 12:10:53 -6:00 US C%sT 1955 -6:00 Pike C%sT 1965 Apr 25 2:00 @@ -970,7 +993,7 @@ Rule Starke 1947 1954 - Sep lastSun 2:00 0 S Rule Starke 1955 1956 - Oct lastSun 2:00 0 S Rule Starke 1957 1958 - Sep lastSun 2:00 0 S Rule Starke 1959 1961 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:13:30 -6:00 US C%sT 1947 -6:00 Starke C%sT 1962 Apr 29 2:00 @@ -986,7 +1009,7 @@ Rule Pulaski 1946 1960 - Apr lastSun 2:00 1:00 D Rule Pulaski 1946 1954 - Sep lastSun 2:00 0 S Rule Pulaski 1955 1956 - Oct lastSun 2:00 0 S Rule Pulaski 1957 1960 - Sep lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Indiana/Winamac -5:46:25 - LMT 1883 Nov 18 12:13:35 -6:00 US C%sT 1946 -6:00 Pulaski C%sT 1961 Apr 30 2:00 @@ -997,7 +1020,7 @@ Zone America/Indiana/Winamac -5:46:25 - LMT 1883 Nov 18 12:13:35 -5:00 US E%sT # # Switzerland County, Indiana, did not observe DST from 1973 through 2005. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:19:44 -6:00 US C%sT 1954 Apr 25 2:00 -5:00 - EST 1969 @@ -1022,7 +1045,7 @@ Rule Louisville 1941 only - Sep lastSun 2:00 0 S Rule Louisville 1946 only - Jun 2 2:00 0 S Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S Rule Louisville 1956 1960 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58 -6:00 US C%sT 1921 -6:00 Louisville C%sT 1942 @@ -1128,7 +1151,7 @@ Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Detroit 1948 only - Apr lastSun 2:00 1:00 D Rule Detroit 1948 only - Sep lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Detroit -5:32:11 - LMT 1905 -6:00 - CST 1915 May 15 2:00 -5:00 - EST 1942 @@ -1145,7 +1168,7 @@ Rule Menominee 1946 only - Apr lastSun 2:00 1:00 D Rule Menominee 1946 only - Sep lastSun 2:00 0 S Rule Menominee 1966 only - Apr lastSun 2:00 1:00 D Rule Menominee 1966 only - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00 -6:00 US C%sT 1946 -6:00 Menominee C%sT 1969 Apr 27 2:00 @@ -1379,7 +1402,7 @@ Rule StJohns 2007 2011 - Mar Sun>=8 0:01 1:00 D Rule StJohns 2007 2010 - Nov Sun>=1 0:01 0 S # # St John's has an apostrophe, but Posix file names can't have apostrophes. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/St_Johns -3:30:52 - LMT 1884 -3:30:52 StJohns N%sT 1918 -3:30:52 Canada N%sT 1919 @@ -1392,7 +1415,7 @@ Zone America/St_Johns -3:30:52 - LMT 1884 # most of east Labrador # The name 'Happy Valley-Goose Bay' is too long; use 'Goose Bay'. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay -3:30:52 - NST 1918 -3:30:52 Canada N%sT 1919 @@ -1466,7 +1489,7 @@ Rule Halifax 1956 1959 - Apr lastSun 2:00 1:00 D Rule Halifax 1956 1959 - Sep lastSun 2:00 0 S Rule Halifax 1962 1973 - Apr lastSun 2:00 1:00 D Rule Halifax 1962 1973 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Halifax -4:14:24 - LMT 1902 Jun 15 -4:00 Halifax A%sT 1918 -4:00 Canada A%sT 1919 @@ -1504,7 +1527,7 @@ Rule Moncton 1946 1956 - Sep lastSun 2:00 0 S Rule Moncton 1957 1972 - Oct lastSun 2:00 0 S Rule Moncton 1993 2006 - Apr Sun>=1 0:01 1:00 D Rule Moncton 1993 2006 - Oct lastSun 0:01 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Moncton -4:19:08 - LMT 1883 Dec 9 -5:00 - EST 1902 Jun 15 -4:00 Canada A%sT 1933 @@ -1533,7 +1556,7 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9 # For lack of better info, guess this practice began around 1970, contra to # Shanks & Pottenger who have this region observing AST/ADT. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Blanc-Sablon -3:48:28 - LMT 1884 -4:00 Canada A%sT 1970 -4:00 - AST @@ -1701,19 +1724,10 @@ Rule Toronto 1922 1923 - May Sun>=8 2:00 1:00 D # was meant. Rule Toronto 1922 1926 - Sep Sun>=15 2:00 0 S Rule Toronto 1924 1927 - May Sun>=1 2:00 1:00 D -# The 1927-to-1939 rules can be expressed more simply as -# Rule Toronto 1927 1937 - Sep Sun>=25 2:00 0 S -# Rule Toronto 1928 1937 - Apr Sun>=25 2:00 1:00 D -# Rule Toronto 1938 1940 - Apr lastSun 2:00 1:00 D -# Rule Toronto 1938 1939 - Sep lastSun 2:00 0 S -# The rules below avoid use of Sun>=25 -# (which pre-2004 versions of zic cannot handle). -Rule Toronto 1927 1932 - Sep lastSun 2:00 0 S -Rule Toronto 1928 1931 - Apr lastSun 2:00 1:00 D -Rule Toronto 1932 only - May 1 2:00 1:00 D -Rule Toronto 1933 1940 - Apr lastSun 2:00 1:00 D -Rule Toronto 1933 only - Oct 1 2:00 0 S -Rule Toronto 1934 1939 - Sep lastSun 2:00 0 S +Rule Toronto 1927 1937 - Sep Sun>=25 2:00 0 S +Rule Toronto 1928 1937 - Apr Sun>=25 2:00 1:00 D +Rule Toronto 1938 1940 - Apr lastSun 2:00 1:00 D +Rule Toronto 1938 1939 - Sep lastSun 2:00 0 S Rule Toronto 1945 1946 - Sep lastSun 2:00 0 S Rule Toronto 1946 only - Apr lastSun 2:00 1:00 D Rule Toronto 1947 1949 - Apr lastSun 0:00 1:00 D @@ -1746,7 +1760,7 @@ Rule Toronto 1957 1973 - Oct lastSun 2:00 0 S # War,... [t]he cities agreed to implement DST during the summer # months for the remainder of the war years. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Toronto -5:17:32 - LMT 1895 -5:00 Canada E%sT 1919 -5:00 Toronto E%sT 1942 Feb 9 2:00s @@ -1821,7 +1835,7 @@ Rule Winn 1963 only - Sep 22 2:00 0 S Rule Winn 1966 1986 - Apr lastSun 2:00s 1:00 D Rule Winn 1966 2005 - Oct lastSun 2:00s 0 S Rule Winn 1987 2005 - Apr Sun>=1 2:00s 1:00 D -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16 -6:00 Winn C%sT 2006 -6:00 Canada C%sT @@ -1843,6 +1857,13 @@ Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16 # Willett (1914-03) notes that DST "has been in operation ... in the # City of Moose Jaw, Saskatchewan, for one year." +# From Paul Eggert (2019-04-26): +# Chris Pearce's book "The Great Daylight Saving Time Controversy" (2017) +# says that Regina observed DST in 1914-1917. No dates and times, +# unfortunately. It also says that in 1914 Saskatoon observed DST +# from 1 June to 6 July, and that DST was also tried out in Davidson, +# Melfort, and Prince Albert. + # From Paul Eggert (2006-03-22): # Shanks & Pottenger say that since 1970 this region has mostly been as Regina. # Some western towns (e.g. Swift Current) switched from MST/MDT to CST in 1972. @@ -1905,7 +1926,7 @@ Rule Swift 1957 only - Oct lastSun 2:00 0 S Rule Swift 1959 1961 - Apr lastSun 2:00 1:00 D Rule Swift 1959 only - Oct lastSun 2:00 0 S Rule Swift 1960 1961 - Sep lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Regina -6:58:36 - LMT 1905 Sep -7:00 Regina M%sT 1960 Apr lastSun 2:00 -6:00 - CST @@ -1936,7 +1957,7 @@ Rule Edm 1969 only - Apr lastSun 2:00 1:00 D Rule Edm 1969 only - Oct lastSun 2:00 0 S Rule Edm 1972 1986 - Apr lastSun 2:00 1:00 D Rule Edm 1972 2006 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Edmonton -7:33:52 - LMT 1906 Sep -7:00 Edm M%sT 1987 -7:00 Canada M%sT @@ -2029,7 +2050,7 @@ Rule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D Rule Vanc 1946 only - Oct 13 2:00 0 S Rule Vanc 1947 1961 - Sep lastSun 2:00 0 S Rule Vanc 1962 2006 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Vancouver -8:12:28 - LMT 1884 -8:00 Vanc P%sT 1987 -8:00 Canada P%sT @@ -2100,7 +2121,7 @@ Zone America/Creston -7:46:04 - LMT 1884 # varying the manner of reckoning standard time. # # * Yukon Territory Commissioner's Order 1966-20 Interpretation Ordinance -# http://? - no online source found +# [no online source found] # # * Standard Time and Time Zones in Canada; Thomson, Malcolm M.; JRASC, # Vol. 64, pp.129-162; June 1970; SAO/NASA Astrophysics Data System (ADS) @@ -2133,7 +2154,7 @@ Zone America/Creston -7:46:04 - LMT 1884 # to say eight hours behind Greenwich Time. # # * O.I.C. 1980/02 INTERPRETATION ACT -# http://? - no online source found +# [no online source found] # # * Yukon Daylight Saving Time, YOIC 1987/56 # https://www.canlii.org/en/yk/laws/regu/yoic-1987-56/latest/yoic-1987-56.html @@ -2349,7 +2370,7 @@ Rule NT_YK 1965 only - Oct lastSun 2:00 0 S Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] # aka Panniqtuuq Zone America/Pangnirtung 0 - -00 1921 # trading post est. -4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00 @@ -2496,7 +2517,7 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 # From Paul Eggert (2001-03-03): # -# http://www.latimes.com/news/nation/20010303/t000018766.html +# https://www.latimes.com/archives/la-xpm-2001-mar-03-mn-32561-story.html # James F. Smith writes in today's LA Times # * Sonora will continue to observe standard time. # * Last week Mexico City's mayor Andrés Manuel López Obrador decreed that @@ -2623,7 +2644,7 @@ Rule Mexico 2001 only - May Sun>=1 2:00 1:00 D Rule Mexico 2001 only - Sep lastSun 2:00 0 S Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D Rule Mexico 2002 max - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] # Quintana Roo; represented by Cancún Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56 -6:00 - CST 1981 Dec 23 @@ -2816,7 +2837,7 @@ Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Bahamas 1964 1975 - Oct lastSun 2:00 0 S Rule Bahamas 1964 1975 - Apr lastSun 2:00 1:00 D -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Nassau -5:09:30 - LMT 1912 Mar 2 -5:00 Bahamas E%sT 1976 -5:00 US E%sT @@ -2831,7 +2852,7 @@ Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D Rule Barb 1979 only - Sep 30 2:00 0 S Rule Barb 1980 only - Sep 25 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Barbados -3:58:29 - LMT 1924 # Bridgetown -3:58:29 - BMT 1932 # Bridgetown Mean Time -4:00 Barb A%sT @@ -2845,7 +2866,7 @@ Rule Belize 1973 only - Dec 5 0:00 1:00 CDT Rule Belize 1974 only - Feb 9 0:00 0 CST Rule Belize 1982 only - Dec 18 0:00 1:00 CDT Rule Belize 1983 only - Feb 12 0:00 0 CST -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Belize -5:52:48 - LMT 1912 Apr -6:00 Belize %s @@ -2862,7 +2883,7 @@ Zone America/Belize -5:52:48 - LMT 1912 Apr # Friday, the same thing will happen in Bermuda. # http://www.theroyalgazette.com/apps/pbcs.dll/article?AID=/20060529/NEWS/105290135 -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Atlantic/Bermuda -4:19:18 - LMT 1930 Jan 1 2:00 # Hamilton -4:00 - AST 1974 Apr 28 2:00 -4:00 Canada A%sT 1976 @@ -2884,7 +2905,7 @@ Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D Rule CR 1991 only - Jul 1 0:00 0 S Rule CR 1992 only - Mar 15 0:00 0 S # There are too many San Josés elsewhere, so we'll use 'Costa Rica'. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Costa_Rica -5:36:13 - LMT 1890 # San José -5:36:13 - SJMT 1921 Jan 15 # San José Mean Time -6:00 CR C%sT @@ -3090,7 +3111,7 @@ Rule Cuba 2012 only - Apr 1 0:00s 1:00 D Rule Cuba 2012 max - Nov Sun>=1 0:00s 0 S Rule Cuba 2013 max - Mar Sun>=8 0:00s 1:00 D -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Havana -5:29:28 - LMT 1890 -5:29:36 - HMT 1925 Jul 19 12:00 # Havana MT -5:00 Cuba C%sT @@ -3125,7 +3146,7 @@ Rule DR 1969 1973 - Oct lastSun 0:00 0:30 -0430 Rule DR 1970 only - Feb 21 0:00 0 EST Rule DR 1971 only - Jan 20 0:00 0 EST Rule DR 1972 1974 - Jan 21 0:00 0 EST -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Santo_Domingo -4:39:36 - LMT 1890 -4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT -5:00 DR %s 1974 Oct 27 @@ -3140,7 +3161,7 @@ Rule Salv 1987 1988 - May Sun>=1 0:00 1:00 D Rule Salv 1987 1988 - Sep lastSun 0:00 0 S # There are too many San Salvadors elsewhere, so use America/El_Salvador # instead of America/San_Salvador. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador -6:00 Salv C%sT @@ -3173,7 +3194,7 @@ Rule Guat 1991 only - Mar 23 0:00 1:00 D Rule Guat 1991 only - Sep 7 0:00 0 S Rule Guat 2006 only - Apr 30 0:00 1:00 D Rule Guat 2006 only - Oct 1 0:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5 -6:00 Guat C%sT @@ -3259,7 +3280,7 @@ Rule Haiti 2012 2015 - Mar Sun>=8 2:00 1:00 D Rule Haiti 2012 2015 - Nov Sun>=1 2:00 0 S Rule Haiti 2017 max - Mar Sun>=8 2:00 1:00 D Rule Haiti 2017 max - Nov Sun>=1 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Port-au-Prince -4:49:20 - LMT 1890 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT -5:00 Haiti E%sT @@ -3298,7 +3319,7 @@ Rule Hond 1987 1988 - May Sun>=1 0:00 1:00 D Rule Hond 1987 1988 - Sep lastSun 0:00 0 S Rule Hond 2006 only - May Sun>=1 0:00 1:00 D Rule Hond 2006 only - Aug Mon>=1 0:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr -6:00 Hond C%sT # @@ -3319,7 +3340,7 @@ Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr # Neita L. The politician in all of us. Jamaica Observer 2014-09-20 # http://www.jamaicaobserver.com/columns/The-politician-in-all-of-us_17573647 # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Jamaica -5:07:10 - LMT 1890 # Kingston -5:07:10 - KMT 1912 Feb # Kingston Mean Time -5:00 - EST 1974 @@ -3327,7 +3348,7 @@ Zone America/Jamaica -5:07:10 - LMT 1890 # Kingston -5:00 - EST # Martinique -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France -4:04:20 - FFMT 1911 May # Fort-de-France MT -4:00 - AST 1980 Apr 6 @@ -3391,7 +3412,7 @@ Rule Nic 2005 only - Apr 10 0:00 1:00 D Rule Nic 2005 only - Oct Sun>=1 0:00 0 S Rule Nic 2006 only - Apr 30 2:00 1:00 D Rule Nic 2006 only - Oct Sun>=1 1:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Managua -5:45:08 - LMT 1890 -5:45:12 - MMT 1934 Jun 23 # Managua Mean Time? -6:00 - CST 1973 May @@ -3403,7 +3424,7 @@ Zone America/Managua -5:45:08 - LMT 1890 -6:00 Nic C%sT # Panama -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Panama -5:18:08 - LMT 1890 -5:19:36 - CMT 1908 Apr 22 # Colón Mean Time -5:00 - EST @@ -3411,7 +3432,7 @@ Link America/Panama America/Cayman # Puerto Rico # There are too many San Juans elsewhere, so we'll use 'Puerto_Rico'. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan -4:00 - AST 1942 May 3 -4:00 US A%sT 1946 @@ -3423,7 +3444,7 @@ Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan # St Pierre and Miquelon # There are too many St Pierres elsewhere, so we'll use 'Miquelon'. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre -4:00 - AST 1980 May -3:00 - -03 1987 @@ -3469,7 +3490,7 @@ Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre # by March 2018 for TCI. Magnetic Media. 2017-08-25. # http://magneticmediatv.com/2017/08/time-change-back-by-march-2018-for-tci/ # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Grand_Turk -4:44:32 - LMT 1890 -5:07:10 - KMT 1912 Feb # Kingston Mean Time -5:00 - EST 1979 diff --git a/pacificnew b/pacificnew index 0e6cf079234f..8403219f6236 100644 --- a/pacificnew +++ b/pacificnew @@ -21,7 +21,7 @@ ## Rule Twilite XXXX max uspres Nov Sun>=7 2:00 0 S ## Rule Twilite XXXX max nonpres Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] +# Zone NAME STDOFF RULES/SAVE FORMAT [UNTIL] ## Zone America/Los_Angeles-PET -8:00 US P%sT XXXX ## -8:00 Twilite P%sT diff --git a/southamerica b/southamerica index b66cb88b135e..397a2cc3acd4 100644 --- a/southamerica +++ b/southamerica @@ -396,7 +396,7 @@ Rule Arg 2008 only - Oct Sun>=15 0:00 1:00 - # plus is that this silences a zic complaint that there's no POSIX TZ # setting for timestamps past 2038. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] # # Buenos Aires (BA), Capital Federal (CF), Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 @@ -577,7 +577,7 @@ Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 Link America/Curacao America/Aruba # Bolivia -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/La_Paz -4:32:36 - LMT 1890 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT -4:32:36 1:00 BST 1932 Mar 21 # Bolivia ST @@ -920,14 +920,13 @@ Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - # removed Tocantins. Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - -Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - +Rule Brazil 2016 2019 - Feb Sun>=15 0:00 0 - # From Steffen Thorsen (2017-12-18): # According to many media sources, next year's DST start in Brazil will move to -# the first Sunday of November, and it will stay like that for the years after. +# the first Sunday of November # ... https://www.timeanddate.com/news/time/brazil-delays-dst-2018.html # From Steffen Thorsen (2017-12-20): # http://www.planalto.gov.br/ccivil_03/_ato2015-2018/2017/decreto/D9242.htm -# # From Fábio Gomes (2018-10-04): # The Brazilian president just announced a new change on this year DST. # It was scheduled to start on November 4th and it was changed to November 18th. @@ -935,22 +934,21 @@ Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - # The Brazilian government just announced that the change in DST was # canceled.... Maybe the president Michel Temer also woke up one hour # earlier today. :) -Rule Brazil 2018 max - Nov Sun>=1 0:00 1:00 - -Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - -Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - -Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - -Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - -Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - -Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - -Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - -# From Arthur David Olson (2008-09-29): -# The next is wrong in some years but is better than nothing. -Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - - -# The latest ruleset listed above says that the following states observe DST: +Rule Brazil 2018 only - Nov Sun>=1 0:00 1:00 - +# The last ruleset listed above says that the following states observed DST: # DF, ES, GO, MG, MS, MT, PR, RJ, RS, SC, SP. +# +# From Steffen Thorsen (2019-04-05): +# According to multiple sources the Brazilian president wants to get rid of DST. +# https://gmconline.com.br/noticias/politica/bolsonaro-horario-de-verao-deve-acabar-este-ano +# https://g1.globo.com/economia/noticia/2019/04/05/governo-anuncia-fim-do-horario-de-verao.ghtml +# From Marcus Diniz (2019-04-25): +# Brazil no longer has DST changes - decree signed today +# https://g1.globo.com/politica/noticia/2019/04/25/bolsonaro-assina-decreto-que-acaba-com-o-horario-de-verao.ghtml +# From Daniel Soares de Oliveira (2019-04-26): +# http://www.planalto.gov.br/ccivil_03/_Ato2019-2022/2019/Decreto/D9772.htm -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] # # Fernando de Noronha (administratively part of PE) Zone America/Noronha -2:09:40 - LMT 1914 @@ -1258,6 +1256,8 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914 # https://twitter.com/MinEnergia/status/1029009354001973248 # "We will keep the new time policy unchanged for at least the next 4 years." # So we extend the new rules on Saturdays at 24:00 mainland time indefinitely. +# From Juan Correa (2019-02-04): +# http://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/1498738.pdf # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1931 - Sep 1 0:00 1:00 - @@ -1298,7 +1298,7 @@ Rule Chile 2019 max - Apr Sun>=2 3:00u 0 - Rule Chile 2019 max - Sep Sun>=2 4:00u 1:00 - # IATA SSIM anomalies: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Santiago -4:42:46 - LMT 1890 -4:42:46 - SMT 1910 Jan 10 # Santiago Mean Time -5:00 - -05 1916 Jul 1 @@ -1347,7 +1347,7 @@ Zone Pacific/Easter -7:17:28 - LMT 1890 # Palmer has followed Chile. Prior to that, before the Falklands War, # Palmer used to be supplied from Argentina. # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Antarctica/Palmer 0 - -00 1965 -4:00 Arg -04/-03 1969 Oct 5 -3:00 Arg -03/-02 1982 May @@ -1362,7 +1362,7 @@ Zone Antarctica/Palmer 0 - -00 1965 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule CO 1992 only - May 3 0:00 1:00 - Rule CO 1993 only - Apr 4 0:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Bogota -4:56:16 - LMT 1884 Mar 13 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time -5:00 CO -05/-04 @@ -1387,7 +1387,7 @@ Zone America/Bogota -4:56:16 - LMT 1884 Mar 13 # Netherlands as Kingdom Islands. This won't affect their time zones # though, as far as we know. # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad -4:30 - -0430 1965 -4:00 - AST @@ -1423,7 +1423,7 @@ Link America/Curacao America/Kralendijk # Caribbean Netherlands Rule Ecuador 1992 only - Nov 28 0:00 1:00 - Rule Ecuador 1993 only - Feb 5 0:00 0 - # -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Guayaquil -5:19:20 - LMT 1890 -5:14:00 - QMT 1931 # Quito Mean Time -5:00 Ecuador -05/-04 @@ -1526,7 +1526,7 @@ Rule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 - Rule Falk 1986 2000 - Apr Sun>=16 0:00 0 - Rule Falk 2001 2010 - Apr Sun>=15 2:00 0 - Rule Falk 2001 2010 - Sep Sun>=1 2:00 1:00 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Atlantic/Stanley -3:51:24 - LMT 1890 -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time -4:00 Falk -04/-03 1983 May @@ -1535,13 +1535,13 @@ Zone Atlantic/Stanley -3:51:24 - LMT 1890 -3:00 - -03 # French Guiana -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Cayenne -3:29:20 - LMT 1911 Jul -4:00 - -04 1967 Oct -3:00 - -03 # Guyana -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown -3:45 - -0345 1975 Jul 31 -3:00 - -03 1991 @@ -1635,7 +1635,7 @@ Rule Para 2010 2012 - Apr Sun>=8 0:00 0 - # http://www.presidencia.gov.py/archivos/documentos/DECRETO1264_ey9r8zai.pdf Rule Para 2013 max - Mar Sun>=22 0:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Asuncion -3:50:40 - LMT 1890 -3:50:40 - AMT 1931 Oct 10 # Asunción Mean Time -4:00 - -04 1972 Oct @@ -1664,13 +1664,13 @@ Rule Peru 1990 only - Apr 1 0:00 0 - # IATA is ambiguous for 1993/1995; go with Shanks & Pottenger. Rule Peru 1994 only - Jan 1 0:00 1:00 - Rule Peru 1994 only - Apr 1 0:00 0 - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Lima -5:08:12 - LMT 1890 -5:08:36 - LMT 1908 Jul 28 # Lima Mean Time? -5:00 Peru -05/-04 # South Georgia -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken -2:00 - -02 @@ -1678,7 +1678,7 @@ Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken # uninhabited; scientific personnel have wintered # Suriname -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Paramaribo -3:40:40 - LMT 1911 -3:40:52 - PMT 1935 # Paramaribo Mean Time -3:40:36 - PMT 1945 Oct # The capital moved? @@ -1686,7 +1686,7 @@ Zone America/Paramaribo -3:40:40 - LMT 1911 -3:00 - -03 # Trinidad and Tobago -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 -4:00 - AST @@ -1957,7 +1957,7 @@ Zone America/Montevideo -3:44:51 - LMT 1908 Jun 10 # ... published in the official Gazette [2016-04-18], here: # http://historico.tsj.gob.ve/gaceta_ext/abril/1842016/E-1842016-4551.pdf -# Zone NAME GMTOFF RULES FORMAT [UNTIL] +# Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Caracas -4:27:44 - LMT 1890 -4:27:40 - CMT 1912 Feb 12 # Caracas Mean Time? -4:30 - -0430 1965 Jan 1 0:00 diff --git a/systemv b/systemv index 24c8f64197a8..a8c037cd2c86 100644 --- a/systemv +++ b/systemv @@ -23,7 +23,7 @@ Rule SystemV 1975 only - Oct lastSun 2:00 0 S Rule SystemV 1976 max - Apr lastSun 2:00 1:00 D Rule SystemV 1976 max - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] +# Zone NAME STDOFF RULES/SAVE FORMAT [UNTIL] ## Zone SystemV/AST4ADT -4:00 SystemV A%sT ## Zone SystemV/EST5EDT -5:00 SystemV E%sT ## Zone SystemV/CST6CDT -6:00 SystemV C%sT diff --git a/theory.html b/theory.html index e37302234daf..e0b32335867d 100644 --- a/theory.html +++ b/theory.html @@ -88,7 +88,7 @@ href="https://en.wikipedia.org/wiki/POSIX">POSIX, an international standard for UNIX-like systems. As of this writing, the current edition of POSIX is: The Open +href="https://pubs.opengroup.org/onlinepubs/9699919799/"> The Open Group Base Specifications Issue 7, IEEE Std 1003.1-2017, 2018 Edition. Because the database's scope encompasses real-world changes to civil @@ -186,7 +186,7 @@ in decreasing order of importance: href="https://en.wikipedia.org/wiki/ASCII">ASCII letters, '.', '-' and '_'. Do not use digits, as that might create an ambiguity with POSIX + href="https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03">POSIX TZ strings. A file name component must not exceed 14 characters or start with '-'. @@ -301,7 +301,7 @@ in decreasing order of importance:

Guidelines have evolved with time, and names following old versions of -this guideline might not follow the current version. When guidelines +these guidelines might not follow the current version. When guidelines have changed, old names continue to be supported. Guideline changes have included the following:

@@ -330,7 +330,7 @@ and the file 'northamerica' defines the legacy names
  • -Older versions of this guideline said that +Older versions of these guidelines said that there should typically be at least one name for each ISO @@ -379,8 +379,8 @@ in decreasing order of importance: special meaning to the UNIX shell and cause commands like - 'set - `date`' + 'set + `date`' to have unexpected effects. Previous editions of this guideline required upper-case letters, but the Congressman who introduced @@ -955,7 +955,7 @@ an older zic.
  • In POSIX, there is no tamper-proof way for a process to learn the - system's best idea of local wall clock. + system's best idea of local (wall clock) time. This is important for applications that an administrator wants used only at certain times – without regard to whether the user has fiddled the @@ -1052,14 +1052,14 @@ an older zic.
  • A function tzsetwall has been added to arrange for the - system's best approximation to local wall clock time to be delivered + system's best approximation to local (wall clock) time to be delivered by subsequent calls to localtime. - Source code for portable applications that "must" run on local wall - clock time should call tzsetwall; + Source code for portable applications that "must" run on local + time should call tzsetwall; if such code is moved to "old" systems that do not provide tzsetwall, you will not be able to generate an executable program. - (These functions also arrange for local wall clock time to + (These functions also arrange for local time to be used if tzset is called – directly or indirectly – and there is no TZ environment variable; portable applications should not, however, rely on this @@ -1354,11 +1354,11 @@ Sources for time on other planets: Michael Allison and Robert Schmunk, "Technical Notes on Mars Solar Time as Adopted by the Mars24 Sunclock" - (2015-06-30). + (2018-12-13).
  • Jia-Rui Chong, - "Workdays + "Workdays Fit for a Martian", Los Angeles Times (2004-01-14), pp A1, A20–A21.
    • diff --git a/version b/version index 149d790c3d12..8d4a43baf40b 100644 --- a/version +++ b/version @@ -1 +1 @@ -2019a +2019b diff --git a/zishrink.awk b/zishrink.awk index 8876b68a095c..4e187ac5814b 100644 --- a/zishrink.awk +++ b/zishrink.awk @@ -20,7 +20,8 @@ function record_hash(n, name) # Return a shortened rule name representing NAME, # and record this relationship to the hash table. -function gen_rule_name(name, n) +function gen_rule_name(name, \ + n) { # Use a simple memonic: the first two letters. n = substr(name, 1, 2) @@ -29,7 +30,8 @@ function gen_rule_name(name, n) return n } -function prehash_rule_names(name) +function prehash_rule_names( \ + name) { # Rule names are not part of the tzdb API, so substitute shorter # ones. Shortening them consistently from one release to the next @@ -148,20 +150,21 @@ function prehash_rule_names(name) } } -# Process an input line and save it for later output. +# Process the input line LINE and save it for later output. -function process_input_line(line, field, end, i, n, startdef) +function process_input_line(line, \ + field, end, i, n, startdef, \ + linkline, ruleline, zoneline) { # Remove comments, normalize spaces, and append a space to each line. sub(/#.*/, "", line) line = line " " gsub(/[\t ]+/, " ", line) - # Abbreviate keywords. Do not abbreviate "Link" to just "L", - # as pre-2017c zic erroneously diagnoses "Li" as ambiguous. - sub(/^Link /, "Li ", line) - sub(/^Rule /, "R ", line) - sub(/^Zone /, "Z ", line) + # Abbreviate keywords and determine line type. + linkline = sub(/^Link /, "L ", line) + ruleline = sub(/^Rule /, "R ", line) + zoneline = sub(/^Zone /, "Z ", line) # SystemV rules are not needed. if (line ~ /^R SystemV /) return @@ -169,7 +172,7 @@ function process_input_line(line, field, end, i, n, startdef) # Replace FooAsia rules with the same rules without "Asia", as they # are duplicates. if (match(line, /[^ ]Asia /)) { - if (line ~ /^R /) return + if (ruleline) return line = substr(line, 1, RSTART) substr(line, RSTART + 5) } @@ -179,21 +182,19 @@ function process_input_line(line, field, end, i, n, startdef) while (match(line, /:0[^:]/)) line = substr(line, 1, RSTART - 1) substr(line, RSTART + 2) - # Abbreviate weekday names. Do not abbreviate "Sun" and "Sat", as - # pre-2017c zic erroneously diagnoses "Su" and "Sa" as ambiguous. + # Abbreviate weekday names. while (match(line, / (last)?(Mon|Wed|Fri)[ <>]/)) { end = RSTART + RLENGTH line = substr(line, 1, end - 4) substr(line, end - 1) } - while (match(line, / (last)?(Tue|Thu)[ <>]/)) { + while (match(line, / (last)?(Sun|Tue|Thu|Sat)[ <>]/)) { end = RSTART + RLENGTH line = substr(line, 1, end - 3) substr(line, end - 1) } - # Abbreviate "max", "only" and month names. - # Do not abbreviate "min", as pre-2017c zic erroneously diagnoses "mi" - # as ambiguous. + # Abbreviate "max", "min", "only" and month names. gsub(/ max /, " ma ", line) + gsub(/ min /, " mi ", line) gsub(/ only /, " o ", line) gsub(/ Jan /, " Ja ", line) gsub(/ Feb /, " F ", line) @@ -221,7 +222,7 @@ function process_input_line(line, field, end, i, n, startdef) n = split(line, field) # Abbreviate rule names. - i = field[1] == "Z" ? 4 : field[1] == "Li" ? 0 : 2 + i = zoneline ? 4 : linkline ? 0 : 2 if (i && field[i] ~ /^[^-+0-9]/) { if (!rule[field[i]]) rule[field[i]] = gen_rule_name(field[i]) @@ -231,11 +232,11 @@ function process_input_line(line, field, end, i, n, startdef) # If this zone supersedes an earlier one, delete the earlier one # from the saved output lines. startdef = "" - if (field[1] == "Z") + if (zoneline) zonename = startdef = field[2] - else if (field[1] == "Li") + else if (linkline) zonename = startdef = field[3] - else if (field[1] == "R") + else if (ruleline) zonename = "" if (startdef) { i = zonedef[startdef] @@ -254,7 +255,8 @@ function process_input_line(line, field, end, i, n, startdef) output_line[nout++] = line } -function output_saved_lines(i) +function output_saved_lines( \ + i) { for (i = 0; i < nout; i++) if (output_line[i]) diff --git a/zone.tab b/zone.tab index 27e1dee61efc..408fcb2051d7 100644 --- a/zone.tab +++ b/zone.tab @@ -332,7 +332,10 @@ RO +4426+02606 Europe/Bucharest RS +4450+02030 Europe/Belgrade RU +5443+02030 Europe/Kaliningrad MSK-01 - Kaliningrad RU +554521+0373704 Europe/Moscow MSK+00 - Moscow area -RU +4457+03406 Europe/Simferopol MSK+00 - Crimea +# The obsolescent zone.tab format cannot represent Europe/Simferopol well. +# Put it in RU section and list as UA. See "territorial claims" above. +# Programs should use zone1970.tab instead; see above. +UA +4457+03406 Europe/Simferopol MSK+00 - Crimea RU +5836+04939 Europe/Kirov MSK+00 - Kirov RU +4621+04803 Europe/Astrakhan MSK+01 - Astrakhan RU +4844+04425 Europe/Volgograd MSK+01 - Volgograd diff --git a/zone1970.tab b/zone1970.tab index 9a8e4244fa30..822ffa1f1af0 100644 --- a/zone1970.tab +++ b/zone1970.tab @@ -289,7 +289,8 @@ RO +4426+02606 Europe/Bucharest RS,BA,HR,ME,MK,SI +4450+02030 Europe/Belgrade RU +5443+02030 Europe/Kaliningrad MSK-01 - Kaliningrad RU +554521+0373704 Europe/Moscow MSK+00 - Moscow area -RU +4457+03406 Europe/Simferopol MSK+00 - Crimea +# Mention RU and UA alphabetically. See "territorial claims" above. +RU,UA +4457+03406 Europe/Simferopol MSK+00 - Crimea RU +5836+04939 Europe/Kirov MSK+00 - Kirov RU +4621+04803 Europe/Astrakhan MSK+01 - Astrakhan RU +4844+04425 Europe/Volgograd MSK+01 - Volgograd diff --git a/zoneinfo2tdf.pl b/zoneinfo2tdf.pl index c8c5591afee0..e07b00cae79f 100755 --- a/zoneinfo2tdf.pl +++ b/zoneinfo2tdf.pl @@ -28,7 +28,7 @@ while (<>) { $contZone = ''; if ($type eq 'zone') { - # Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] + # Zone NAME STDOFF RULES/SAVE FORMAT [UNTIL] my $nfields = @fields; $nfields >= 5 or warn "bad zone line"; if ($nfields > 6) { From 2eb2d45aab9f36faed7e87a9588d1c4067e3eb42 Mon Sep 17 00:00:00 2001 From: Philip Paeps Date: Thu, 12 Sep 2019 00:15:06 +0000 Subject: [PATCH 2/3] Import tzdata 2019c --- NEWS | 75 ++++++++++++++++++ asia | 23 ++++-- australasia | 42 ++++++---- backzone | 34 +++++--- europe | 186 ++++++++++++++++++++++++++++++------------- leap-seconds.list | 8 +- leapseconds | 41 +++++----- leapseconds.awk | 195 ++++++++++++++++++++++++++++++++++++---------- northamerica | 132 ++++++++++++++++++++++--------- southamerica | 11 ++- theory.html | 77 ++++++++++++++++-- version | 2 +- 12 files changed, 633 insertions(+), 193 deletions(-) diff --git a/NEWS b/NEWS index 8b05f8f13084..af0f06f7192d 100644 --- a/NEWS +++ b/NEWS @@ -1,5 +1,80 @@ News for the tz database +Release 2019c - 2019-09-11 08:59:48 -0700 + + Briefly: + Fiji observes DST from 2019-11-10 to 2020-01-12. + Norfolk Island starts observing Australian-style DST. + + Changes to future timestamps + + Fiji's next DST transitions will be 2019-11-10 and 2020-01-12 + instead of 2019-11-03 and 2020-01-19. (Thanks to Raymond Kumar.) + Adjust future guesses accordingly. + + Norfolk Island will observe Australian-style DST starting in + spring 2019. The first transition is on 2019-10-06. (Thanks to + Kyle Czech and Michael Deckers.) + + Changes to past timestamps + + Many corrections to time in Turkey from 1940 through 1985. + (Thanks to Oya Vulaş via Alois Treindl, and to Kıvanç Yazan.) + + The Norfolk Island 1975-03-02 transition was at 02:00 standard + time, not 02:00 DST. (Thanks to Michael Deckers.) + + South Korea observed DST from 1948 through 1951. Although this + info was supposed to appear in release 2014j, a typo inadvertently + suppressed the change. (Thanks to Alois Treindl.) + + Detroit observed DST in 1967 and 1968 following the US DST rules, + except that its 1967 DST began on June 14 at 00:01. (Thanks to + Alois Treindl for pointing out that the old data entries were + probably wrong.) + + Fix several errors in pre-1970 transitions in Perry County, IN. + (Thanks to Alois Triendl for pointing out the 1967/9 errors.) + + Edmonton did not observe DST in 1967 or 1969. In 1946 Vancouver + ended DST on 09-29 not 10-13, and Vienna ended DST on 10-07 not + 10-06. In 1945 Königsberg (now Kaliningrad) switched from +01/+02 + to +02/+03 on 04-10 not 01-01, and its +02/+03 is abbreviated + EET/EEST, not CET/CEST. (Thanks to Alois Triendl.) In 1946 + Königsberg switched to +03 on 04-07 not 01-01. + + In 1946 Louisville switched from CST to CDT on 04-28 at 00:01, not + 01-01 at 00:00. (Thanks to Alois Treindl and Michael Deckers.) + Also, it switched from CST to CDT on 1950-04-30, not 1947-04-27. + + The 1892-05-01 transition in Brussels was at 00:17:30, not at noon. + (Thanks to Michael Deckers.) + + Changes to past time zone abbreviations and DST flags + + Hong Kong Winter Time, observed from 1941-10-01 to 1941-12-25, + is now flagged as DST and is abbreviated HKWT not HKT. + + Changes to code + + leapseconds.awk now relies only on its input data, rather than + also relying on its comments. (Inspired by code from Dennis + Ferguson and Chris Woodbury.) + + The code now defends against CRLFs in leap-seconds.list. + (Thanks to Brian Inglis and Chris Woodbury.) + + Changes to documentation and commentary + + theory.html discusses leap seconds. (Thanks to Steve Summit.) + + Nashville's newspapers dueled about the time of day in the 1950s. + (Thanks to John Seigenthaler.) + + Liechtenstein observed Swiss DST in 1941/2. + (Thanks to Alois Treindl.) + + Release 2019b - 2019-07-01 00:09:53 -0700 Briefly: diff --git a/asia b/asia index 348e2b5df5ec..b29c896e5fde 100644 --- a/asia +++ b/asia @@ -8,7 +8,7 @@ # tz@iana.org for general use in the future). For more, please see # the file CONTRIBUTING in the tz distribution. -# From Paul Eggert (2018-06-19): +# From Paul Eggert (2019-07-11): # # Unless otherwise specified, the source for data through 1990 is: # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), @@ -47,13 +47,13 @@ # 7:00 WIB west Indonesia (Waktu Indonesia Barat) # 8:00 WITA central Indonesia (Waktu Indonesia Tengah) # 8:00 CST China -# 8:00 PST PDT* Philippine Standard Time +# 8:00 HKT HKST Hong Kong (HKWT* for Winter Time in late 1941) +# 8:00 PST PDT* Philippines # 8:30 KST KDT Korea when at +0830 # 9:00 WIT east Indonesia (Waktu Indonesia Timur) # 9:00 JST JDT Japan # 9:00 KST KDT Korea when at +09 -# 9:30 ACST Australian Central Standard Time -# *I invented the abbreviation PDT; see "Philippines" below. +# *I invented the abbreviations HKWT and PDT; see below. # Otherwise, these tables typically use numeric abbreviations like +03 # and +0330 for integer hour and minute UT offsets. Although earlier # editions invented alphabetic time zone abbreviations for every @@ -653,6 +653,15 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928 # * 1941-09-30, Hong Kong Daily Press, Winter Time Warning. # https://i.imgur.com/dge4kFJ.png +# From Paul Eggert (2019-07-11): +# "Hong Kong winter time" is considered to be daylight saving. +# "Hong Kong had adopted daylight saving on June 15 as a wartime measure, +# clocks moving forward one hour until October 1, when they would be put back +# by just half an hour for 'Hong Kong Winter time', so that daylight saving +# operated year round." -- Low Z. The longest day: when wartime Hong Kong +# introduced daylight saving. South China Morning Post. 2019-06-28. +# https://www.scmp.com/magazines/post-magazine/short-reads/article/3016281/longest-day-when-wartime-hong-kong-introduced + # From P Chan (2018-12-31): # * According to the Hong Kong Daylight-Saving Regulations, 1941, the # 1941 spring-forward transition was at 03:00. @@ -754,7 +763,7 @@ Rule HK 1979 only - Oct 21 3:30 0 - Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30 0:36:42 8:00 - HKT 1941 Jun 15 3:00 8:00 1:00 HKST 1941 Oct 1 4:00 - 8:30 - HKT 1941 Dec 25 + 8:00 0:30 HKWT 1941 Dec 25 9:00 - JST 1945 Nov 18 2:00 8:00 HK HK%sT @@ -2419,7 +2428,7 @@ Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1 8:30 - KST 1912 Jan 1 9:00 - JST 1945 Sep 8 - 9:00 - KST 1954 Mar 21 + 9:00 ROK K%sT 1954 Mar 21 8:30 ROK K%sT 1961 Aug 10 9:00 ROK K%sT Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1 @@ -3604,7 +3613,7 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 # and in South Vietnam in particular (after 1954): # To 07:00 on 1911-05-01. # To 08:00 on 1942-12-31 at 23:00. -# To 09:00 in 1945-03-14 at 23:00. +# To 09:00 on 1945-03-14 at 23:00. # To 07:00 on 1945-09-02 in Vietnam. # To 08:00 on 1947-04-01 in French-controlled Indochina. # To 07:00 on 1955-07-01 in South Vietnam. diff --git a/australasia b/australasia index 0544e587509a..ac44c0482170 100644 --- a/australasia +++ b/australasia @@ -367,13 +367,18 @@ Zone Indian/Cocos 6:27:40 - LMT 1900 # From Raymond Kumar (2018-07-13): # http://www.fijitimes.com/government-approves-2018-daylight-saving/ # ... The daylight saving period will end at 3am on Sunday January 13, 2019. -# -# From Paul Eggert (2018-07-15): -# For now, guess DST from 02:00 the first Sunday in November to 03:00 -# the first Sunday on or after January 13. January transitions reportedly + +# From Paul Eggert (2019-08-06): +# Today Raymond Kumar reported the Government of Fiji Gazette Supplement No. 27 +# (2019-08-02) said that Fiji observes DST "commencing at 2.00 am on +# Sunday, 10 November 2019 and ending at 3.00 am on Sunday, 12 January 2020." +# For now, guess DST from 02:00 the second Sunday in November to 03:00 +# the first Sunday on or after January 12. January transitions reportedly # depend on when school terms start. Although the guess is ad hoc, it matches -# transitions since late 2014 and seems more likely to match future -# practice than guessing no DST. +# transitions planned this year and seems more likely to match future practice +# than guessing no DST. +# From Michael Deckers (2019-08-06): +# https://www.laws.gov.fj/LawsAsMade/downloadfile/848 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Fiji 1998 1999 - Nov Sun>=1 2:00 1:00 - @@ -384,8 +389,9 @@ Rule Fiji 2010 2013 - Oct Sun>=21 2:00 1:00 - Rule Fiji 2011 only - Mar Sun>=1 3:00 0 - Rule Fiji 2012 2013 - Jan Sun>=18 3:00 0 - Rule Fiji 2014 only - Jan Sun>=18 2:00 0 - -Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 - -Rule Fiji 2015 max - Jan Sun>=13 3:00 0 - +Rule Fiji 2014 2018 - Nov Sun>=1 2:00 1:00 - +Rule Fiji 2015 max - Jan Sun>=12 3:00 0 - +Rule Fiji 2019 max - Nov Sun>=8 2:00 1:00 - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Fiji 11:55:44 - LMT 1915 Oct 26 # Suva 12:00 Fiji +12/+13 @@ -604,10 +610,11 @@ Zone Pacific/Niue -11:19:40 - LMT 1901 # Alofi # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston 11:12 - +1112 1951 - 11:30 - +1130 1974 Oct 27 02:00 - 11:30 1:00 +1230 1975 Mar 2 02:00 - 11:30 - +1130 2015 Oct 4 02:00 - 11:00 - +11 + 11:30 - +1130 1974 Oct 27 02:00s + 11:30 1:00 +1230 1975 Mar 2 02:00s + 11:30 - +1130 2015 Oct 4 02:00s + 11:00 - +11 2019 Jul + 11:00 AN +11/+12 # Palau (Belau) # Zone NAME STDOFF RULES FORMAT [UNTIL] @@ -1875,12 +1882,21 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # ... at 12.30 am (by legal time in New South Wales) on 4 October 2015. # http://www.norfolkisland.gov.nf/nia/MediaRelease/Media%20Release%20Norfolk%20Island%20Standard%20Time%20Change.pdf -# From Paul Eggert (2015-09-23): +# From Paul Eggert (2019-08-28): # Transitions before 2015 are from timeanddate.com, which consulted # the Norfolk Island Museum and the Australian Bureau of Meteorology's # Norfolk Island station, and found no record of Norfolk observing DST # other than in 1974/5. See: # https://www.timeanddate.com/time/australia/norfolk-island.html +# However, disagree with timeanddate about the 1975-03-02 transition; +# timeanddate has 02:00 but 02:00s corresponds to what the NSW law said +# (thanks to Michael Deckers). + +# Norfolk started observing Australian DST in spring 2019. +# From Kyle Czech (2019-08-13): +# https://www.legislation.gov.au/Details/F2018L01702 +# From Michael Deckers (2019-08-14): +# https://www.legislation.gov.au/Details/F2019C00010 # Palau # See commentary for Micronesia. diff --git a/backzone b/backzone index 2a54e6cee352..3ccadd139240 100644 --- a/backzone +++ b/backzone @@ -507,19 +507,35 @@ Zone Asia/Muscat 3:54:24 - LMT 1920 #Zone Asia/Panaji [not enough info to complete] # Cambodia -# From Paul Eggert (2014-10-11): -# See Asia/Ho_Chi_Minh for the source for most of this data. Also, guess -# (1) Cambodia reverted to UT +07 on 1945-09-02, when Vietnam did, and -# (2) they also reverted to +07 on 1953-11-09, the date of independence. -# These guesses are probably wrong but they're better than guessing no -# transitions there. + +# From an adoptive daughter of the late Cambodian ruler Prince Sihanouk, +# via Alois Treindl (2019-08-08): +# +# King Sihanouk said that, during the Japanese occupation, starting with +# what historians refer to as "le coup de force du 9 mars 1945", Cambodia, +# like the entire French Indochina, used Tokyo time zone. After Japan +# surrendered, 2 September 1945, Cambodia fell under French rule again and +# adopted Hanoi time zone again. +# +# However, on 7 January 1946, Sihanouk and Tioulong managed to obtain a +# status of "internal autonomy" from the government of Charles de Gaulle. +# Although many fields remained under the administration of the French +# (customs, taxes, justice, defence, foreign affairs, etc.), the Cambodian +# administration was responsible for religious matters and traditional +# celebrations, which included our calendar and time. The time zone was GMT +# + 7 and _no_ DST was applied. +# +# After Sihanouk and Tioulong achieved full independence, on 9 November 1953, +# GMT + 7 was maintained. + +# From Paul Eggert (2019-08-26): +# See Asia/Ho_Chi_Minh for the source for most of rest of this data. + Zone Asia/Phnom_Penh 6:59:40 - LMT 1906 Jul 1 7:06:30 - PLMT 1911 May 1 7:00 - +07 1942 Dec 31 23:00 8:00 - +08 1945 Mar 14 23:00 9:00 - +09 1945 Sep 2 - 7:00 - +07 1947 Apr 1 - 8:00 - +08 1953 Nov 9 7:00 - +07 # Israel @@ -646,7 +662,7 @@ Zone Europe/Tiraspol 1:58:32 - LMT 1880 # Liechtenstein Zone Europe/Vaduz 0:38:04 - LMT 1894 Jun - 1:00 - CET 1981 + 1:00 Swiss CE%sT 1981 1:00 EU CE%sT # Croatia diff --git a/europe b/europe index 5dc03976dbf5..361b396c026d 100644 --- a/europe +++ b/europe @@ -821,11 +821,16 @@ Zone Europe/Andorra 0:06:04 - LMT 1901 # Shanks & Pottenger give 02:00, the BEV 00:00. Go with the BEV, # and guess 02:00 for 1945-04-12. +# From Alois Triendl (2019-07-22): +# In 1946 the end of DST was on Monday, 7 October 1946, at 3:00 am. +# Shanks had this right. Source: Die Weltpresse, 5. Oktober 1946, page 5. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Austria 1920 only - Apr 5 2:00s 1:00 S Rule Austria 1920 only - Sep 13 2:00s 0 - Rule Austria 1946 only - Apr 14 2:00s 1:00 S -Rule Austria 1946 1948 - Oct Sun>=1 2:00s 0 - +Rule Austria 1946 only - Oct 7 2:00s 0 - +Rule Austria 1947 1948 - Oct Sun>=1 2:00s 0 - Rule Austria 1947 only - Apr 6 2:00s 1:00 S Rule Austria 1948 only - Apr 18 2:00s 1:00 S Rule Austria 1980 only - Apr 6 0:00 1:00 S @@ -875,15 +880,35 @@ Zone Europe/Minsk 1:50:16 - LMT 1880 # Belgium # -# From Paul Eggert (1997-07-02): +# From Michael Deckers (2019-08-25): +# The exposition in the web page +# https://www.bestor.be/wiki/index.php/Voyager_dans_le_temps._L%E2%80%99introduction_de_la_norme_de_Greenwich_en_Belgique +# gives several contemporary sources from which one can conclude that +# the switch in Europe/Brussels on 1892-05-01 was from 00:17:30 to 00:00:00. +# +# From Paul Eggert (2019-08-28): +# This quote helps explain the late-1914 situation: +# In early November 1914, the Germans imposed the time zone used in central +# Europe and forced the inhabitants to set their watches and public clocks +# sixty minutes ahead. Many were reluctant to accept "German time" and +# continued to use "Belgian time" among themselves. Reflecting the spirit of +# resistance that arose in the population, a song made fun of this change.... +# The song ended: +# Putting your clock forward +# Will but hasten the happy hour +# When we kick out the Boches! +# See: Pluvinage G. Brussels on German time. Cahiers Bruxellois - +# Brusselse Cahiers. 2014;XLVI(1E):15-38. +# https://www.cairn.info/revue-cahiers-bruxellois-2014-1E-page-15.htm +# +# Entries from 1914 through 1917 are taken from "De tijd in België" +# . # Entries from 1918 through 1991 are taken from: # Annuaire de L'Observatoire Royal de Belgique, # Avenue Circulaire, 3, B-1180 BRUXELLES, CLVIIe année, 1991 # (Imprimerie HAYEZ, s.p.r.l., Rue Fin, 4, 1080 BRUXELLES, MCMXC), # pp 8-9. -# LMT before 1892 was 0:17:30, according to the official journal of Belgium: -# Moniteur Belge, Samedi 30 Avril 1892, N.121. -# Thanks to Pascal Delmoitie for these references. +# Thanks to Pascal Delmoitie for the 1918/1991 references. # The 1918 rules are listed for completeness; they apply to unoccupied Belgium. # Assume Brussels switched to WET in 1918 when the armistice took effect. # @@ -928,7 +953,7 @@ Rule Belgium 1946 only - May 19 2:00s 1:00 S Rule Belgium 1946 only - Oct 7 2:00s 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Brussels 0:17:30 - LMT 1880 - 0:17:30 - BMT 1892 May 1 12:00 # Brussels MT + 0:17:30 - BMT 1892 May 1 00:17:30 0:00 - WET 1914 Nov 8 1:00 - CET 1916 May 1 0:00 1:00 C-Eur CE%sT 1918 Nov 11 11:00u @@ -1627,6 +1652,13 @@ Zone Atlantic/Reykjavik -1:28 - LMT 1908 # advanced to sixty minutes later starting at hour two on 1944-04-02; ... # Starting at hour three on the date 1944-09-17 standard time will be resumed. # +# From Alois Triendl (2019-07-02): +# I spent 6 Euros to buy two archive copies of Il Messaggero, a Roman paper, +# for 1 and 2 April 1944. The edition of 2 April has this note: "Tonight at 2 +# am, put forward the clock by one hour. Remember that in the night between +# today and Monday the 'ora legale' will come in force again." That makes it +# clear that in Rome the change was on Monday, 3 April 1944 at 2 am. +# # From Paul Eggert (2016-10-27): # Go with INRiM for DST rules, except as corrected by Inglis for 1944 # for the Kingdom of Italy. This is consistent with Renzo Baldini. @@ -1774,15 +1806,10 @@ Zone Europe/Riga 1:36:34 - LMT 1880 # From Paul Eggert (2013-09-09): # Shanks & Pottenger say Vaduz is like Zurich. -# From Alois Treindl (2013-09-18): -# http://www.eliechtensteinensia.li/LIJ/1978/1938-1978/1941.pdf -# ... confirms on p. 6 that Liechtenstein followed Switzerland in 1941 and 1942. -# I ... translate only the last two paragraphs: -# ... during second world war, in the years 1941 and 1942, Liechtenstein -# introduced daylight saving time, adapting to Switzerland. From 1943 on -# central European time was in force throughout the year. -# From a report of the duke's government to the high council, -# regarding the introduction of a time law, of 31 May 1977. +# From Alois Treindl (2019-07-04): +# I was able to access the online archive of the Vaduz paper Vaterland ... +# I could confirm from the paper that Liechtenstein did in fact follow +# the same DST in 1941 and 1942 as Switzerland did. Link Europe/Zurich Europe/Vaduz @@ -2490,6 +2517,12 @@ Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct # Europe/Kaliningrad covers... # 39 RU-KGD Kaliningrad Oblast +# From Paul Eggert (2019-07-25): +# Although Shanks lists 1945-01-01 as the date for transition from +# +01/+02 to +02/+03, more likely this is a placeholder. Guess that +# the transition occurred at 1945-04-10 00:00, which is about when +# Königsberg surrendered to Soviet troops. (Thanks to Alois Triendl.) + # From Paul Eggert (2016-03-18): # The 1989 transition is from USSR act No. 227 (1989-03-14). @@ -2506,8 +2539,8 @@ Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct # Moscow on 1991-11-03, switched to Moscow-1 on 1992-01-19. Zone Europe/Kaliningrad 1:22:00 - LMT 1893 Apr - 1:00 C-Eur CE%sT 1945 - 2:00 Poland CE%sT 1946 + 1:00 C-Eur CE%sT 1945 Apr 10 + 2:00 Poland EE%sT 1946 Apr 7 3:00 Russia MSK/MSD 1989 Mar 26 2:00s 2:00 Russia EE%sT 2011 Mar 27 2:00s 3:00 - +03 2014 Oct 26 2:00s @@ -3650,20 +3683,75 @@ Zone Europe/Zurich 0:34:08 - LMT 1853 Jul 16 # See above comment. # Turkey +# From Alois Treindl (2019-08-12): +# http://www.astrolojidergisi.com/yazsaati.htm has researched the time zone +# history of Turkey, based on newspaper archives and official documents. +# From Paul Eggert (2019-08-28): +# That source (Oya Vulaş, "Türkiye'de Yaz Saati Uygulamaları") +# is used for 1940/1972, where it seems more reliable than our other +# sources. + +# From Kıvanç Yazan (2019-08-12): +# http://www.resmigazete.gov.tr/arsiv/14539.pdf#page=24 +# 1973-06-03 01:00 -> 02:00, 1973-11-04 02:00 -> 01:00 +# +# http://www.resmigazete.gov.tr/arsiv/14829.pdf#page=1 +# 1974-03-31 02:00 -> 03:00, 1974-11-03 02:00 -> 01:00 +# +# http://www.resmigazete.gov.tr/arsiv/15161.pdf#page=1 +# 1975-03-22 02:00 -> 03:00, 1975-11-02 02:00 -> 01:00 +# +# http://www.resmigazete.gov.tr/arsiv/15535_1.pdf#page=1 +# 1976-03-21 02:00 -> 03:00, 1976-10-31 02:00 -> 01:00 +# +# http://www.resmigazete.gov.tr/arsiv/15778.pdf#page=5 +# 1977-04-03 02:00 -> 03:00, 1977-10-16 02:00 -> 01:00, +# 1978-04-02 02:00 -> 03:00 (not applied, see below) +# 1978-10-15 02:00 -> 01:00 (not applied, see below) +# 1979-04-01 02:00 -> 03:00 (not applied, see below) +# 1979-10-14 02:00 -> 01:00 (not applied, see below) +# +# http://www.resmigazete.gov.tr/arsiv/16245.pdf#page=17 +# This cancels the previous decision, and repeats it only for 1978. +# 1978-04-02 02:00 -> 03:00, 1978-10-15 02:00 -> 01:00 +# (not applied due to standard TZ change below) +# +# http://www.resmigazete.gov.tr/arsiv/16331.pdf#page=3 +# This decision changes the default longitude for Turkish time zone from 30 +# degrees East to 45 degrees East. This means a standard TZ change, from +2 +# to +3. This is published & applied on 1978-06-29. At that time, Turkey was +# already on summer time (already on 45E). Hence, this new law just meant an +# "continuous summer time". Note that this was reversed in a few years. +# +# http://www.resmigazete.gov.tr/arsiv/18119_1.pdf#page=1 +# 1983-07-31 02:00 -> 03:00 (note that this jumps TZ to +4) +# 1983-10-02 02:00 -> 01:00 (back to +3) +# +# http://www.resmigazete.gov.tr/arsiv/18561.pdf (page 1 and 34) +# At this time, Turkey is still on +3 with no spring-forward on early +# 1984. This decision is published on 10/31/1984. Page 1 declares +# the decision of reverting the "default longitude change". So the +# standard time should go back to +3 (30E). And page 34 explains when +# that will happen: 1984-11-01 02:00 -> 01:00. You can think of this +# as "end of continuous summer time, change of standard time zone". +# +# http://www.resmigazete.gov.tr/arsiv/18713.pdf#page=1 +# 1985-04-20 01:00 -> 02:00, 1985-09-28 02:00 -> 01:00 + # From Kıvanç Yazan (2016-09-25): # 1) For 1986-2006, DST started at 01:00 local and ended at 02:00 local, with # no exceptions. # 2) 1994's lastSun was overridden with Mar 20 ... # Here are official papers: -# http://www.resmigazete.gov.tr/arsiv/19032.pdf - page 2 for 1986 -# http://www.resmigazete.gov.tr/arsiv/19400.pdf - page 4 for 1987 -# http://www.resmigazete.gov.tr/arsiv/19752.pdf - page 15 for 1988 -# http://www.resmigazete.gov.tr/arsiv/20102.pdf - page 6 for 1989 -# http://www.resmigazete.gov.tr/arsiv/20464.pdf - page 1 for 1990 - 1992 -# http://www.resmigazete.gov.tr/arsiv/21531.pdf - page 15 for 1993 - 1995 -# http://www.resmigazete.gov.tr/arsiv/21879.pdf - page 1 for overriding 1994 -# http://www.resmigazete.gov.tr/arsiv/22588.pdf - page 1 for 1996, 1997 -# http://www.resmigazete.gov.tr/arsiv/23286.pdf - page 10 for 1998 - 2000 +# http://www.resmigazete.gov.tr/arsiv/19032.pdf#page=2 for 1986 +# http://www.resmigazete.gov.tr/arsiv/19400.pdf#page=4 for 1987 +# http://www.resmigazete.gov.tr/arsiv/19752.pdf#page=15 for 1988 +# http://www.resmigazete.gov.tr/arsiv/20102.pdf#page=6 for 1989 +# http://www.resmigazete.gov.tr/arsiv/20464.pdf#page=1 for 1990 - 1992 +# http://www.resmigazete.gov.tr/arsiv/21531.pdf#page=15 for 1993 - 1995 +# http://www.resmigazete.gov.tr/arsiv/21879.pdf#page=1 for overriding 1994 +# http://www.resmigazete.gov.tr/arsiv/22588.pdf#page=1 for 1996, 1997 +# http://www.resmigazete.gov.tr/arsiv/23286.pdf#page=10 for 1998 - 2000 # http://www.resmigazete.gov.tr/eskiler/2001/03/20010324.htm#2 - for 2001 # http://www.resmigazete.gov.tr/eskiler/2002/03/20020316.htm#2 - for 2002-2006 # From Paul Eggert (2016-09-25): @@ -3747,46 +3835,36 @@ Rule Turkey 1922 only - Oct 8 0:00 0 - Rule Turkey 1924 only - May 13 0:00 1:00 S Rule Turkey 1924 1925 - Oct 1 0:00 0 - Rule Turkey 1925 only - May 1 0:00 1:00 S -Rule Turkey 1940 only - Jun 30 0:00 1:00 S -Rule Turkey 1940 only - Oct 5 0:00 0 - +Rule Turkey 1940 only - Jul 1 0:00 1:00 S +Rule Turkey 1940 only - Oct 6 0:00 0 - Rule Turkey 1940 only - Dec 1 0:00 1:00 S Rule Turkey 1941 only - Sep 21 0:00 0 - Rule Turkey 1942 only - Apr 1 0:00 1:00 S -# Whitman omits the next two transition and gives 1945 Oct 1; -# go with Shanks & Pottenger. -Rule Turkey 1942 only - Nov 1 0:00 0 - -Rule Turkey 1945 only - Apr 2 0:00 1:00 S Rule Turkey 1945 only - Oct 8 0:00 0 - Rule Turkey 1946 only - Jun 1 0:00 1:00 S Rule Turkey 1946 only - Oct 1 0:00 0 - Rule Turkey 1947 1948 - Apr Sun>=16 0:00 1:00 S -Rule Turkey 1947 1950 - Oct Sun>=2 0:00 0 - +Rule Turkey 1947 1951 - Oct Sun>=2 0:00 0 - Rule Turkey 1949 only - Apr 10 0:00 1:00 S -Rule Turkey 1950 only - Apr 19 0:00 1:00 S +Rule Turkey 1950 only - Apr 16 0:00 1:00 S Rule Turkey 1951 only - Apr 22 0:00 1:00 S -Rule Turkey 1951 only - Oct 8 0:00 0 - +# DST for 15 months; unusual but we'll let it pass. Rule Turkey 1962 only - Jul 15 0:00 1:00 S -Rule Turkey 1962 only - Oct 8 0:00 0 - +Rule Turkey 1963 only - Oct 30 0:00 0 - Rule Turkey 1964 only - May 15 0:00 1:00 S Rule Turkey 1964 only - Oct 1 0:00 0 - -Rule Turkey 1970 1972 - May Sun>=2 0:00 1:00 S -Rule Turkey 1970 1972 - Oct Sun>=2 0:00 0 - Rule Turkey 1973 only - Jun 3 1:00 1:00 S -Rule Turkey 1973 only - Nov 4 3:00 0 - +Rule Turkey 1973 1976 - Oct Sun>=31 2:00 0 - Rule Turkey 1974 only - Mar 31 2:00 1:00 S -Rule Turkey 1974 only - Nov 3 5:00 0 - -Rule Turkey 1975 only - Mar 30 0:00 1:00 S -Rule Turkey 1975 1976 - Oct lastSun 0:00 0 - -Rule Turkey 1976 only - Jun 1 0:00 1:00 S -Rule Turkey 1977 1978 - Apr Sun>=1 0:00 1:00 S -Rule Turkey 1977 only - Oct 16 0:00 0 - -Rule Turkey 1979 1980 - Apr Sun>=1 3:00 1:00 S -Rule Turkey 1979 1982 - Oct Mon>=11 0:00 0 - -Rule Turkey 1981 1982 - Mar lastSun 3:00 1:00 S -Rule Turkey 1983 only - Jul 31 0:00 1:00 S -Rule Turkey 1983 only - Oct 2 0:00 0 - -Rule Turkey 1985 only - Apr 20 0:00 1:00 S -Rule Turkey 1985 only - Sep 28 0:00 0 - +Rule Turkey 1975 only - Mar 22 2:00 1:00 S +Rule Turkey 1976 only - Mar 21 2:00 1:00 S +Rule Turkey 1977 1978 - Apr Sun>=1 2:00 1:00 S +Rule Turkey 1977 1978 - Oct Sun>=15 2:00 0 - +Rule Turkey 1978 only - Jun 29 0:00 0 - +Rule Turkey 1983 only - Jul 31 2:00 1:00 S +Rule Turkey 1983 only - Oct 2 2:00 0 - +Rule Turkey 1985 only - Apr 20 1:00s 1:00 S +Rule Turkey 1985 only - Sep 28 1:00s 0 - Rule Turkey 1986 1993 - Mar lastSun 1:00s 1:00 S Rule Turkey 1986 1995 - Sep lastSun 1:00s 0 - Rule Turkey 1994 only - Mar 20 1:00s 1:00 S @@ -3795,8 +3873,8 @@ Rule Turkey 1996 2006 - Oct lastSun 1:00s 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Istanbul 1:55:52 - LMT 1880 1:56:56 - IMT 1910 Oct # Istanbul Mean Time? - 2:00 Turkey EE%sT 1978 Oct 15 - 3:00 Turkey +03/+04 1985 Apr 20 + 2:00 Turkey EE%sT 1978 Jun 29 + 3:00 Turkey +03/+04 1984 Nov 1 2:00 2:00 Turkey EE%sT 2007 2:00 EU EE%sT 2011 Mar 27 1:00u 2:00 - EET 2011 Mar 28 1:00u diff --git a/leap-seconds.list b/leap-seconds.list index fd3d192ea9ff..a1bc5a782a83 100644 --- a/leap-seconds.list +++ b/leap-seconds.list @@ -204,10 +204,10 @@ # current -- the update time stamp, the data and the name of the file # will not change. # -# Updated through IERS Bulletin C57 -# File expires on: 28 December 2019 +# Updated through IERS Bulletin C58 +# File expires on: 28 June 2020 # -#@ 3786480000 +#@ 3802291200 # 2272060800 10 # 1 Jan 1972 2287785600 11 # 1 Jul 1972 @@ -252,4 +252,4 @@ # the hash line is also ignored in the # computation. # -#h 83c68138 d3650221 07dbbbcd 11fcc859 ced1106a +#h f28827d2 f263b6c3 ec0f19eb a3e0dbf0 97f3fa30 diff --git a/leapseconds b/leapseconds index 886ae273e159..7808df8f894f 100644 --- a/leapseconds +++ b/leapseconds @@ -3,36 +3,39 @@ # This file is in the public domain. # This file is generated automatically from the data in the public-domain -# leap-seconds.list file, which can be copied from +# NIST format leap-seconds.list file, which can be copied from # -# or -# or . +# or . # For more about leap-seconds.list, please see # The NTP Timescale and Leap Seconds # . -# The International Earth Rotation and Reference Systems Service +# The rules for leap seconds are specified in Annex 1 (Time scales) of: +# Standard-frequency and time-signal emissions. +# International Telecommunication Union - Radiocommunication Sector +# (ITU-R) Recommendation TF.460-6 (02/2002) +# . +# The International Earth Rotation and Reference Systems Service (IERS) # periodically uses leap seconds to keep UTC to within 0.9 s of UT1 -# (which measures the true angular orientation of the earth in space) +# (a proxy for Earth's angle in space as measured by astronomers) # and publishes leap second data in a copyrighted file # . # See: Levine J. Coordinated Universal Time and the leap second. # URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995 # . -# There were no leap seconds before 1972, because the official mechanism -# accounting for the discrepancy between atomic time and the earth's rotation -# did not exist. The first ("1 Jan 1972") data line in leap-seconds.list +# There were no leap seconds before 1972, as no official mechanism +# accounted for the discrepancy between atomic time (TAI) and the earth's +# rotation. The first ("1 Jan 1972") data line in leap-seconds.list # does not denote a leap second; it denotes the start of the current definition # of UTC. -# The correction (+ or -) is made at the given time, so lines -# will typically look like: -# Leap YEAR MON DAY 23:59:60 + R/S -# or -# Leap YEAR MON DAY 23:59:59 - R/S - -# If the leap second is Rolling (R) the given time is local time (unused here). +# All leap-seconds are Stationary (S) at the given UTC time. +# The correction (+ or -) is made at the given time, so in the unlikely +# event of a negative leap second, a line would look like this: +# Leap YEAR MON DAY 23:59:59 - S +# Typical lines look like this: +# Leap YEAR MON DAY 23:59:60 + S Leap 1972 Jun 30 23:59:60 + S Leap 1972 Dec 31 23:59:60 + S Leap 1973 Dec 31 23:59:60 + S @@ -62,8 +65,8 @@ Leap 2015 Jun 30 23:59:60 + S Leap 2016 Dec 31 23:59:60 + S # POSIX timestamps for the data in this file: -#updated 1467936000 -#expires 1577491200 +#updated 1467936000 (2016-07-08 00:00:00 UTC) +#expires 1593302400 (2020-06-28 00:00:00 UTC) -# Updated through IERS Bulletin C57 -# File expires on: 28 December 2019 +# Updated through IERS Bulletin C58 +# File expires on: 28 June 2020 diff --git a/leapseconds.awk b/leapseconds.awk index 242e9d64098f..1fe50120afda 100644 --- a/leapseconds.awk +++ b/leapseconds.awk @@ -1,43 +1,59 @@ -# Generate the 'leapseconds' file from 'leap-seconds.list'. +# Generate zic format 'leapseconds' from NIST format 'leap-seconds.list'. # This file is in the public domain. +# This program uses awk arithmetic. POSIX requires awk to support +# exact integer arithmetic only through 10**10, which means for NTP +# timestamps this program works only to the year 2216, which is the +# year 1900 plus 10**10 seconds. However, in practice +# POSIX-conforming awk implementations invariably use IEEE-754 double +# and so support exact integers through 2**53. By the year 2216, +# POSIX will almost surely require at least 2**53 for awk, so for NTP +# timestamps this program should be good until the year 285,428,681 +# (the year 1900 plus 2**53 seconds). By then leap seconds will be +# long obsolete, as the Earth will likely slow down so much that +# there will be more than 25 hours per day and so some other scheme +# will be needed. + BEGIN { print "# Allowance for leap seconds added to each time zone file." print "" print "# This file is in the public domain." print "" print "# This file is generated automatically from the data in the public-domain" - print "# leap-seconds.list file, which can be copied from" + print "# NIST format leap-seconds.list file, which can be copied from" print "# " - print "# or " - print "# or ." + print "# or ." print "# For more about leap-seconds.list, please see" print "# The NTP Timescale and Leap Seconds" print "# ." print "" - print "# The International Earth Rotation and Reference Systems Service" + print "# The rules for leap seconds are specified in Annex 1 (Time scales) of:" + print "# Standard-frequency and time-signal emissions." + print "# International Telecommunication Union - Radiocommunication Sector" + print "# (ITU-R) Recommendation TF.460-6 (02/2002)" + print "# ." + print "# The International Earth Rotation and Reference Systems Service (IERS)" print "# periodically uses leap seconds to keep UTC to within 0.9 s of UT1" - print "# (which measures the true angular orientation of the earth in space)" + print "# (a proxy for Earth's angle in space as measured by astronomers)" print "# and publishes leap second data in a copyrighted file" print "# ." print "# See: Levine J. Coordinated Universal Time and the leap second." print "# URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995" print "# ." print "" - print "# There were no leap seconds before 1972, because the official mechanism" - print "# accounting for the discrepancy between atomic time and the earth's rotation" - print "# did not exist. The first (\"1 Jan 1972\") data line in leap-seconds.list" + print "# There were no leap seconds before 1972, as no official mechanism" + print "# accounted for the discrepancy between atomic time (TAI) and the earth's" + print "# rotation. The first (\"1 Jan 1972\") data line in leap-seconds.list" print "# does not denote a leap second; it denotes the start of the current definition" - print"# of UTC." + print "# of UTC." print "" - print "# The correction (+ or -) is made at the given time, so lines" - print "# will typically look like:" - print "# Leap YEAR MON DAY 23:59:60 + R/S" - print "# or" - print "# Leap YEAR MON DAY 23:59:59 - R/S" - print "" - print "# If the leap second is Rolling (R) the given time is local time (unused here)." + print "# All leap-seconds are Stationary (S) at the given UTC time." + print "# The correction (+ or -) is made at the given time, so in the unlikely" + print "# event of a negative leap second, a line would look like this:" + print "# Leap YEAR MON DAY 23:59:59 - S" + print "# Typical lines look like this:" + print "# Leap YEAR MON DAY 23:59:60 + S" monthabbr[ 1] = "Jan" monthabbr[ 2] = "Feb" @@ -51,45 +67,34 @@ BEGIN { monthabbr[10] = "Oct" monthabbr[11] = "Nov" monthabbr[12] = "Dec" - for (i in monthabbr) { - monthnum[monthabbr[i]] = i - monthlen[i] = 31 - } - monthlen[2] = 28 - monthlen[4] = monthlen[6] = monthlen[9] = monthlen[11] = 30 + + # Strip trailing CR, in case the input has CRLF form a la NIST. + RS = "\r?\n" + + sstamp_init() } -/^#\tUpdated through/ || /^#\tFile expires on:/ { +/^#[ \t]*[Uu]pdated through/ || /^#[ \t]*[Ff]ile expires on/ { last_lines = last_lines $0 "\n" } /^#[$][ \t]/ { updated = $2 } /^#[@][ \t]/ { expires = $2 } -/^#/ { next } +/^[ \t]*#/ { next } { NTP_timestamp = $1 TAI_minus_UTC = $2 - hash_mark = $3 - one = $4 - month = $5 - year = $6 if (old_TAI_minus_UTC) { if (old_TAI_minus_UTC < TAI_minus_UTC) { sign = "23:59:60\t+" } else { sign = "23:59:59\t-" } - m = monthnum[month] - 1 - if (m == 0) { - year--; - m = 12 - } - month = monthabbr[m] - day = monthlen[m] - day += m == 2 && year % 4 == 0 && (year % 100 != 0 || year % 400 == 0) - printf "Leap\t%s\t%s\t%s\t%s\tS\n", year, month, day, sign + sstamp_to_ymdhMs(NTP_timestamp - 1, ss_NTP) + printf "Leap\t%d\t%s\t%d\t%s\tS\n", \ + ss_year, monthabbr[ss_month], ss_mday, sign } old_TAI_minus_UTC = TAI_minus_UTC } @@ -102,7 +107,117 @@ END { print "" print "# POSIX timestamps for the data in this file:" - printf "#updated %s\n", updated - epoch_minus_NTP - printf "#expires %s\n", expires - epoch_minus_NTP + sstamp_to_ymdhMs(updated, ss_NTP) + printf "#updated %d (%.4d-%.2d-%.2d %.2d:%.2d:%.2d UTC)\n", \ + updated - epoch_minus_NTP, \ + ss_year, ss_month, ss_mday, ss_hour, ss_min, ss_sec + sstamp_to_ymdhMs(expires, ss_NTP) + printf "#expires %d (%.4d-%.2d-%.2d %.2d:%.2d:%.2d UTC)\n", \ + expires - epoch_minus_NTP, \ + ss_year, ss_month, ss_mday, ss_hour, ss_min, ss_sec + printf "\n%s", last_lines } + +# sstamp_to_ymdhMs - convert seconds timestamp to date and time +# +# Call as: +# +# sstamp_to_ymdhMs(sstamp, epoch_days) +# +# where: +# +# sstamp - is the seconds timestamp. +# epoch_days - is the timestamp epoch in Gregorian days since 1600-03-01. +# ss_NTP is appropriate for an NTP sstamp. +# +# Both arguments should be nonnegative integers. +# On return, the following variables are set based on sstamp: +# +# ss_year - Gregorian calendar year +# ss_month - month of the year (1-January to 12-December) +# ss_mday - day of the month (1-31) +# ss_hour - hour (0-23) +# ss_min - minute (0-59) +# ss_sec - second (0-59) +# ss_wday - day of week (0-Sunday to 6-Saturday) +# +# The function sstamp_init should be called prior to using sstamp_to_ymdhMs. + +function sstamp_init() +{ + # Days in month N, where March is month 0 and January month 10. + ss_mon_days[ 0] = 31 + ss_mon_days[ 1] = 30 + ss_mon_days[ 2] = 31 + ss_mon_days[ 3] = 30 + ss_mon_days[ 4] = 31 + ss_mon_days[ 5] = 31 + ss_mon_days[ 6] = 30 + ss_mon_days[ 7] = 31 + ss_mon_days[ 8] = 30 + ss_mon_days[ 9] = 31 + ss_mon_days[10] = 31 + + # Counts of days in a Gregorian year, quad-year, century, and quad-century. + ss_year_days = 365 + ss_quadyear_days = ss_year_days * 4 + 1 + ss_century_days = ss_quadyear_days * 25 - 1 + ss_quadcentury_days = ss_century_days * 4 + 1 + + # Standard day epochs, suitable for epoch_days. + # ss_MJD = 94493 + # ss_POSIX = 135080 + ss_NTP = 109513 +} + +function sstamp_to_ymdhMs(sstamp, epoch_days, \ + quadcentury, century, quadyear, year, month, day) +{ + ss_hour = int(sstamp / 3600) % 24 + ss_min = int(sstamp / 60) % 60 + ss_sec = sstamp % 60 + + # Start with a count of days since 1600-03-01 Gregorian. + day = epoch_days + int(sstamp / (24 * 60 * 60)) + + # Compute a year-month-day date with days of the month numbered + # 0-30, months (March-February) numbered 0-11, and years that start + # start March 1 and end after the last day of February. A quad-year + # starts on March 1 of a year evenly divisible by 4 and ends after + # the last day of February 4 years later. A century starts on and + # ends before March 1 in years evenly divisible by 100. + # A quad-century starts on and ends before March 1 in years divisible + # by 400. While the number of days in a quad-century is a constant, + # the number of days in each other time period can vary by 1. + # Any variation is in the last day of the time period (there might + # or might not be a February 29) where it is easy to deal with. + + quadcentury = int(day / ss_quadcentury_days) + day -= quadcentury * ss_quadcentury_days + ss_wday = (day + 3) % 7 + century = int(day / ss_century_days) + century -= century == 4 + day -= century * ss_century_days + quadyear = int(day / ss_quadyear_days) + day -= quadyear * ss_quadyear_days + year = int(day / ss_year_days) + year -= year == 4 + day -= year * ss_year_days + for (month = 0; month < 11; month++) { + if (day < ss_mon_days[month]) + break + day -= ss_mon_days[month] + } + + # Convert the date to a conventional day of month (1-31), + # month (1-12, January-December) and Gregorian year. + ss_mday = day + 1 + if (month <= 9) { + ss_month = month + 3 + } else { + ss_month = month - 9 + year++ + } + ss_year = 1600 + quadcentury * 400 + century * 100 + quadyear * 4 + year +} diff --git a/northamerica b/northamerica index 9e3577bca697..8771d96e64e8 100644 --- a/northamerica +++ b/northamerica @@ -406,6 +406,31 @@ Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58 # From Paul Eggert (2015-12-25): # Assume this practice predates 1970, so Fort Pierre can use America/Chicago. +# From Paul Eggert (2015-04-06): +# In 1950s Nashville a public clock had dueling faces, one for conservatives +# and the other for liberals; the two sides didn't agree about the time of day. +# I haven't found a photo of this clock, nor have I tracked down the TIME +# magazine report cited below, but here's the story as told by the late +# American journalist John Seigenthaler, who was there: +# +# "The two [newspaper] owners held strongly contrasting political and +# ideological views. Evans was a New South liberal, Stahlman an Old South +# conservative, and their two papers frequently clashed editorially, often on +# the same day.... In the 1950s as the state legislature was grappling with +# the question of whether to approve daylight saving time for the entire state, +# TIME magazine reported: +# +# "'The Nashville Banner and The Nashville Tennessean rarely agree on anything +# but the time of day - and last week they couldn't agree on that.' +# +# "It was all too true. The clock on the front of the building had two faces - +# The Tennessean side of the building facing west, the other, east. When it +# was high noon Banner time, it was 11 a.m. Tennessean time." +# +# Seigenthaler J. For 100 years, Tennessean had it covered. +# The Tennessean 2007-05-11, republished 2015-04-06. +# https://www.tennessean.com/story/insider/extras/2015/04/06/archives-seigenthaler-for-100-years-the-tennessean-had-it-covered/25348545/ + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Chicago 1920 only - Jun 13 2:00 1:00 D Rule Chicago 1920 1921 - Oct lastSun 2:00 0 S @@ -945,21 +970,21 @@ Zone America/Indiana/Vincennes -5:50:07 - LMT 1883 Nov 18 12:09:53 -5:00 US E%sT # # Perry County, Indiana, switched from eastern to central time in April 2006. +# From Alois Triendl (2019-07-09): +# The Indianapolis News, Friday 27 October 1967 states that Perry County +# returned to CST. It went again to EST on 27 April 1969, as documented by the +# Indianapolis star of Saturday 26 April. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER -Rule Perry 1946 only - Apr lastSun 2:00 1:00 D -Rule Perry 1946 only - Sep lastSun 2:00 0 S -Rule Perry 1953 1954 - Apr lastSun 2:00 1:00 D -Rule Perry 1953 1959 - Sep lastSun 2:00 0 S Rule Perry 1955 only - May 1 0:00 1:00 D +Rule Perry 1955 1960 - Sep lastSun 2:00 0 S Rule Perry 1956 1963 - Apr lastSun 2:00 1:00 D -Rule Perry 1960 only - Oct lastSun 2:00 0 S -Rule Perry 1961 only - Sep lastSun 2:00 0 S -Rule Perry 1962 1963 - Oct lastSun 2:00 0 S +Rule Perry 1961 1963 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Indiana/Tell_City -5:47:03 - LMT 1883 Nov 18 12:12:57 -6:00 US C%sT 1946 -6:00 Perry C%sT 1964 Apr 26 2:00 - -5:00 - EST 1969 + -5:00 - EST 1967 Oct 29 2:00 + -6:00 US C%sT 1969 Apr 27 2:00 -5:00 US E%sT 1971 -5:00 - EST 2006 Apr 2 2:00 -6:00 US C%sT @@ -1035,16 +1060,27 @@ Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:19:44 # clear how this matched civil time in Louisville, so for now continue # to assume Louisville switched at noon new local time, like New York. # +# From Michael Deckers (2019-08-06): +# From the contemporary source given by Alois Treindl, +# the switch in Louisville on 1946-04-28 was on 00:01 +# From Paul Eggert (2019-08-26): +# That source was the Louisville Courier-Journal, 1946-04-27, p 4. +# Shanks gives 02:00 for all 20th-century transition times in Louisville. +# Evidently this is wrong for spring 1946. Although also likely wrong +# for other dates, we have no data. +# # Part of Kentucky left its clocks alone in 1974. # This also includes Clark, Floyd, and Harrison counties in Indiana. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Louisville 1921 only - May 1 2:00 1:00 D Rule Louisville 1921 only - Sep 1 2:00 0 S -Rule Louisville 1941 1961 - Apr lastSun 2:00 1:00 D +Rule Louisville 1941 only - Apr lastSun 2:00 1:00 D Rule Louisville 1941 only - Sep lastSun 2:00 0 S +Rule Louisville 1946 only - Apr lastSun 0:01 1:00 D Rule Louisville 1946 only - Jun 2 2:00 0 S +Rule Louisville 1950 1961 - Apr lastSun 2:00 1:00 D Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S -Rule Louisville 1956 1960 - Oct lastSun 2:00 0 S +Rule Louisville 1956 1961 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58 -6:00 US C%sT 1921 @@ -1134,18 +1170,19 @@ Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36 # one hour in 1914." This change is not in Shanks. We have no more # info, so omit this for now. # -# From Paul Eggert (2017-07-26): -# Although Shanks says Detroit observed DST in 1967 from 06-14 00:01 -# until 10-29 00:01, I now see multiple reports that this is incorrect. -# For example, according to a 50-year anniversary report about the 1967 -# Detroit riots and a major-league doubleheader on 1967-07-23, "By the time -# the last fly ball of the doubleheader settled into the glove of leftfielder -# Lenny Green, it was after 7 p.m. Detroit did not observe daylight saving -# time, so light was already starting to fail. Twilight was made even deeper -# by billowing columns of smoke that ascended in an unbroken wall north of the -# ballpark." See: Dow B. Detroit '67: As violence unfolded, Tigers played two -# at home vs. Yankees. Detroit Free Press 2017-07-23. -# https://www.freep.com/story/sports/mlb/tigers/2017/07/23/detroit-tigers-1967-riot-new-york-yankees/499951001/ +# From Paul Eggert (2019-07-06): +# Due to a complicated set of legal maneuvers, in 1967 Michigan did +# not start daylight saving time when the rest of the US did. +# Instead, it began DST on Jun 14 at 00:01. This was big news: +# the Detroit Free Press reported it at the top of Page 1 on +# 1967-06-14, in an article "State Adjusting to Switch to Fast Time" +# by Gary Blonston, above an article about Thurgood Marshall's +# confirmation to the US Supreme Court. Although Shanks says Detroit +# observed DST until 1967-10-29 00:01, that time of day seems to be +# incorrect, as the Free Press later said DST ended in Michigan at the +# same time as the rest of the US. Also, although Shanks reports no DST in +# Detroit in 1968, it did observe DST that year; in the November 1968 +# election Michigan voters narrowly repealed DST, effective 1969. # # Most of Michigan observed DST from 1973 on, but was a bit late in 1975. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER @@ -1156,7 +1193,9 @@ Zone America/Detroit -5:32:11 - LMT 1905 -6:00 - CST 1915 May 15 2:00 -5:00 - EST 1942 -5:00 US E%sT 1946 - -5:00 Detroit E%sT 1973 + -5:00 Detroit E%sT 1967 Jun 14 0:01 + -5:00 US E%sT 1969 + -5:00 - EST 1973 -5:00 US E%sT 1975 -5:00 - EST 1975 Apr 27 2:00 -5:00 US E%sT @@ -1205,6 +1244,12 @@ Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00 # # Other sources occasionally used include: # +# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94 +# . +# +# Pearce C. The Great Daylight Saving Time Controversy. +# Australian Ebook Publisher. 2017. ISBN 978-1-925516-96-8. +# # Edward W. Whitman, World Time Differences, # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), # which I found in the UCLA library. @@ -1213,9 +1258,6 @@ Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00 # # [PDF] (1914-03) # -# Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94 -# . -# # See the 'europe' file for Greenland. # Canada @@ -1857,9 +1899,8 @@ Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16 # Willett (1914-03) notes that DST "has been in operation ... in the # City of Moose Jaw, Saskatchewan, for one year." -# From Paul Eggert (2019-04-26): -# Chris Pearce's book "The Great Daylight Saving Time Controversy" (2017) -# says that Regina observed DST in 1914-1917. No dates and times, +# From Paul Eggert (2019-07-25): +# Pearce's book says Regina observed DST in 1914-1917. No dates and times, # unfortunately. It also says that in 1914 Saskatoon observed DST # from 1 June to 6 July, and that DST was also tried out in Davidson, # Melfort, and Prince Albert. @@ -1939,6 +1980,19 @@ Zone America/Swift_Current -7:11:20 - LMT 1905 Sep # Alberta +# From Alois Triendl (2019-07-19): +# There was no DST in Alberta in 1967... Calgary Herald, 29 April 1967. +# 1969, no DST, from Edmonton Journal 18 April 1969 +# +# From Paul Eggert (2019-07-25): +# Pearce's book says that Alberta's 1948 Daylight Saving Act required +# Mountain Standard Time without DST, and that "anyone who broke that law +# could be fined up to $25 and costs". There seems to be no record of +# anybody paying the fine. The law was not changed until an August 1971 +# plebiscite reinstituted DST in 1972. This story is also mentioned in: +# Boyer JP. Forcing Choice: The Risky Reward of Referendums. Dundum. 2017. +# ISBN 978-1459739123. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D Rule Edm 1918 only - Oct 27 2:00 0 S @@ -1951,10 +2005,6 @@ Rule Edm 1945 only - Aug 14 23:00u 1:00 P # Peace Rule Edm 1945 only - Sep lastSun 2:00 0 S Rule Edm 1947 only - Apr lastSun 2:00 1:00 D Rule Edm 1947 only - Sep lastSun 2:00 0 S -Rule Edm 1967 only - Apr lastSun 2:00 1:00 D -Rule Edm 1967 only - Oct lastSun 2:00 0 S -Rule Edm 1969 only - Apr lastSun 2:00 1:00 D -Rule Edm 1969 only - Oct lastSun 2:00 0 S Rule Edm 1972 1986 - Apr lastSun 2:00 1:00 D Rule Edm 1972 2006 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] @@ -2037,8 +2087,20 @@ Zone America/Edmonton -7:33:52 - LMT 1906 Sep # been on MST (-0700) like Dawson Creek since it advanced its clocks on # 2015-03-08. # -# From Paul Eggert (2015-09-23): +# From Paul Eggert (2019-07-25): # Shanks says Fort Nelson did not observe DST in 1946, unlike Vancouver. +# Alois Triendl confirmed this on 07-22, citing the 1946-04-27 Vancouver Daily +# Province. He also cited the 1946-09-28 Victoria Daily Times, which said +# that Vancouver, Victoria, etc. "change at midnight Saturday"; for now, +# guess they meant 02:00 Sunday since 02:00 was common practice in Vancouver. +# +# Early Vancouver, Volume Four, by Major J.S. Matthews, V.D., 2011 edition +# says that a 1922 plebiscite adopted DST, but a 1923 plebiscite rejected it. +# http://former.vancouver.ca/ctyclerk/archives/digitized/EarlyVan/SearchEarlyVan/Vol4pdf/MatthewsEarlyVancouverVol4_DaylightSavings.pdf +# A catalog entry for a newspaper clipping seems to indicate that Vancouver +# observed DST in 1941 from 07-07 through 09-27; see +# https://searcharchives.vancouver.ca/daylight-saving-1918-starts-again-july-7-1941-start-d-s-sept-27-end-of-d-s-1941 +# We have no further details, so omit them for now. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Vanc 1918 only - Apr 14 2:00 1:00 D @@ -2047,7 +2109,7 @@ Rule Vanc 1942 only - Feb 9 2:00 1:00 W # War Rule Vanc 1945 only - Aug 14 23:00u 1:00 P # Peace Rule Vanc 1945 only - Sep 30 2:00 0 S Rule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D -Rule Vanc 1946 only - Oct 13 2:00 0 S +Rule Vanc 1946 only - Sep 29 2:00 0 S Rule Vanc 1947 1961 - Sep lastSun 2:00 0 S Rule Vanc 1962 2006 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] diff --git a/southamerica b/southamerica index 397a2cc3acd4..9b679c61435f 100644 --- a/southamerica +++ b/southamerica @@ -1230,14 +1230,8 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914 # From Juan Correa (2016-12-04): # Magallanes region ... will keep DST (UTC -3) all year round.... # http://www.soychile.cl/Santiago/Sociedad/2016/12/04/433428/Bachelet-firmo-el-decreto-para-establecer-un-horario-unico-para-la-Region-de-Magallanes.aspx -# # From Deborah Goldsmith (2017-01-19): # http://www.diariooficial.interior.gob.cl/publicaciones/2017/01/17/41660/01/1169626.pdf -# From Paul Eggert (2017-01-19): -# The above says the Magallanes change expires 2019-05-11 at 24:00, -# so in theory, they will revert to -04/-03 after that, which means -# they will switch from -03 to -04 one hour after Santiago does that day. -# For now, assume that they will not revert. # From Juan Correa (2018-08-13): # As of moments ago, the Ministry of Energy in Chile has announced the new @@ -1258,6 +1252,11 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914 # So we extend the new rules on Saturdays at 24:00 mainland time indefinitely. # From Juan Correa (2019-02-04): # http://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/1498738.pdf +# From Paul Eggert (2019-09-01): +# The above says the Magallanes exception expires 2022-04-02 at 24:00, +# so in theory, they will revert to -04/-03 after that. +# For now, assume that they will not revert, +# since they have extended the expiration date once already. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Chile 1927 1931 - Sep 1 0:00 1:00 - diff --git a/theory.html b/theory.html index e0b32335867d..7af7cb23c657 100644 --- a/theory.html +++ b/theory.html @@ -21,6 +21,7 @@ database
  • Time and date functions
  • Interface stability
    • +
  • Leap seconds
  • Calendrical issues
  • Time and time zones on other planets
    • @@ -98,8 +99,9 @@ A tz timezone corresponds to a ruleset that can have more than two changes per year, these changes need not merely flip back and forth between two alternatives, and the rules themselves can change at times. -Whether and when a timezone changes its -clock, and even the timezone's notional base offset from UTC, are variable. +Whether and when a timezone changes its clock, +and even the timezone's notional base offset from UTC, +are variable. It does not always make sense to talk about a timezone's "base offset", which is not necessarily a single number.

    @@ -428,7 +430,7 @@ in decreasing order of importance: EET/EEST Eastern European, GST/GDT Guam, HST/HDT/HWT/HPT Hawaii, - HKT/HKST Hong Kong, + HKT/HKST/HKWT Hong Kong, IST India, IST/GMT Irish, IST/IDT/IDDT Israel, @@ -972,7 +974,8 @@ an older zic. that do not fit into the POSIX model.
  • - POSIX requires that systems ignore leap seconds. + POSIX requires that time_t clock counts exclude leap + seconds.
  • The tz code attempts to support all the @@ -1072,7 +1075,8 @@ an older zic. where time_t is signed.
  • - These functions can account for leap seconds, thanks to Bradley White. + These functions can account for leap seconds; + see Leap seconds below.
    • @@ -1248,6 +1252,69 @@ between now and the future time.

    +
    +

    Leap seconds

    +

    +The tz code and data can account for leap seconds, +thanks to code contributed by Bradley White. +However, the leap second support of this package is rarely used directly +because POSIX requires leap seconds to be excluded and many +software packages would mishandle leap seconds if they were present. +Instead, leap seconds are more commonly handled by occasionally adjusting +the operating system kernel clock as described in +Precision timekeeping, +and this package by default installs a leapseconds file +commonly used by +NTP +software that adjusts the kernel clock. +However, kernel-clock twiddling approximates UTC only roughly, +and systems needing more-precise UTC can use this package's leap +second support directly. +

    + +

    +The directly-supported mechanism assumes that time_t +counts of seconds since the POSIX epoch normally include leap seconds, +as opposed to POSIX time_t counts which exclude leap seconds. +This modified timescale is converted to UTC +at the same point that time zone and DST adjustments are applied – +namely, at calls to localtime and analogous functions – +and the process is driven by leap second information +stored in alternate versions of the TZif files. +Because a leap second adjustment may be needed even +if no time zone correction is desired, +calls to gmtime-like functions +also need to consult a TZif file, +conventionally named GMT, +to see whether leap second corrections are needed. +To convert an application's time_t timestamps to or from +POSIX time_t timestamps (for use when, say, +embedding or interpreting timestamps in portable +tar +files), +the application can call the utility functions +time2posix and posix2time +included with this package. +

    + +

    +If the POSIX-compatible TZif file set is installed +in a directory whose basename is zoneinfo, the +leap-second-aware file set is by default installed in a separate +directory zoneinfo-leaps. +Although each process can have its own time zone by setting +its TZ environment variable, there is no support for some +processes being leap-second aware while other processes are +POSIX-compatible; the leap-second choice is system-wide. +So if you configure your kernel to count leap seconds, you should also +discard zoneinfo and rename zoneinfo-leaps +to zoneinfo. +Alternatively, you can install just one set of TZif files +in the first place; see the REDO variable in this package's +makefile. +

    +
    +

    Calendrical issues

    diff --git a/version b/version index 8d4a43baf40b..db18f8311daf 100644 --- a/version +++ b/version @@ -1 +1 @@ -2019b +2019c From 545922d605327cfdaff9461177686766dfe6a2fe Mon Sep 17 00:00:00 2001 From: Philip Paeps Date: Fri, 24 Apr 2020 04:53:23 +0000 Subject: [PATCH 3/3] Import tzdata 2020a --- Makefile | 38 ++++++--- NEWS | 82 ++++++++++++++++++ africa | 52 +++++++----- asia | 212 ++++++++++++++++++++++++++++++++++------------ backward | 1 + backzone | 29 +++++++ europe | 16 ++-- leap-seconds.list | 10 +-- leapseconds | 12 ++- leapseconds.awk | 17 +++- northamerica | 48 +++++++++-- theory.html | 23 ++--- version | 2 +- zone.tab | 12 +-- zone1970.tab | 12 +-- 15 files changed, 420 insertions(+), 146 deletions(-) diff --git a/Makefile b/Makefile index fec0a4f7eb36..610bf199d9a3 100644 --- a/Makefile +++ b/Makefile @@ -150,6 +150,15 @@ TIME_T_ALTERNATIVES_TAIL = int32_t uint32_t uint64_t REDO= posix_right +# Whether to put an "Expires" line in the leapseconds file. +# Use EXPIRES_LINE=1 to put the line in, 0 to omit it. +# The EXPIRES_LINE value matters only if REDO's value contains "right". +# If you change EXPIRES_LINE, remove the leapseconds file before running "make". +# zic's support for the Expires line was introduced in tzdb 2020a, +# and EXPIRES_LINE defaults to 0 for now so that the leapseconds file +# can be given to older zic implementations. +EXPIRES_LINE= 0 + # To install data in text form that has all the information of the TZif data, # (optionally incorporating leap second information), use # TZDATA_TEXT= tzdata.zi leapseconds @@ -295,8 +304,9 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ # than TM_GMTOFF and TM_ZONE. However, most of them are standardized. # # # # To omit or support the external variable "tzname", add one of: -# # -DHAVE_TZNAME=0 -# # -DHAVE_TZNAME=1 +# # -DHAVE_TZNAME=0 # do not support "tzname" +# # -DHAVE_TZNAME=1 # support "tzname", which is defined by system library +# # -DHAVE_TZNAME=2 # support and define "tzname" # # to the "CFLAGS=" line. "tzname" is required by POSIX 1988 and later. # # If not defined, the code attempts to guess HAVE_TZNAME from other macros. # # Warning: unless time_tz is also defined, HAVE_TZNAME=1 can cause @@ -304,16 +314,20 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ # # presumably due to memory allocation issues. # # # # To omit or support the external variables "timezone" and "daylight", add -# # -DUSG_COMPAT=0 -# # -DUSG_COMPAT=1 +# # -DUSG_COMPAT=0 # do not support +# # -DUSG_COMPAT=1 # support, and variables are defined by system library +# # -DUSG_COMPAT=2 # support and define variables # # to the "CFLAGS=" line; "timezone" and "daylight" are inspired by # # Unix Systems Group code and are required by POSIX 2008 (with XSI) and later. # # If not defined, the code attempts to guess USG_COMPAT from other macros. # # # # To support the external variable "altzone", add -# # -DALTZONE +# # -DALTZONE=0 # do not support +# # -DALTZONE=1 # support "altzone", which is defined by system library +# # -DALTZONE=2 # support and define "altzone" # # to the end of the "CFLAGS=" line; although "altzone" appeared in # # System V Release 3.1 it has not been standardized. +# # If not defined, the code attempts to guess ALTZONE from other macros. # # If you want functions that were inspired by early versions of X3J11's work, # add @@ -321,9 +335,7 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ # to the end of the "CFLAGS=" line. This arranges for the functions # "tzsetwall", "offtime", "timelocal", "timegm", "timeoff", # "posix2time", and "time2posix" to be added to the time conversion library. -# "tzsetwall" is like "tzset" except that it arranges for local wall clock -# time (rather than the timezone specified in the TZ environment variable) -# to be used. +# "tzsetwall" is deprecated and is intended to be removed soon; see NEWS. # "offtime" is like "gmtime" except that it accepts a second (long) argument # that gives an offset to add to the time_t when converting it. # "timelocal" is equivalent to "mktime". @@ -333,7 +345,6 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ # that gives an offset to use when converting to a time_t. # "posix2time" and "time2posix" are described in an included manual page. # X3J11's work does not describe any of these functions. -# Sun has provided "tzsetwall", "timelocal", and "timegm" in SunOS 4.0. # These functions may well disappear in future releases of the time # conversion package. # @@ -505,11 +516,11 @@ RANLIB= : TZCOBJS= zic.o TZDOBJS= zdump.o localtime.o asctime.o strftime.o DATEOBJS= date.o localtime.o strftime.o asctime.o -LIBSRCS= localtime.c asctime.c difftime.c -LIBOBJS= localtime.o asctime.o difftime.o +LIBSRCS= localtime.c asctime.c difftime.c strftime.c +LIBOBJS= localtime.o asctime.o difftime.o strftime.o HEADERS= tzfile.h private.h NONLIBSRCS= zic.c zdump.c -NEWUCBSRCS= date.c strftime.c +NEWUCBSRCS= date.c SOURCES= $(HEADERS) $(LIBSRCS) $(NONLIBSRCS) $(NEWUCBSRCS) \ tzselect.ksh workman.sh MANS= newctime.3 newstrftime.3 newtzset.3 time2posix.3 \ @@ -651,7 +662,8 @@ yearistype: yearistype.sh chmod +x yearistype leapseconds: $(LEAP_DEPS) - $(AWK) -f leapseconds.awk leap-seconds.list >$@.out + $(AWK) -v EXPIRES_LINE=$(EXPIRES_LINE) \ + -f leapseconds.awk leap-seconds.list >$@.out mv $@.out $@ # Arguments to pass to submakes of install_data. diff --git a/NEWS b/NEWS index af0f06f7192d..321e09084190 100644 --- a/NEWS +++ b/NEWS @@ -1,5 +1,87 @@ News for the tz database +Release 2020a - 2020-04-23 16:03:47 -0700 + + Briefly: + Morocco springs forward on 2020-05-31, not 2020-05-24. + Canada's Yukon advanced to -07 year-round on 2020-03-08. + America/Nuuk renamed from America/Godthab. + zic now supports expiration dates for leap second lists. + + Changes to future timestamps + + Morocco's second spring-forward transition in 2020 will be May 31, + not May 24 as predicted earlier. (Thanks to Semlali Naoufal.) + Adjust future-year predictions to use the first Sunday after the + day after Ramadan, not the first Sunday after Ramadan. + + Canada's Yukon, represented by America/Whitehorse and + America/Dawson, advanced to -07 year-round, beginning with its + spring-forward transition on 2020-03-08, and will not fall back on + 2020-11-01. Although a government press release calls this + "permanent Pacific Daylight Saving Time", we prefer MST for + consistency with nearby Dawson Creek, Creston, and Fort Nelson. + (Thanks to Tim Parenti.) + + Changes to past timestamps + + Shanghai observed DST in 1919. (Thanks to Phake Nick.) + + Changes to timezone identifiers + + To reflect current usage in English better, America/Godthab has + been renamed to America/Nuuk. A backwards-compatibility link + remains for the old name. + + Changes to code + + localtime.c no longer mishandles timestamps after the last + transition in a TZif file with leap seconds and with daylight + saving time transitions projected into the indefinite future. + For example, with TZ='America/Los_Angeles' with leap seconds, + zdump formerly reported a DST transition on 2038-03-14 + from 01:59:32.999... to 02:59:33 instead of the correct transition + from 01:59:59.999... to 03:00:00. + + zic -L now supports an Expires line in the leapseconds file, and + truncates the TZif output accordingly. This propagates leap + second expiration information into the TZif file, and avoids the + abovementioned localtime.c bug as well as similar bugs present in + many client implementations. If no Expires line is present, zic + -L instead truncates the TZif output based on the #expires comment + present in leapseconds files distributed by tzdb 2018f and later; + however, this usage is obsolescent. For now, the distributed + leapseconds file has an Expires line that is commented out, so + that the file can be fed to older versions of zic which ignore the + commented-out line. Future tzdb distributions are planned to + contain a leapseconds file with an Expires line. + + The configuration macros HAVE_TZNAME and USG_COMPAT should now be + set to 1 if the system library supports the feature, and 2 if not. + As before, these macros are nonzero if tzcode should support the + feature, zero otherwise. + + The configuration macro ALTZONE now has the same values with the + same meaning as HAVE_TZNAME and USG_COMPAT. + + The code's defense against CRLF in leap-seconds.list is now + portable to POSIX awk. (Problem reported by Deborah Goldsmith.) + + Although the undocumented tzsetwall function is not changed in + this release, it is now deprecated in preparation for removal in + future releases. Due to POSIX requirements, tzsetwall has not + worked for some time. Any code that uses it should instead use + tzalloc(NULL) or, if portability trumps thread-safety, should + unset the TZ environment variable. + + Changes to commentary + + The Îles-de-la-Madeleine and the Listuguj reserve are noted as + following America/Halifax, and comments about Yukon's "south" and + "north" have been corrected to say "east" and "west". (Thanks to + Jeffery Nichols.) + + Release 2019c - 2019-09-11 08:59:48 -0700 Briefly: diff --git a/africa b/africa index feb6017d959b..724744f37723 100644 --- a/africa +++ b/africa @@ -867,19 +867,25 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis # Morocco will be on GMT starting from Sunday, May 5th 2019 at 3am. # The switch to GMT+1 will occur on Sunday, June 9th 2019 at 2am.... # http://fr.le360.ma/societe/voici-la-date-du-retour-a-lheure-legale-au-maroc-188222 + +# From Semlali Naoufal (2020-04-14): +# Following the announcement by the Moroccan government, the switch to +# GMT time will take place on Sunday, April 19, 2020 from 3 a.m. and +# the return to GMT+1 time will take place on Sunday, May 31, 2020 at 2 a.m.... +# https://maroc-diplomatique.net/maroc-le-retour-a-lheure-gmt-est-prevu-dimanche-prochain/ +# http://aujourdhui.ma/actualite/gmt1-retour-a-lheure-normale-dimanche-prochain-1 # -# From Paul Eggert (2019-05-20): -# This agrees with our 2018-11-01 guess that the Moroccan government -# would continue the practice of falling back at 03:00 the last Sunday -# before Ramadan, and of springing forward at 02:00 the first Sunday after -# Ramadan, as this has been the practice since 2012. To implement this, -# transition dates for 2019 through 2087 were determined by running the -# following program under GNU Emacs 26.2. -# (let ((islamic-year 1440)) +# From Paul Eggert (2020-04-14): +# For now, guess that in the future Morocco will fall back at 03:00 +# the last Sunday before Ramadan, and spring forward at 02:00 the +# first Sunday after the day after Ramadan. To implement this, +# transition dates for 2021 through 2087 were determined by running +# the following program under GNU Emacs 26.3. +# (let ((islamic-year 1442)) # (require 'cal-islam) # (while (< islamic-year 1511) # (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year))) -# (b (calendar-islamic-to-absolute (list 10 1 islamic-year))) +# (b (1+ (calendar-islamic-to-absolute (list 10 1 islamic-year)))) # (sunday 0)) # (while (/= sunday (mod (setq a (1- a)) 7))) # (while (/= sunday (mod b 7)) @@ -939,7 +945,7 @@ Rule Morocco 2018 only - Jun 17 2:00 1:00 - Rule Morocco 2019 only - May 5 3:00 -1:00 - Rule Morocco 2019 only - Jun 9 2:00 0 - Rule Morocco 2020 only - Apr 19 3:00 -1:00 - -Rule Morocco 2020 only - May 24 2:00 0 - +Rule Morocco 2020 only - May 31 2:00 0 - Rule Morocco 2021 only - Apr 11 3:00 -1:00 - Rule Morocco 2021 only - May 16 2:00 0 - Rule Morocco 2022 only - Mar 27 3:00 -1:00 - @@ -955,7 +961,7 @@ Rule Morocco 2026 only - Mar 22 2:00 0 - Rule Morocco 2027 only - Feb 7 3:00 -1:00 - Rule Morocco 2027 only - Mar 14 2:00 0 - Rule Morocco 2028 only - Jan 23 3:00 -1:00 - -Rule Morocco 2028 only - Feb 27 2:00 0 - +Rule Morocco 2028 only - Mar 5 2:00 0 - Rule Morocco 2029 only - Jan 14 3:00 -1:00 - Rule Morocco 2029 only - Feb 18 2:00 0 - Rule Morocco 2029 only - Dec 30 3:00 -1:00 - @@ -971,7 +977,7 @@ Rule Morocco 2033 only - Dec 25 2:00 0 - Rule Morocco 2034 only - Nov 5 3:00 -1:00 - Rule Morocco 2034 only - Dec 17 2:00 0 - Rule Morocco 2035 only - Oct 28 3:00 -1:00 - -Rule Morocco 2035 only - Dec 2 2:00 0 - +Rule Morocco 2035 only - Dec 9 2:00 0 - Rule Morocco 2036 only - Oct 19 3:00 -1:00 - Rule Morocco 2036 only - Nov 23 2:00 0 - Rule Morocco 2037 only - Oct 4 3:00 -1:00 - @@ -987,7 +993,7 @@ Rule Morocco 2041 only - Sep 29 2:00 0 - Rule Morocco 2042 only - Aug 10 3:00 -1:00 - Rule Morocco 2042 only - Sep 21 2:00 0 - Rule Morocco 2043 only - Aug 2 3:00 -1:00 - -Rule Morocco 2043 only - Sep 6 2:00 0 - +Rule Morocco 2043 only - Sep 13 2:00 0 - Rule Morocco 2044 only - Jul 24 3:00 -1:00 - Rule Morocco 2044 only - Aug 28 2:00 0 - Rule Morocco 2045 only - Jul 9 3:00 -1:00 - @@ -1003,7 +1009,7 @@ Rule Morocco 2049 only - Jul 4 2:00 0 - Rule Morocco 2050 only - May 15 3:00 -1:00 - Rule Morocco 2050 only - Jun 26 2:00 0 - Rule Morocco 2051 only - May 7 3:00 -1:00 - -Rule Morocco 2051 only - Jun 11 2:00 0 - +Rule Morocco 2051 only - Jun 18 2:00 0 - Rule Morocco 2052 only - Apr 28 3:00 -1:00 - Rule Morocco 2052 only - Jun 2 2:00 0 - Rule Morocco 2053 only - Apr 13 3:00 -1:00 - @@ -1019,7 +1025,7 @@ Rule Morocco 2057 only - Apr 8 2:00 0 - Rule Morocco 2058 only - Feb 17 3:00 -1:00 - Rule Morocco 2058 only - Mar 31 2:00 0 - Rule Morocco 2059 only - Feb 9 3:00 -1:00 - -Rule Morocco 2059 only - Mar 16 2:00 0 - +Rule Morocco 2059 only - Mar 23 2:00 0 - Rule Morocco 2060 only - Feb 1 3:00 -1:00 - Rule Morocco 2060 only - Mar 7 2:00 0 - Rule Morocco 2061 only - Jan 16 3:00 -1:00 - @@ -1029,13 +1035,13 @@ Rule Morocco 2062 only - Feb 12 2:00 0 - Rule Morocco 2062 only - Dec 31 3:00 -1:00 - Rule Morocco 2063 only - Feb 4 2:00 0 - Rule Morocco 2063 only - Dec 16 3:00 -1:00 - -Rule Morocco 2064 only - Jan 20 2:00 0 - +Rule Morocco 2064 only - Jan 27 2:00 0 - Rule Morocco 2064 only - Dec 7 3:00 -1:00 - Rule Morocco 2065 only - Jan 11 2:00 0 - Rule Morocco 2065 only - Nov 22 3:00 -1:00 - Rule Morocco 2066 only - Jan 3 2:00 0 - Rule Morocco 2066 only - Nov 14 3:00 -1:00 - -Rule Morocco 2066 only - Dec 19 2:00 0 - +Rule Morocco 2066 only - Dec 26 2:00 0 - Rule Morocco 2067 only - Nov 6 3:00 -1:00 - Rule Morocco 2067 only - Dec 11 2:00 0 - Rule Morocco 2068 only - Oct 21 3:00 -1:00 - @@ -1045,13 +1051,13 @@ Rule Morocco 2069 only - Nov 17 2:00 0 - Rule Morocco 2070 only - Oct 5 3:00 -1:00 - Rule Morocco 2070 only - Nov 9 2:00 0 - Rule Morocco 2071 only - Sep 20 3:00 -1:00 - -Rule Morocco 2071 only - Oct 25 2:00 0 - +Rule Morocco 2071 only - Nov 1 2:00 0 - Rule Morocco 2072 only - Sep 11 3:00 -1:00 - Rule Morocco 2072 only - Oct 16 2:00 0 - Rule Morocco 2073 only - Aug 27 3:00 -1:00 - Rule Morocco 2073 only - Oct 8 2:00 0 - Rule Morocco 2074 only - Aug 19 3:00 -1:00 - -Rule Morocco 2074 only - Sep 23 2:00 0 - +Rule Morocco 2074 only - Sep 30 2:00 0 - Rule Morocco 2075 only - Aug 11 3:00 -1:00 - Rule Morocco 2075 only - Sep 15 2:00 0 - Rule Morocco 2076 only - Jul 26 3:00 -1:00 - @@ -1061,7 +1067,7 @@ Rule Morocco 2077 only - Aug 22 2:00 0 - Rule Morocco 2078 only - Jul 10 3:00 -1:00 - Rule Morocco 2078 only - Aug 14 2:00 0 - Rule Morocco 2079 only - Jun 25 3:00 -1:00 - -Rule Morocco 2079 only - Jul 30 2:00 0 - +Rule Morocco 2079 only - Aug 6 2:00 0 - Rule Morocco 2080 only - Jun 16 3:00 -1:00 - Rule Morocco 2080 only - Jul 21 2:00 0 - Rule Morocco 2081 only - Jun 1 3:00 -1:00 - @@ -1077,7 +1083,7 @@ Rule Morocco 2085 only - May 27 2:00 0 - Rule Morocco 2086 only - Apr 14 3:00 -1:00 - Rule Morocco 2086 only - May 19 2:00 0 - Rule Morocco 2087 only - Mar 30 3:00 -1:00 - -Rule Morocco 2087 only - May 4 2:00 0 - +Rule Morocco 2087 only - May 11 2:00 0 - # For dates after the somewhat-arbitrary cutoff of 2087, assume that # Morocco will no longer observe DST. At some point this table will # need to be extended, though quite possibly Morocco will change the @@ -1179,7 +1185,7 @@ Link Africa/Maputo Africa/Lusaka # Zambia Rule Namibia 1994 only - Mar 21 0:00 -1:00 WAT Rule Namibia 1994 2017 - Sep Sun>=1 2:00 0 CAT Rule Namibia 1995 2017 - Apr Sun>=1 2:00 -1:00 WAT -# Rearguard section, for parsers that do not support negative DST. +# Rearguard section, for parsers lacking negative DST; see ziguard.awk. #Rule Namibia 1994 only - Mar 21 0:00 0 WAT #Rule Namibia 1994 2017 - Sep Sun>=1 2:00 1:00 CAT #Rule Namibia 1995 2017 - Apr Sun>=1 2:00 0 WAT @@ -1193,7 +1199,7 @@ Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8 2:00 - SAST 1990 Mar 21 # independence # Vanguard section, for zic and other parsers that support negative DST. 2:00 Namibia %s -# Rearguard section, for parsers that do not support negative DST. +# Rearguard section, for parsers lacking negative DST; see ziguard.awk. # 2:00 - CAT 1994 Mar 21 0:00 # From Paul Eggert (2017-04-07): # The official date of the 2017 rule change was 2017-10-24. See: diff --git a/asia b/asia index b29c896e5fde..106efad877bc 100644 --- a/asia +++ b/asia @@ -286,6 +286,27 @@ Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoon # China +# From Phake Nick (2020-04-15): +# According to this news report: +# http://news.sina.com.cn/c/2004-09-01/19524201403.shtml +# on April 11, 1919, newspaper in Shanghai said clocks in Shanghai will spring +# forward for an hour starting from midnight of that Saturday. The report did +# not mention what happened in Shanghai thereafter, but it mentioned that a +# similar trial in Tianjin which ended at October 1st as citizens are told to +# recede the clock on September 30 from 12:00pm to 11:00pm. The trial at +# Tianjin got terminated in 1920. +# +# From Paul Eggert (2020-04-15): +# The Returns of Trade and Trade Reports, page 711, says "Daylight saving was +# given a trial during the year, and from the 12th April to the 1st October +# the clocks were all set one hour ahead of sun time. Though the scheme was +# generally esteemed a success, it was announced early in 1920 that it would +# not be repeated." +# +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Shang 1919 only - Apr 12 24:00 1:00 D +Rule Shang 1919 only - Sep 30 24:00 0 S + # From Paul Eggert (2018-10-02): # The following comes from Table 1 of: # Li Yu. Research on the daylight saving movement in 1940s Shanghai. @@ -294,6 +315,89 @@ Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoon # The table lists dates only; I am guessing 00:00 and 24:00 transition times. # Also, the table lists the planned end of DST in 1949, but the corresponding # zone line cuts this off on May 28, when the Communists took power. + +# From Phake Nick (2020-04-15): +# +# For the history of time in Shanghai between 1940-1942, the situation is +# actually slightly more complex than the table [below].... At the time, +# there were three different authorities in Shanghai, including Shanghai +# International Settlement, a settlement established by western countries with +# its own westernized form of government, Shanghai French Concession, similar +# to the international settlement but is controlled by French, and then the +# rest of the city of Shanghai, which have already been controlled by Japanese +# force through a puppet local government (Wang Jingwei regime). It was +# additionally complicated by the circumstances that, according to the 1940s +# Shanghai summer time essay cited in the database, some +# departments/businesses/people in the Shanghai city itself during that time +# period, refused to change their clock and instead only changed their opening +# hours. +# +# For example, as quoted in the article, in 1940, other than the authority +# itself, power, tram, bus companies, cinema, department stores, and other +# public service organizations have all decided to follow the summer time and +# spring forward the clock. On the other hand, the custom office refused to +# spring forward the clock because of worry on mechanical wear to the physical +# clock, postal office refused to spring forward because of disruption to +# business and log-keeping, although they did changed their office hour to +# match rest of the city. So is travel agents, and also weather +# observatory. It is said both time standards had their own supporters in the +# city at the time, those who prefer new time standard would have moved their +# clock while those who prefer the old time standard would keep their clock +# unchange, and there were different clocks that use different time standard +# in the city at the time for people who use different time standard to adjust +# their clock to their preferred time. +# +# a. For the 1940 May 31 spring forward, the essay claim that it was +# coordinared between the international settlement authority and the French +# concession authority and have gathered support from Hong Kong and Xiamen, +# that it would spring forward an hour from May 31 "midnight", and the essay +# claim "Hong Kong government implemented the spring forward in the same time +# on the same date as Shanghai". +# +# b. For the 1940 fall back, it was said that they initially intended to do +# so on September 30 00:59 at night, however they postponed it to October 12 +# after discussion with relevant parties. However schools restored to the +# original schedule ten days earlier. +# +# c. For the 1941 spring forward, it is said to start from March 15 +# "following the previous year's method", and in addition to that the essay +# cited an announcement in 1941 from the Wang regime which said the Special +# City of Shanghai under Wang regime control will follow the DST rule set by +# the Settlements, irrespective of the original DST plan announced by the Wang +# regime for other area under its control(April 1 to September 30). (no idea +# to situation before that announcement) +# +# d. For the 1941 fall back, it was said that the fall back would occurs at +# the end of September (A newspaper headline cited by the essay, published on +# October 1, 1941, have the headlines which said "French Concession would +# rewind to the old clock this morning), but it ultimately didn't happen due +# to disagreement between the international settlement authority and the +# French concession authority, and the fall back ultimately occurred on +# November 1. +# +# e. In 1941 December, Japan have officially started war with the United +# States and the United Kingdom, and in Shanghai they have marched into the +# international settlement, taken over its control +# +# f. For the 1942 spring forward, the essay said that the spring forward +# started on January 31. It said this time the custom office and postal +# department will also change their clocks, unlike before. +# +# g. The essay itself didn't cover any specific changes thereafter until the +# end of the war, it quoted a November 1942 command from the government of the +# Wang regime, which claim the daylight saving time applies year round during +# the war. However, the essay ambiguously said the period is "February 1 to +# September 30", which I don't really understand what is the meaning of such +# period in the context of year round implementation here.. More researches +# might be needed to show exactly what happened during that period of time. + +# From Phake Nick (2020-04-15): +# According to a Japanese tour bus pamphlet in Nanjing area believed to be +# from around year 1941: http://www.tt-museum.jp/tairiku_0280_nan1941.html , +# the schedule listed was in the format of Japanese time. Which indicate some +# use of the Japanese time (instead of syncing by DST) might have occurred in +# the Yangtze river delta area during that period of time although the scope +# of such use will need to be investigated to determine. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Shang 1940 only - Jun 1 0:00 1:00 D @@ -572,7 +676,7 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928 6:00 - +06 -# Hong Kong (Xianggang) +# Hong Kong # Milne gives 7:36:41.7; round this. @@ -582,9 +686,7 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928 # it is not [an] observatory, but the official meteorological agency of HK, # and also serves as the official timing agency), there are some missing # and incorrect rules. Although the exact switch over time is missing, I -# think 3:30 is correct. The official DST record for Hong Kong can be -# obtained from -# http://www.hko.gov.hk/gts/time/Summertime.htm +# think 3:30 is correct. # From Phake Nick (2018-10-27): # According to Singaporean newspaper @@ -695,10 +797,10 @@ Zone Asia/Urumqi 5:50:20 - LMT 1928 # Resolution of the Legislative Council passed on 9 May 1979 # https://www.legco.gov.hk/yr78-79/english/lc_sitg/hansard/h790509.pdf#page=39 -# From Paul Eggert (2019-05-31): +# From Paul Eggert (2020-04-15): # Here are the dates given at -# https://www.hko.gov.hk/gts/time/Summertime.htm -# as of 2014-06-19: +# https://www.hko.gov.hk/en/gts/time/Summertime.htm +# as of 2020-02-10: # Year Period # 1941 15 Jun to 30 Sep # 1942 Whole year @@ -1828,6 +1930,47 @@ Zone Asia/Jerusalem 2:20:54 - LMT 1880 # '9:00' and 'JST' is from Guy Harris. +# From Paul Eggert (2020-01-19): +# Starting in the 7th century, Japan generally followed an ancient Chinese +# timekeeping system that divided night and day into six hours each, +# with hour length depending on season. In 1873 the government +# started requiring the use of a Western style 24-hour clock. See: +# Yulia Frumer, "Making Time: Astronomical Time Measurement in Tokugawa Japan" +# . As the tzdb code and +# data support only 24-hour clocks, its tables model timestamps before +# 1873 using Western-style local mean time. + +# From Hideyuki Suzuki (1998-11-09): +# 'Tokyo' usually stands for the former location of Tokyo Astronomical +# Observatory: 139° 44' 40.90" E (9h 18m 58.727s), 35° 39' 16.0" N. +# This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996' +# edited by National Astronomical Observatory of Japan.... +# JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST). +# The law is enacted on 1886-07-07. + +# From Hideyuki Suzuki (1998-11-16): +# The ordinance No. 51 (1886) established "standard time" in Japan, +# which stands for the time on 135° E. +# In the ordinance No. 167 (1895), "standard time" was renamed to "central +# standard time". And the same ordinance also established "western standard +# time", which stands for the time on 120° E.... But "western standard +# time" was abolished in the ordinance No. 529 (1937). In the ordinance No. +# 167, there is no mention regarding for what place western standard time is +# standard.... +# +# I wrote "ordinance" above, but I don't know how to translate. +# In Japanese it's "chokurei", which means ordinance from emperor. + +# From Yu-Cheng Chuang (2013-07-12): +# ...the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause +# about standard time" ... The adoption began from Jan 1, 1896. +# https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時) +# +# ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which +# means the whole Japan territory, including later occupations, adopt Japan +# Central Time (UT+9). The adoption began on Oct 1, 1937. +# https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件 + # From Paul Eggert (1995-03-06): # Today's _Asahi Evening News_ (page 4) reports that Japan had # daylight saving between 1948 and 1951, but "the system was discontinued @@ -1876,37 +2019,6 @@ Rule Japan 1948 1951 - Sep Sat>=8 25:00 0 S Rule Japan 1949 only - Apr Sat>=1 24:00 1:00 D Rule Japan 1950 1951 - May Sat>=1 24:00 1:00 D -# From Hideyuki Suzuki (1998-11-09): -# 'Tokyo' usually stands for the former location of Tokyo Astronomical -# Observatory: 139° 44' 40.90" E (9h 18m 58.727s), 35° 39' 16.0" N. -# This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996' -# edited by National Astronomical Observatory of Japan.... -# JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST). -# The law is enacted on 1886-07-07. - -# From Hideyuki Suzuki (1998-11-16): -# The ordinance No. 51 (1886) established "standard time" in Japan, -# which stands for the time on 135° E. -# In the ordinance No. 167 (1895), "standard time" was renamed to "central -# standard time". And the same ordinance also established "western standard -# time", which stands for the time on 120° E.... But "western standard -# time" was abolished in the ordinance No. 529 (1937). In the ordinance No. -# 167, there is no mention regarding for what place western standard time is -# standard.... -# -# I wrote "ordinance" above, but I don't know how to translate. -# In Japanese it's "chokurei", which means ordinance from emperor. - -# From Yu-Cheng Chuang (2013-07-12): -# ...the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause -# about standard time" ... The adoption began from Jan 1, 1896. -# https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時) -# -# ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which -# means the whole Japan territory, including later occupations, adopt Japan -# Central Time (UT+9). The adoption began on Oct 1, 1937. -# https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件 - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u 9:00 Japan J%sT @@ -3086,22 +3198,9 @@ Zone Asia/Karachi 4:28:12 - LMT 1907 # [T]he Palestinian cabinet decision (Mar 8th 2016) published on # http://www.palestinecabinet.gov.ps/WebSite/Upload/Decree/GOV_17/16032016134830.pdf # states that summer time will end on Oct 29th at 01:00. -# -# From Tim Parenti (2016-10-19): -# Predict fall transitions on October's last Saturday at 01:00 from now on. -# This is consistent with the 2016 transition as well as our spring -# predictions. -# -# From Paul Eggert (2016-10-19): -# It's also consistent with predictions in the following URLs today: -# https://www.timeanddate.com/time/change/gaza-strip/gaza -# https://www.timeanddate.com/time/change/west-bank/hebron # From Sharef Mustafa (2018-03-16): -# Palestine summer time will start on Mar 24th 2018 by advancing the -# clock by 60 minutes as per Palestinian cabinet decision published on -# the official website, though the decree did not specify the exact -# time of the time shift. +# Palestine summer time will start on Mar 24th 2018 ... # http://www.palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e7a42ab7-ee23-435a-b9c8-a4f7e81f3817 # From Even Scharning (2019-03-23): @@ -3111,15 +3210,20 @@ Zone Asia/Karachi 4:28:12 - LMT 1907 # From Sharif Mustafa (2019-03-26): # The Palestinian cabinet announced today that the switch to DST will # be on Fri Mar 29th 2019 by advancing the clock by 60 minutes. -# The decree signing date is Mar 12th but it was not published till today. -# The decree does not specify the exact time of switch. # http://palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e54e9ea1-50ee-4137-84df-0d6c78da259b # # From Even Scharning (2019-04-10): # Our source in Palestine said it happened Friday 29 at 00:00 local time.... + +# From Sharef Mustafa (2019-10-18): +# Palestine summer time will end on midnight Oct 26th 2019 ... +# http://www.palestinecabinet.gov.ps/website/ar/ViewDetails?ID=43948 # # From Paul Eggert (2019-04-10): # For now, guess spring-ahead transitions are March's last Friday at 00:00. +# +# From Tim Parenti (2016-10-19): +# Predict fall transitions on October's last Saturday at 01:00 from now on. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule EgyptAsia 1957 only - May 10 0:00 1:00 S diff --git a/backward b/backward index b4ae3cf9d3e2..e13ae527a9e8 100644 --- a/backward +++ b/backward @@ -17,6 +17,7 @@ Link America/Atikokan America/Coral_Harbour Link America/Argentina/Cordoba America/Cordoba Link America/Tijuana America/Ensenada Link America/Indiana/Indianapolis America/Fort_Wayne +Link America/Nuuk America/Godthab Link America/Indiana/Indianapolis America/Indianapolis Link America/Argentina/Jujuy America/Jujuy Link America/Indiana/Knox America/Knox_IN diff --git a/backzone b/backzone index 3ccadd139240..91fa21da8e39 100644 --- a/backzone +++ b/backzone @@ -33,6 +33,35 @@ # assumes rules from other files. In the tz distribution, use # 'make PACKRATDATA=backzone zones' to compile and install this file. + +# From Paul Eggert (2020-04-15): +# The following remarks should be incorporated into this table sometime. +# Patches in 'git format-patch' format would be welcome. +# +# From Phake Nick (2020-04-15): +# ... the historical timezone data for those China zones seems to be +# incorrect. The transition to GMT+8 date given there for these zones +# were 1980 which also contradict the file description that they do +# not disagree with normal zone after 1970. According to sources that +# have also been cited in the asia file, except Xinjiang and Tibet, +# they should have adopted the Beijing Time from around 1949/1950 +# depends on exactly when each of those cities were taken over by the +# communist army. And they should also follow the DST setting of +# Asia/Shanghai after that point of time. In addition, +# http://gaz.ncl.edu.tw/detail.jsp?sysid=E1091792 the document from +# Chongqing Nationalist government say in year 1945 all of China +# should adopt summer time due to the war (not sure whether it +# continued after WWII ends)(Probably only enforced in area under +# their rule at the time?) The Asia/Harbin's 1932 and 1940 entry +# should also be incorrect. As per sources recorded at +# https://wiki.suikawiki.org/n/%E6%BA%80%E5%B7%9E%E5%9B%BD%E3%81%AE%E6%A8%99%E6%BA%96%E6%99%82 +# , in 1932 Harbin should have adopted UTC+8:00 instead of data +# currently listed in the tz database according to official +# announcement from Manchuko. And they should have adopted GMT+9 in +# 1937 January 1st according to official announcement at the time +# being cited on the webpage. + + # Zones are sorted by zone name. Each zone is preceded by the # name of the country that the zone is in, along with any other # commentary and rules associated with the entry. diff --git a/europe b/europe index 361b396c026d..5593c6079db1 100644 --- a/europe +++ b/europe @@ -549,12 +549,13 @@ Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2 0:00 1:00 IST 1947 Nov 2 2:00s 0:00 - GMT 1948 Apr 18 2:00s 0:00 GB-Eire GMT/IST 1968 Oct 27 -# The next line is for when negative SAVE values are used. +# Vanguard section, for zic and other parsers that support negative DST. 1:00 Eire IST/GMT -# These three lines are for when SAVE values are always nonnegative. +# Rearguard section, for parsers lacking negative DST; see ziguard.awk. # 1:00 - IST 1971 Oct 31 2:00u # 0:00 GB-Eire GMT/IST 1996 # 0:00 EU GMT/IST +# End of rearguard section. ############################################################################### @@ -1018,7 +1019,7 @@ Zone Europe/Prague 0:57:44 - LMT 1850 1:00 Czech CE%sT 1946 Dec 1 3:00 # Vanguard section, for zic and other parsers that support negative DST. 1:00 -1:00 GMT 1947 Feb 23 2:00 -# Rearguard section, for parsers that do not support negative DST. +# Rearguard section, for parsers lacking negative DST; see ziguard.awk. # 0:00 - GMT 1947 Feb 23 2:00 # End of rearguard section. 1:00 Czech CE%sT 1979 @@ -1175,14 +1176,17 @@ Zone America/Danmarkshavn -1:14:40 - LMT 1916 Jul 28 -3:00 - -03 1980 Apr 6 2:00 -3:00 EU -03/-02 1996 0:00 - GMT +# +# Use the old name Scoresbysund, as the current name Ittoqqortoormiit +# exceeds tzdb's 14-letter limit and has no common English abbreviation. Zone America/Scoresbysund -1:27:52 - LMT 1916 Jul 28 # Ittoqqortoormiit -2:00 - -02 1980 Apr 6 2:00 -2:00 C-Eur -02/-01 1981 Mar 29 -1:00 EU -01/+00 -Zone America/Godthab -3:26:56 - LMT 1916 Jul 28 # Nuuk +Zone America/Nuuk -3:26:56 - LMT 1916 Jul 28 # Godthåb -3:00 - -03 1980 Apr 6 2:00 -3:00 EU -03/-02 -Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik air base +Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik -4:00 Thule A%sT # Estonia @@ -1552,7 +1556,7 @@ Zone Europe/Budapest 1:16:20 - LMT 1890 Oct # # From January 1st, 1908 the whole of Iceland was standardised at 1 hour # behind GMT. Previously, local mean solar time was used in different parts -# of Iceland, the almanak had been based on Reykjavik mean solar time which +# of Iceland, the almanak had been based on Reykjavík mean solar time which # was 1 hour and 28 minutes behind GMT. # # "first day of winter" referred to [below] means the first day of the 26 weeks diff --git a/leap-seconds.list b/leap-seconds.list index a1bc5a782a83..ac153daebf86 100644 --- a/leap-seconds.list +++ b/leap-seconds.list @@ -62,7 +62,7 @@ # Terry Quinn, "The BIPM and the Accurate Measurement # of Time," Proc. of the IEEE, Vol. 79, pp. 894-905, # July, 1991. -# reprinted in: +# reprinted in: # Christine Hackman and Donald B Sullivan (eds.) # Time and Frequency Measurement # American Association of Physics Teachers (1996) @@ -204,10 +204,10 @@ # current -- the update time stamp, the data and the name of the file # will not change. # -# Updated through IERS Bulletin C58 -# File expires on: 28 June 2020 +# Updated through IERS Bulletin C59 +# File expires on: 28 December 2020 # -#@ 3802291200 +#@ 3818102400 # 2272060800 10 # 1 Jan 1972 2287785600 11 # 1 Jul 1972 @@ -252,4 +252,4 @@ # the hash line is also ignored in the # computation. # -#h f28827d2 f263b6c3 ec0f19eb a3e0dbf0 97f3fa30 +#h a1c168ae 27c79a7d 9dddcfc3 bcfe616b 2e2c44ea diff --git a/leapseconds b/leapseconds index 7808df8f894f..3b9cc7b20317 100644 --- a/leapseconds +++ b/leapseconds @@ -64,9 +64,15 @@ Leap 2012 Jun 30 23:59:60 + S Leap 2015 Jun 30 23:59:60 + S Leap 2016 Dec 31 23:59:60 + S +# UTC timestamp when this leap second list expires. +# Any additional leap seconds will come after this. +# This Expires line is commented out for now, +# so that pre-2020a zic implementations do not reject this file. +#Expires 2020 Dec 28 00:00:00 + # POSIX timestamps for the data in this file: #updated 1467936000 (2016-07-08 00:00:00 UTC) -#expires 1593302400 (2020-06-28 00:00:00 UTC) +#expires 1609113600 (2020-12-28 00:00:00 UTC) -# Updated through IERS Bulletin C58 -# File expires on: 28 June 2020 +# Updated through IERS Bulletin C59 +# File expires on: 28 December 2020 diff --git a/leapseconds.awk b/leapseconds.awk index 1fe50120afda..924ade9e2193 100644 --- a/leapseconds.awk +++ b/leapseconds.awk @@ -68,12 +68,12 @@ BEGIN { monthabbr[11] = "Nov" monthabbr[12] = "Dec" - # Strip trailing CR, in case the input has CRLF form a la NIST. - RS = "\r?\n" - sstamp_init() } +# In case the input has CRLF form a la NIST. +{ sub(/\r$/, "") } + /^#[ \t]*[Uu]pdated through/ || /^#[ \t]*[Ff]ile expires on/ { last_lines = last_lines $0 "\n" } @@ -100,6 +100,17 @@ BEGIN { } END { + sstamp_to_ymdhMs(expires, ss_NTP) + + print "" + print "# UTC timestamp when this leap second list expires." + print "# Any additional leap seconds will come after this." + print "# This Expires line is commented out for now," + print "# so that pre-2020a zic implementations do not reject this file." + printf "%sExpires %.4d\t%s\t%.2d\t%.2d:%.2d:%.2d\n", \ + EXPIRES_LINE ? "" : "#", \ + ss_year, monthabbr[ss_month], ss_mday, ss_hour, ss_min, ss_sec + # The difference between the NTP and POSIX epochs is 70 years # (including 17 leap days), each 24 hours of 60 minutes of 60 # seconds each. diff --git a/northamerica b/northamerica index 8771d96e64e8..febf05bfddb6 100644 --- a/northamerica +++ b/northamerica @@ -86,7 +86,7 @@ # For more about the first ten years of DST in the United States, see # Robert Garland, Ten years of daylight saving from the Pittsburgh standpoint # (Carnegie Library of Pittsburgh, 1927). -# http://www.clpgh.org/exhibit/dst.html +# https://web.archive.org/web/20160517155308/http://www.clpgh.org/exhibit/dst.html # # Shanks says that DST was called "War Time" in the US in 1918 and 1919. # However, DST was imposed by the Standard Time Act of 1918, which @@ -1470,7 +1470,8 @@ Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay -4:00 Canada A%sT -# west Labrador, Nova Scotia, Prince Edward I +# west Labrador, Nova Scotia, Prince Edward I, +# Îles-de-la-Madeleine, Listuguj reserve # From Brian Inglis (2015-07-20): # From the historical weather station records available at: @@ -1489,6 +1490,13 @@ Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay # in Canada to observe DST in 1971 but not 1970; for now we'll assume # this is a typo. +# From Jeffery Nichols (2020-01-09): +# America/Halifax ... also applies to Îles-de-la-Madeleine and the Listuguj +# reserve in Quebec. Officially, this came into effect on January 1, 2007 +# (Legal Time Act, CQLR c T-5.1), but the legislative debates surrounding that +# bill say that it is "accommodating the customs and practices" of those +# regions, which suggests that they have always been in-line with Halifax. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Halifax 1916 only - Apr 1 0:00 1:00 D Rule Halifax 1916 only - Oct 1 0:00 0 S @@ -1582,19 +1590,20 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9 # Quebec -# From Paul Eggert (2015-03-24): +# From Paul Eggert (2020-01-10): # See America/Toronto for most of Quebec, including Montreal. +# See America/Halifax for the Îles de la Madeleine and the Listuguj reserve. # # Matthews and Vincent (1998) also write that Quebec east of the -63 # meridian is supposed to observe AST, but residents as far east as # Natashquan use EST/EDT, and residents east of Natashquan use AST. # The Quebec department of justice writes in # "The situation in Minganie and Basse-Côte-Nord" -# http://www.justice.gouv.qc.ca/english/publications/generale/temps-minganie-a.htm +# https://www.justice.gouv.qc.ca/en/department/ministre/functions-and-responsabilities/legal-time-in-quebec/the-situation-in-minganie-and-basse-cote-nord/ # that the coastal strip from just east of Natashquan to Blanc-Sablon # observes Atlantic standard time all year round. -# https://www.assnat.qc.ca/Media/Process.aspx?MediaId=ANQ.Vigie.Bll.DocumentGenerique_8845en -# says this common practice was codified into law as of 2007. +# This common practice was codified into law as of 2007; see Legal Time Act, +# CQLR c T-5.1 . # For lack of better info, guess this practice began around 1970, contra to # Shanks & Pottenger who have this region observing AST/ADT. @@ -1613,6 +1622,15 @@ Zone America/Blanc-Sablon -3:48:28 - LMT 1884 # Nipigon (EST) and Rainy River (CST) are the largest that we know of. # Far west Ontario is like Winnipeg; far east Quebec is like Halifax. +# From Jeffery Nichols (2020-02-06): +# According to the [Shanks] atlas, those western Ontario zones are huge, +# covering most of Ontario northwest of Sault Ste Marie and Timmins. +# The zones seem to include towns bigger than the ones they're named after, +# like Dryden in America/Rainy_River and Wawa (and maybe Attawapiskat) in +# America/Nipigon. I assume it's too much trouble to change the name of the +# zone (like when you found out that America/Glace_Bay includes Sydney, Nova +# Scotia).... + # From Mark Brader (2003-07-26): # [According to the Toronto Star] Orillia, Ontario, adopted DST # effective Saturday, 1912-06-22, 22:00; the article mentions that @@ -2419,6 +2437,18 @@ Zone America/Creston -7:46:04 - LMT 1884 # obtained in November 2008 should be ignored... # I apologize for reporting incorrect information in 2008. +# From Tim Parenti (2020-03-05): +# The government of Yukon announced [yesterday] the cessation of seasonal time +# changes. "After clocks are pushed ahead one hour on March 8, the territory +# will remain on [UTC-07]. ... [The government] found 93 per cent of +# respondents wanted to end seasonal time changes and, of that group, 70 per +# cent wanted 'permanent Pacific Daylight Saving Time.'" +# https://www.cbc.ca/news/canada/north/yukon-end-daylight-saving-time-1.5486358 +# +# Although the government press release prefers PDT, we prefer MST for +# consistency with nearby Dawson Creek, Creston, and Fort Nelson. +# https://yukon.ca/en/news/yukon-end-seasonal-time-change + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule NT_YK 1918 only - Apr 14 2:00 1:00 D Rule NT_YK 1918 only - Oct 27 2:00 0 S @@ -2473,11 +2503,13 @@ Zone America/Inuvik 0 - -00 1953 # Inuvik founded Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20 -9:00 NT_YK Y%sT 1967 May 28 0:00 -8:00 NT_YK P%sT 1980 - -8:00 Canada P%sT + -8:00 Canada P%sT 2020 Mar 8 2:00 + -7:00 - MST Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 -9:00 NT_YK Y%sT 1973 Oct 28 0:00 -8:00 NT_YK P%sT 1980 - -8:00 Canada P%sT + -8:00 Canada P%sT 2020 Mar 8 2:00 + -7:00 - MST ############################################################################### diff --git a/theory.html b/theory.html index 7af7cb23c657..c0e6f021269a 100644 --- a/theory.html +++ b/theory.html @@ -298,6 +298,10 @@ in decreasing order of importance: If a name is changed, put its old spelling in the 'backward' file. This means old spellings will continue to work. + Ordinarily a name change should occur only in the rare case when + a location's consensus English-language spelling changes; for example, + in 2008 Asia/Calcutta was renamed to Asia/Kolkata + due to long-time widespread use of the new city name instead of the old. @@ -1053,23 +1057,6 @@ an older zic. extra timezone_t argument. The functions were inspired by NetBSD. -

  • - A function tzsetwall has been added to arrange for the - system's best approximation to local (wall clock) time to be delivered - by subsequent calls to localtime. - Source code for portable applications that "must" run on local - time should call tzsetwall; - if such code is moved to "old" systems that do not - provide tzsetwall, you will not be able to generate an - executable program. - (These functions also arrange for local time to - be used if tzset is called – directly or - indirectly – and there is no TZ environment - variable; portable applications should not, however, rely on this - behavior since it is not the way SVR2 - systems behave.) -
  • Negative time_t values are supported, on systems where time_t is signed. @@ -1137,7 +1124,7 @@ The vestigial APIs are: may now examine localtime(&clock)->tm_zone (if TM_ZONE is defined) or tzname[localtime(&clock)->tm_isdst] - (if HAVE_TZNAME is defined) to learn the correct time + (if HAVE_TZNAME is nonzero) to learn the correct time zone abbreviation to use.
  • diff --git a/version b/version index db18f8311daf..7f680eec360e 100644 --- a/version +++ b/version @@ -1 +1 @@ -2019c +2020a diff --git a/zone.tab b/zone.tab index 408fcb2051d7..8d056e374835 100644 --- a/zone.tab +++ b/zone.tab @@ -131,8 +131,8 @@ CA +4906-11631 America/Creston MST - BC (Creston) CA +5946-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) CA +5848-12242 America/Fort_Nelson MST - BC (Ft Nelson) CA +4916-12307 America/Vancouver Pacific - BC (most areas) -CA +6043-13503 America/Whitehorse Pacific - Yukon (south) -CA +6404-13925 America/Dawson Pacific - Yukon (north) +CA +6043-13503 America/Whitehorse Pacific - Yukon (east) +CA +6404-13925 America/Dawson Pacific - Yukon (west) CC -1210+09655 Indian/Cocos CD -0418+01518 Africa/Kinshasa Dem. Rep. of Congo (west) CD -1140+02728 Africa/Lubumbashi Dem. Rep. of Congo (east) @@ -189,7 +189,7 @@ GF +0456-05220 America/Cayenne GG +492717-0023210 Europe/Guernsey GH +0533-00013 Africa/Accra GI +3608-00521 Europe/Gibraltar -GL +6411-05144 America/Godthab Greenland (most areas) +GL +6411-05144 America/Nuuk Greenland (most areas) GL +7646-01840 America/Danmarkshavn National Park (east coast) GL +7029-02158 America/Scoresbysund Scoresbysund/Ittoqqortoormiit GL +7634-06847 America/Thule Thule/Pituffik @@ -335,7 +335,7 @@ RU +554521+0373704 Europe/Moscow MSK+00 - Moscow area # The obsolescent zone.tab format cannot represent Europe/Simferopol well. # Put it in RU section and list as UA. See "territorial claims" above. # Programs should use zone1970.tab instead; see above. -UA +4457+03406 Europe/Simferopol MSK+00 - Crimea +UA +4457+03406 Europe/Simferopol Crimea RU +5836+04939 Europe/Kirov MSK+00 - Kirov RU +4621+04803 Europe/Astrakhan MSK+01 - Astrakhan RU +4844+04425 Europe/Volgograd MSK+01 - Volgograd @@ -399,8 +399,8 @@ TV -0831+17913 Pacific/Funafuti TW +2503+12130 Asia/Taipei TZ -0648+03917 Africa/Dar_es_Salaam UA +5026+03031 Europe/Kiev Ukraine (most areas) -UA +4837+02218 Europe/Uzhgorod Ruthenia -UA +4750+03510 Europe/Zaporozhye Zaporozh'ye/Zaporizhia; Lugansk/Luhansk (east) +UA +4837+02218 Europe/Uzhgorod Transcarpathia +UA +4750+03510 Europe/Zaporozhye Zaporozhye and east Lugansk UG +0019+03225 Africa/Kampala UM +2813-17722 Pacific/Midway Midway Islands UM +1917+16637 Pacific/Wake Wake Island diff --git a/zone1970.tab b/zone1970.tab index 822ffa1f1af0..53ee77e88e5e 100644 --- a/zone1970.tab +++ b/zone1970.tab @@ -128,8 +128,8 @@ CA +4906-11631 America/Creston MST - BC (Creston) CA +5946-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) CA +5848-12242 America/Fort_Nelson MST - BC (Ft Nelson) CA +4916-12307 America/Vancouver Pacific - BC (most areas) -CA +6043-13503 America/Whitehorse Pacific - Yukon (south) -CA +6404-13925 America/Dawson Pacific - Yukon (north) +CA +6043-13503 America/Whitehorse Pacific - Yukon (east) +CA +6404-13925 America/Dawson Pacific - Yukon (west) CC -1210+09655 Indian/Cocos CH,DE,LI +4723+00832 Europe/Zurich Swiss time CI,BF,GM,GN,ML,MR,SH,SL,SN,TG +0519-00402 Africa/Abidjan @@ -173,7 +173,7 @@ GE +4143+04449 Asia/Tbilisi GF +0456-05220 America/Cayenne GH +0533-00013 Africa/Accra GI +3608-00521 Europe/Gibraltar -GL +6411-05144 America/Godthab Greenland (most areas) +GL +6411-05144 America/Nuuk Greenland (most areas) GL +7646-01840 America/Danmarkshavn National Park (east coast) GL +7029-02158 America/Scoresbysund Scoresbysund/Ittoqqortoormiit GL +7634-06847 America/Thule Thule/Pituffik @@ -290,7 +290,7 @@ RS,BA,HR,ME,MK,SI +4450+02030 Europe/Belgrade RU +5443+02030 Europe/Kaliningrad MSK-01 - Kaliningrad RU +554521+0373704 Europe/Moscow MSK+00 - Moscow area # Mention RU and UA alphabetically. See "territorial claims" above. -RU,UA +4457+03406 Europe/Simferopol MSK+00 - Crimea +RU,UA +4457+03406 Europe/Simferopol Crimea RU +5836+04939 Europe/Kirov MSK+00 - Kirov RU +4621+04803 Europe/Astrakhan MSK+01 - Astrakhan RU +4844+04425 Europe/Volgograd MSK+01 - Volgograd @@ -341,8 +341,8 @@ TT,AG,AI,BL,DM,GD,GP,KN,LC,MF,MS,VC,VG,VI +1039-06131 America/Port_of_Spain TV -0831+17913 Pacific/Funafuti TW +2503+12130 Asia/Taipei UA +5026+03031 Europe/Kiev Ukraine (most areas) -UA +4837+02218 Europe/Uzhgorod Ruthenia -UA +4750+03510 Europe/Zaporozhye Zaporozh'ye/Zaporizhia; Lugansk/Luhansk (east) +UA +4837+02218 Europe/Uzhgorod Transcarpathia +UA +4750+03510 Europe/Zaporozhye Zaporozhye and east Lugansk UM +1917+16637 Pacific/Wake Wake Island US +404251-0740023 America/New_York Eastern (most areas) US +421953-0830245 America/Detroit Eastern - MI (most areas)