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Import tzdata 2022f

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This commit is contained in:
Philip Paeps 2022-10-29 10:33:53 +08:00
parent d479ab9945
commit 46649025f4
18 changed files with 736 additions and 615 deletions
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40
Makefile
View File

@ -210,7 +210,8 @@ LDLIBS=
# -DHAVE_DECL_ENVIRON if <unistd.h> declares 'environ'
# -DHAVE_DIRECT_H if mkdir needs <direct.h> (MS-Windows)
# -DHAVE_GENERIC=0 if _Generic does not work
# -DHAVE_GETTEXT if 'gettext' works (e.g., GNU/Linux, FreeBSD, Solaris)
# -DHAVE_GETRANDOM if getgrandom works (e.g., GNU/Linux)*
# -DHAVE_GETTEXT if 'gettext' works (e.g., GNU/Linux, FreeBSD, Solaris)*
# -DHAVE_INCOMPATIBLE_CTIME_R if your system's time.h declares
# ctime_r and asctime_r incompatibly with the POSIX standard
# (Solaris when _POSIX_PTHREAD_SEMANTICS is not defined).
@ -222,16 +223,17 @@ LDLIBS=
# -DHAVE_MALLOC_ERRNO=0 if malloc etc. do not set errno on failure.
# -DHAVE_POSIX_DECLS=0 if your system's include files do not declare
# functions like 'link' or variables like 'tzname' required by POSIX
# -DHAVE_SETENV=0 if your system lacks the setenv function
# -DHAVE_SNPRINTF=0 if your system lacks the snprintf function
# -DHAVE_STDBOOL_H if you have a non-C99 compiler with <stdbool.h>
# -DHAVE_STDINT_H if you have a non-C99 compiler with <stdint.h>
# -DHAVE_STDINT_H if you have a non-C99 compiler with <stdint.h>*
# -DHAVE_STRFTIME_L if <time.h> declares locale_t and strftime_l
# -DHAVE_STRDUP=0 if your system lacks the strdup function
# -DHAVE_STRTOLL=0 if your system lacks the strtoll function
# -DHAVE_SYMLINK=0 if your system lacks the symlink function
# -DHAVE_SYS_STAT_H=0 if your compiler lacks a <sys/stat.h>
# -DHAVE_SYS_STAT_H=0 if your compiler lacks a <sys/stat.h>*
# -DHAVE_TZSET=0 if your system lacks a tzset function
# -DHAVE_UNISTD_H=0 if your compiler lacks a <unistd.h>
# -DHAVE_UNISTD_H=0 if your compiler lacks a <unistd.h>*
# -DHAVE_UTMPX_H=0 if your compiler lacks a <utmpx.h>*
# -Dlocale_t=XXX if your system uses XXX instead of locale_t
# -DRESERVE_STD_EXT_IDS if your platform reserves standard identifiers
# with external linkage, e.g., applications cannot define 'localtime'.
@ -254,14 +256,17 @@ LDLIBS=
# Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below.
# -DZIC_BLOAT_DEFAULT=\"fat\" to default zic's -b option to "fat", and
# similarly for "slim". 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
# default is "slim".
# and bugs in some TZif readers, notably older ones that
# ignore or otherwise mishandle 64-bit data in TZif files;
# however, fat TZif files may trigger bugs in newer TZif readers.
# Slim TZif files are more efficient, and are the default.
# -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)
# $(GCC_DEBUG_FLAGS) if you are using recent GCC and want lots of checking
#
# * Options marked "*" can be omitted if your compiler is C23 compatible.
#
# Select instrumentation via "make GCC_INSTRUMENT='whatever'".
GCC_INSTRUMENT = \
-fsanitize=undefined -fsanitize-address-use-after-scope \
@ -397,8 +402,9 @@ ZIC= $(zic) $(ZFLAGS)
# To shrink the size of installed TZif files,
# append "-r @N" to omit data before N-seconds-after-the-Epoch.
# To grow the files and work around older application bugs, append "-b fat";
# see ZIC_BLOAT_DEFAULT above.
# To grow the files and work around bugs in older applications,
# possibly at the expense of introducing bugs in newer ones,
# append "-b fat"; see ZIC_BLOAT_DEFAULT above.
# See the zic man page for more about -b and -r.
ZFLAGS=
@ -818,13 +824,19 @@ check_slashed_abbrs: $(TDATA_TO_CHECK)
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) '/^Link/ {printf "%.5d %s\n", g, $$3} /^$$/ {g++}' \
backward | LC_ALL=C sort -cu
$(AWK) '/^Zone/ {print $$2}' backzone | LC_ALL=C sort -cu
touch $@
check_links: checklinks.awk $(TDATA_TO_CHECK) tzdata.zi
$(AWK) -f checklinks.awk $(TDATA_TO_CHECK)
$(AWK) -f checklinks.awk tzdata.zi
$(AWK) \
-v DATAFORM=$(DATAFORM) \
-v backcheck=backward \
-f checklinks.awk $(TDATA_TO_CHECK)
$(AWK) \
-v DATAFORM=$(DATAFORM) \
-f checklinks.awk tzdata.zi
touch $@
check_tables: checktab.awk $(YDATA) backward $(ZONETABLES)

101
NEWS
View File

@ -1,5 +1,106 @@
News for the tz database
Release 2022f - 2022-10-28 18:04:57 -0700
Briefly:
Mexico will no longer observe DST except near the US border.
Chihuahua moves to year-round -06 on 2022-10-30.
Fiji no longer observes DST.
Move links to 'backward'.
In vanguard form, GMT is now a Zone and Etc/GMT a link.
zic now supports links to links, and vanguard form uses this.
Simplify four Ontario zones.
Fix a Y2438 bug when reading TZif data.
Enable 64-bit time_t on 32-bit glibc platforms.
Omit large-file support when no longer needed.
In C code, use some C23 features if available.
Remove no-longer-needed workaround for Qt bug 53071.
Changes to future timestamps.
Mexico will no longer observe DST after 2022, except for areas
near the US border that continue to observe US DST rules.
On 2022-10-30 at 02:00 the Mexican state of Chihuahua moves
from -07 (-06 with DST) to year-round -06, thus not changing
its clocks that day. The new law states that Chihuahua
near the US border no longer observes US DST.
Fiji will not observe DST in 2022/3. (Thanks to Shalvin Narayan.)
For now, assume DST is suspended indefinitely.
Changes to data
Move links to 'backward' to ease and simplify link maintenance.
This affects generated data only if you use 'make BACKWARD='.
GMT is now a Zone and Etc/GMT a link instead of vice versa,
as GMT is needed for leap second support whereas Etc/GMT is not.
However, this change exposes a bug in TZUpdater 2.3.2 so it is
present only in vanguard form for now.
Vanguard form now uses links to links, as zic now supports this.
Changes to past timestamps
Simplify four Ontario zones, as most of the post-1970 differences
seem to have been imaginary. (Problem reported by Chris Walton.)
Move America/Nipigon, America/Rainy_River, and America/Thunder_Bay
to 'backzone'; backward-compatibility links still work, albeit
with some different timestamps before November 2005.
Changes to code
zic now supports links to links regardless of input line order.
For example, if Australia/Sydney is a Zone, the lines
Link Australia/Canberra Australia/ACT
Link Australia/Sydney Australia/Canberra
now work correctly, even though the shell commands
ln Australia/Canberra Australia/ACT
ln Australia/Sydney Australia/Canberra
would fail because the first command attempts to use a link
Australia/Canberra that does not exist until after the second
command is executed. Previously, zic had unspecified behavior if
a Link line's target was another link, and zic often misbehaved if
a Link line's target was a later Link line.
Fix line number in zic's diagnostic for a link to a link.
Fix a bug that caused localtime to mishandle timestamps starting
in the year 2438 when reading data generated by 'zic -b fat' when
distant-future DST transitions occur at times given in standard
time or in UT, not the usual case of local time. This occurs when
the corresponding .zi Rule lines specify DST transitions with TO
columns of 'max' and AT columns that end in 's' or 'u'. The
number 2438 comes from the 32-bit limit in the year 2038, plus the
400-year Gregorian cycle. (Problem reported by Bradley White.)
On glibc 2.34 and later, which optionally supports 64-bit time_t
on platforms like x86 where time_t was traditionally 32 bits,
default time_t to 64 instead of 32 bits. This lets functions like
localtime support timestamps after the year 2038, and fixes
year-2038 problems in zic when accessing files dated after 2038.
To continue to limit time_t to 32 bits on these platforms, use
"make CFLAGS='-D_TIME_BITS=32'".
In C code, do not enable large-file support on platforms like AIX
and macOS that no longer need it now that tzcode does not use
off_t or related functions like 'stat'. Large-file support is
still enabled by default on GNU/Linux, as it is needed for 64-bit
time_t support.
In C code, prefer C23 keywords to pre-C23 macros for alignof,
bool, false, and true. Also, use the following C23 features if
available: __has_include, unreachable.
zic no longer works around Qt bug 53071, as the relevant Qt
releases have been out of support since 2019. This change affects
only fat TZif files, as thin files never had the workaround.
zdump no longer modifies the environ vector when compiled on
platforms lacking tm_zone or when compiled with -DUSE_LTZ=0.
This avoid undefined behavior on POSIX platforms.
Release 2022e - 2022-10-11 11:13:02 -0700
Briefly:

213
africa
View File

@ -97,22 +97,6 @@ Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 16
0:00 Algeria WE%sT 1981 May
1:00 - CET
# Angola
# Benin
# See Africa/Lagos.
# Botswana
# See Africa/Maputo.
# Burkina Faso
# See Africa/Abidjan.
# Burundi
# See Africa/Maputo.
# Cameroon
# See Africa/Lagos.
# Cape Verde / Cabo Verde
#
# From Paul Eggert (2018-02-16):
@ -127,9 +111,6 @@ Zone Atlantic/Cape_Verde -1:34:04 - LMT 1912 Jan 01 2:00u # Praia
-2:00 - -02 1975 Nov 25 2:00
-1:00 - -01
# Central African Republic
# See Africa/Lagos.
# Chad
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena
@ -137,33 +118,29 @@ Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena
1:00 1:00 WAST 1980 Mar 8
1:00 - WAT
# Comoros
# See Africa/Nairobi.
# Burkina Faso
# Côte d'Ivoire (Ivory Coast)
# The Gambia
# Ghana
# Guinea
# Iceland
# Mali
# Mauritania
# St Helena
# Senegal
# Sierra Leone
# Togo
# Democratic Republic of the Congo
# See Africa/Lagos for the western part and Africa/Maputo for the eastern.
# The other parts of the St Helena territory are similar:
# Tristan da Cunha: on GMT, say Whitman and the CIA
# Ascension: on GMT, say the USNO (1995-12-21) and the CIA
# Gough (scientific station since 1955; sealers wintered previously):
# on GMT, says the CIA
# Inaccessible, Nightingale: uninhabited
# Republic of the Congo
# See Africa/Lagos.
# Côte d'Ivoire / Ivory Coast
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Abidjan -0:16:08 - LMT 1912
0:00 - GMT
Link Africa/Abidjan Africa/Accra # Ghana
Link Africa/Abidjan Africa/Bamako # Mali
Link Africa/Abidjan Africa/Banjul # The Gambia
Link Africa/Abidjan Africa/Conakry # Guinea
Link Africa/Abidjan Africa/Dakar # Senegal
Link Africa/Abidjan Africa/Freetown # Sierra Leone
Link Africa/Abidjan Africa/Lome # Togo
Link Africa/Abidjan Africa/Nouakchott # Mauritania
Link Africa/Abidjan Africa/Ouagadougou # Burkina Faso
Link Africa/Abidjan Atlantic/Reykjavik # Iceland
Link Africa/Abidjan Atlantic/St_Helena # St Helena
# Djibouti
# See Africa/Nairobi.
###############################################################################
@ -359,33 +336,6 @@ Rule Egypt 2014 only - Sep lastThu 24:00 0 -
Zone Africa/Cairo 2:05:09 - LMT 1900 Oct
2:00 Egypt EE%sT
# Equatorial Guinea
# See Africa/Lagos.
# Eritrea
# See Africa/Nairobi.
# Eswatini (formerly Swaziland)
# See Africa/Johannesburg.
# Ethiopia
# See Africa/Nairobi.
#
# Unfortunately tzdb records only Western clock time in use in Ethiopia,
# as the tzdb format is not up to properly recording a common Ethiopian
# timekeeping practice that is based on solar time. See:
# Mortada D. If you have a meeting in Ethiopia, you'd better double
# check the time. PRI's The World. 2015-01-30 15:15 -05.
# https://www.pri.org/stories/2015-01-30/if-you-have-meeting-ethiopia-you-better-double-check-time
# Gabon
# See Africa/Lagos.
# The Gambia
# Ghana
# Guinea
# See Africa/Abidjan.
# Guinea-Bissau
#
# From Paul Eggert (2018-02-16):
@ -398,7 +348,16 @@ Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 1:00u
-1:00 - -01 1975
0:00 - GMT
# Comoros
# Djibouti
# Eritrea
# Ethiopia
# Kenya
# Madagascar
# Mayotte
# Somalia
# Tanzania
# Uganda
# From P Chan (2020-10-24):
#
@ -441,6 +400,14 @@ Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 1:00u
# The 1908-05-01 announcement does not give an effective date,
# so just say "1908 May".
# From Paul Eggert (2018-09-11):
# Unfortunately tzdb records only Western clock time in use in Ethiopia,
# as the tzdb format is not up to properly recording a common Ethiopian
# timekeeping practice that is based on solar time. See:
# Mortada D. If you have a meeting in Ethiopia, you'd better double
# check the time. PRI's The World. 2015-01-30 15:15 -05.
# https://www.pri.org/stories/2015-01-30/if-you-have-meeting-ethiopia-you-better-double-check-time
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Nairobi 2:27:16 - LMT 1908 May
2:30 - +0230 1928 Jun 30 24:00
@ -448,18 +415,6 @@ Zone Africa/Nairobi 2:27:16 - LMT 1908 May
2:30 - +0230 1936 Dec 31 24:00
2:45 - +0245 1942 Jul 31 24:00
3:00 - EAT
Link Africa/Nairobi Africa/Addis_Ababa # Ethiopia
Link Africa/Nairobi Africa/Asmara # Eritrea
Link Africa/Nairobi Africa/Dar_es_Salaam # Tanzania
Link Africa/Nairobi Africa/Djibouti
Link Africa/Nairobi Africa/Kampala # Uganda
Link Africa/Nairobi Africa/Mogadishu # Somalia
Link Africa/Nairobi Indian/Antananarivo # Madagascar
Link Africa/Nairobi Indian/Comoro
Link Africa/Nairobi Indian/Mayotte
# Lesotho
# See Africa/Johannesburg.
# Liberia
#
@ -540,16 +495,6 @@ Zone Africa/Tripoli 0:52:44 - LMT 1920
1:00 Libya CE%sT 2013 Oct 25 2:00
2:00 - EET
# Madagascar
# See Africa/Nairobi.
# Malawi
# See Africa/Maputo.
# Mali
# Mauritania
# See Africa/Abidjan.
# Mauritius
# From Steffen Thorsen (2008-06-25):
@ -643,12 +588,6 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
# Agalega Is, Rodriguez
# no information; probably like Indian/Mauritius
# Mayotte
# See Africa/Nairobi.
# Morocco
# See Africa/Ceuta for Spanish Morocco.
# From Alex Krivenyshev (2008-05-09):
# Here is an article that Morocco plan to introduce Daylight Saving Time between
# 1 June, 2008 and 27 September, 2008.
@ -1137,7 +1076,14 @@ Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún
0:00 Morocco +00/+01 2018 Oct 28 3:00
1:00 Morocco +01/+00
# Botswana
# Burundi
# Democratic Republic of the Congo (eastern)
# Malawi
# Mozambique
# Rwanda
# Zambia
# Zimbabwe
#
# Shanks gives 1903-03-01 for the transition to CAT.
# Perhaps the 1911-05-26 Portuguese decree
@ -1147,14 +1093,6 @@ Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Africa/Maputo 2:10:20 - LMT 1903 Mar
2:00 - CAT
Link Africa/Maputo Africa/Blantyre # Malawi
Link Africa/Maputo Africa/Bujumbura # Burundi
Link Africa/Maputo Africa/Gaborone # Botswana
Link Africa/Maputo Africa/Harare # Zimbabwe
Link Africa/Maputo Africa/Kigali # Rwanda
Link Africa/Maputo Africa/Lubumbashi # E Dem. Rep. of Congo
Link Africa/Maputo Africa/Lusaka # Zambia
# Namibia
@ -1233,9 +1171,16 @@ Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8
# 2:00 - CAT
# End of rearguard section.
# Niger
# See Africa/Lagos.
# Angola
# Benin
# Cameroon
# Central African Republic
# Democratic Republic of the Congo (western)
# Republic of the Congo
# Equatorial Guinea
# Gabon
# Niger
# Nigeria
# From P Chan (2020-12-03):
@ -1301,32 +1246,6 @@ Zone Africa/Lagos 0:13:35 - LMT 1905 Jul 1
0:13:35 - LMT 1914 Jan 1
0:30 - +0030 1919 Sep 1
1:00 - WAT
Link Africa/Lagos Africa/Bangui # Central African Republic
Link Africa/Lagos Africa/Brazzaville # Rep. of the Congo
Link Africa/Lagos Africa/Douala # Cameroon
Link Africa/Lagos Africa/Kinshasa # Dem. Rep. of the Congo (west)
Link Africa/Lagos Africa/Libreville # Gabon
Link Africa/Lagos Africa/Luanda # Angola
Link Africa/Lagos Africa/Malabo # Equatorial Guinea
Link Africa/Lagos Africa/Niamey # Niger
Link Africa/Lagos Africa/Porto-Novo # Benin
# Réunion
# See Asia/Dubai.
#
# The Crozet Islands also observe Réunion time; see the 'antarctica' file.
# Rwanda
# See Africa/Maputo.
# St Helena
# See Africa/Abidjan.
# The other parts of the St Helena territory are similar:
# Tristan da Cunha: on GMT, say Whitman and the CIA
# Ascension: on GMT, say the USNO (1995-12-21) and the CIA
# Gough (scientific station since 1955; sealers wintered previously):
# on GMT, says the CIA
# Inaccessible, Nightingale: uninhabited
# São Tomé and Príncipe
@ -1355,19 +1274,10 @@ Zone Africa/Sao_Tome 0:26:56 - LMT 1884
1:00 - WAT 2019 Jan 1 02:00
0:00 - GMT
# Senegal
# See Africa/Abidjan.
# Seychelles
# See Asia/Dubai.
# Sierra Leone
# See Africa/Abidjan.
# Somalia
# See Africa/Nairobi.
# Eswatini (Swaziland)
# Lesotho
# South Africa
# Rule NAME FROM TO - 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 -
@ -1375,8 +1285,6 @@ Rule SA 1943 1944 - Mar Sun>=15 2:00 0 -
Zone Africa/Johannesburg 1:52:00 - LMT 1892 Feb 8
1:30 - SAST 1903 Mar
2:00 SA SAST
Link Africa/Johannesburg Africa/Maseru # Lesotho
Link Africa/Johannesburg Africa/Mbabane # Eswatini
#
# Marion and Prince Edward Is
# scientific station since 1947
@ -1425,12 +1333,6 @@ Zone Africa/Juba 2:06:28 - LMT 1931
3:00 - EAT 2021 Feb 1 00:00
2:00 - CAT
# Tanzania
# See Africa/Nairobi.
# Togo
# See Africa/Abidjan.
# Tunisia
# From Gwillim Law (2005-04-30):
@ -1528,10 +1430,3 @@ Rule Tunisia 2006 2008 - Oct lastSun 2:00s 0 -
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
# Uganda
# See Africa/Nairobi.
# Zambia
# Zimbabwe
# See Africa/Maputo.

2
antarctica
View File

@ -306,4 +306,4 @@ Zone Antarctica/Rothera 0 - -00 1976 Dec 1
# we have to go around and set them back 5 minutes or so.
# Maybe if we let them run fast all of the time, we'd get to leave here sooner!!
#
# See 'australasia' for Antarctica/McMurdo.
# See Pacific/Auckland.

69
asia
View File

@ -149,9 +149,6 @@ Zone Asia/Baku 3:19:24 - LMT 1924 May 2
4:00 EUAsia +04/+05 1997
4:00 Azer +04/+05
# Bahrain
# See Asia/Qatar.
# Bangladesh
# From Alexander Krivenyshev (2009-05-13):
# According to newspaper Asian Tribune (May 6, 2009) Bangladesh may introduce
@ -254,10 +251,8 @@ Zone Indian/Chagos 4:49:40 - LMT 1907
5:00 - +05 1996
6:00 - +06
# Brunei
# See Asia/Kuching.
# Burma / Myanmar
# Cocos (Keeling) Islands
# Myanmar (Burma)
# Milne says 6:24:40 was the meridian of the time ball observatory at Rangoon.
@ -273,11 +268,6 @@ Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoon
6:30 - +0630 1942 May
9:00 - +09 1945 May 3
6:30 - +0630
Link Asia/Yangon Indian/Cocos
# Cambodia
# See Asia/Bangkok.
# China
@ -665,10 +655,9 @@ Zone Asia/Shanghai 8:05:43 - LMT 1901
8:00 PRC C%sT
# Xinjiang time, used by many in western China; represented by Ürümqi / Ürümchi
# / Wulumuqi. (Please use Asia/Shanghai if you prefer Beijing time.)
# Vostok base in Antarctica matches this since 1970.
Zone Asia/Urumqi 5:50:20 - LMT 1928
6:00 - +06
Link Asia/Urumqi Antarctica/Vostok
# Hong Kong
@ -1172,10 +1161,6 @@ Zone Asia/Famagusta 2:15:48 - LMT 1921 Nov 14
3:00 - +03 2017 Oct 29 1:00u
2:00 EUAsia EE%sT
# Classically, Cyprus belongs to Asia; e.g. see Herodotus, Histories, I.72.
# However, for various reasons many users expect to find it under Europe.
Link Asia/Nicosia Europe/Nicosia
# Georgia
# From Paul Eggert (1994-11-19):
# Today's _Economist_ (p 60) reports that Georgia moved its clocks forward
@ -2704,14 +2689,6 @@ Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1
8:30 - KST 2018 May 4 23:30
9:00 - KST
###############################################################################
# Kuwait
# See Asia/Riyadh.
# Laos
# See Asia/Bangkok.
# Lebanon
# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
@ -2743,7 +2720,9 @@ Rule Lebanon 1999 max - Oct lastSun 0:00 0 -
Zone Asia/Beirut 2:22:00 - LMT 1880
2:00 Lebanon EE%sT
# Malaysia
# Brunei
# Malaysia (eastern)
#
# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 -
Rule NBorneo 1935 1941 - Dec 14 0:00 0 -
@ -2760,14 +2739,12 @@ Zone Asia/Kuching 7:21:20 - LMT 1926 Mar
8:00 NBorneo +08/+0820 1942 Feb 16
9:00 - +09 1945 Sep 12
8:00 - +08
Link Asia/Kuching Asia/Brunei
# Maldives
# 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
Link Indian/Maldives Indian/Kerguelen
# Mongolia
@ -2930,9 +2907,6 @@ Zone Asia/Kathmandu 5:41:16 - LMT 1920
5:30 - +0530 1986
5:45 - +0545
# Oman
# See Asia/Dubai.
# Pakistan
# From Rives McDow (2002-03-13):
@ -3543,14 +3517,18 @@ Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
9:00 - JST 1944 Nov
8:00 Phil P%sT
# Bahrain
# Qatar
# 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
Link Asia/Qatar Asia/Bahrain
# Kuwait
# Saudi Arabia
# Yemen
#
# Japan's year-round bases in Antarctica match this since 1970.
#
# From Paul Eggert (2018-08-29):
# Time in Saudi Arabia and other countries in the Arabian peninsula was not
@ -3595,9 +3573,6 @@ Link Asia/Qatar Asia/Bahrain
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14
3:00 - +03
Link Asia/Riyadh Antarctica/Syowa
Link Asia/Riyadh Asia/Aden # Yemen
Link Asia/Riyadh Asia/Kuwait
# Singapore
# taken from Mok Ly Yng (2003-10-30)
@ -3612,7 +3587,6 @@ Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1
9:00 - +09 1945 Sep 12
7:30 - +0730 1982 Jan 1
8:00 - +08
Link Asia/Singapore Asia/Kuala_Lumpur
# Spratly Is
# no information
@ -3858,14 +3832,15 @@ Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2
5:00 1:00 +06 1991 Sep 9 2:00s
5:00 - +05
# Cambodia
# Christmas I
# Laos
# Thailand
# Vietnam (northern)
# 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
Link Asia/Bangkok Asia/Phnom_Penh # Cambodia
Link Asia/Bangkok Asia/Vientiane # Laos
Link Asia/Bangkok Indian/Christmas
# Turkmenistan
# From Shanks & Pottenger.
@ -3876,13 +3851,15 @@ Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad
4:00 RussiaAsia +04/+05 1992 Jan 19 2:00
5:00 - +05
# Oman
# Réunion
# Seychelles
# United Arab Emirates
#
# The Crozet Is also observe Réunion time; see the 'antarctica' file.
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Asia/Dubai 3:41:12 - LMT 1920
4:00 - +04
Link Asia/Dubai Asia/Muscat # Oman
Link Asia/Dubai Indian/Mahe
Link Asia/Dubai Indian/Reunion
# Uzbekistan
# Byalokoz 1919 says Uzbekistan was 4:27:53.
@ -3902,7 +3879,7 @@ Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2
5:00 RussiaAsia +05/+06 1992
5:00 - +05
# Vietnam
# Vietnam (southern)
# From Paul Eggert (2014-10-04):
# Milne gives 7:16:56 for the meridian of Saigon in 1899, as being
@ -3976,7 +3953,3 @@ Zone Asia/Ho_Chi_Minh 7:06:30 - LMT 1906 Jul 1
# For timestamps in north Vietnam back to 1970 (the tzdb cutoff),
# use Asia/Bangkok; see the VN entries in the file zone1970.tab.
# For timestamps before 1970, see Asia/Hanoi in the file 'backzone'.
# Yemen
# See Asia/Riyadh.

58
australasia
View File

@ -251,13 +251,6 @@ Zone Antarctica/Macquarie 0 - -00 1899 Nov
10:00 1:00 AEDT 2011
10:00 AT AE%sT
# Christmas
# See Asia/Bangkok.
# Cocos (Keeling) Is
# See Asia/Yangon.
# Fiji
# Milne gives 11:55:44 for Suva.
@ -393,8 +386,14 @@ Zone Antarctica/Macquarie 0 - -00 1899 Nov
# concerned shifting arrival and departure times, which may look like a simple
# thing but requires some significant logistical adjustments domestically and
# internationally."
# Assume for now that DST will resume with the recent pre-2020 rules for the
# 2022/2023 season.
# From Shalvin Narayan (2022-10-27):
# Please note that there will not be any daylight savings time change
# in Fiji for 2022-2023....
# https://www.facebook.com/FijianGovernment/posts/pfbid0mmWVTYmTibn66ybpFda75pDcf34SSpoSaskJW5gXwaKo5Sgc7273Q4fXWc6kQV6Hl
#
# From Paul Eggert (2022-10-27):
# For now, assume DST is suspended indefinitely.
# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
Rule Fiji 1998 1999 - Nov Sun>=1 2:00 1:00 -
@ -409,8 +408,6 @@ Rule Fiji 2014 2018 - Nov Sun>=1 2:00 1:00 -
Rule Fiji 2015 2021 - Jan Sun>=12 3:00 0 -
Rule Fiji 2019 only - Nov Sun>=8 2:00 1:00 -
Rule Fiji 2020 only - Dec 20 2:00 1:00 -
Rule Fiji 2022 max - Nov Sun>=8 2:00 1:00 -
Rule Fiji 2023 max - Jan Sun>=12 3:00 0 -
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Fiji 11:55:44 - LMT 1915 Oct 26 # Suva
12:00 Fiji +12/+13
@ -426,7 +423,9 @@ Zone Pacific/Tahiti -9:58:16 - LMT 1912 Oct # Papeete
# Clipperton (near North America) is administered from French Polynesia;
# it is uninhabited.
# Guam
# N Mariana Is
# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
# http://guamlegislature.com/Public_Laws_5th/PL05-025.pdf
@ -466,17 +465,20 @@ Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31
9:00 - +09 1944 Jul 31
10:00 Guam G%sT 2000 Dec 23
10:00 - ChST # Chamorro Standard Time
Link Pacific/Guam Pacific/Saipan # N Mariana Is
# Kiribati
# Kiribati (Gilbert Is)
# Marshall Is
# Tuvalu
# Wake
# Wallis & Futuna
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki
12:00 - +12
Link Pacific/Tarawa Pacific/Funafuti
Link Pacific/Tarawa Pacific/Majuro
Link Pacific/Tarawa Pacific/Wake
Link Pacific/Tarawa Pacific/Wallis
# Kiribati (except Gilbert Is)
# See Pacific/Tarawa for the Gilbert Is.
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Kanton 0 - -00 1937 Aug 31
-12:00 - -12 1979 Oct
-11:00 - -11 1994 Dec 31
@ -486,9 +488,6 @@ Zone Pacific/Kiritimati -10:29:20 - LMT 1901
-10:00 - -10 1994 Dec 31
14:00 - +14
# N Mariana Is
# See Pacific/Guam.
# Marshall Is
# See Pacific/Tarawa for most locations.
# Zone NAME STDOFF RULES FORMAT [UNTIL]
@ -538,6 +537,7 @@ Zone Pacific/Noumea 11:05:48 - LMT 1912 Jan 13 # Nouméa
###############################################################################
# New Zealand
# McMurdo Station and Scott Base in Antarctica use Auckland time.
# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
Rule NZ 1927 only - Nov 6 2:00 1:00 S
@ -573,7 +573,6 @@ Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 -
Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2
11:30 NZ NZ%sT 1946 Jan 1
12:00 NZ NZ%sT
Link Pacific/Auckland Antarctica/McMurdo
Zone Pacific/Chatham 12:13:48 - LMT 1868 Nov 2
12:15 - +1215 1946 Jan 1
@ -672,8 +671,6 @@ Zone Pacific/Palau -15:02:04 - LMT 1844 Dec 31 # Koror
Zone Pacific/Port_Moresby 9:48:40 - LMT 1880
9:48:32 - PMMT 1895 # Port Moresby Mean Time
10:00 - +10
Link Pacific/Port_Moresby Antarctica/DumontDUrville
Link Pacific/Port_Moresby Pacific/Chuuk
#
# From Paul Eggert (2014-10-13):
# Base the Bougainville entry on the Arawa-Kieta region, which appears to have
@ -706,10 +703,10 @@ Zone Pacific/Pitcairn -8:40:20 - LMT 1901 # Adamstown
-8:00 - -08
# American Samoa
# Midway
Zone Pacific/Pago_Pago 12:37:12 - LMT 1892 Jul 5
-11:22:48 - LMT 1911
-11:00 - SST # S=Samoa
Link Pacific/Pago_Pago Pacific/Midway # in US minor outlying islands
# Samoa (formerly and also known as Western Samoa)
@ -801,7 +798,6 @@ Zone Pacific/Apia 12:33:04 - LMT 1892 Jul 5
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara
11:00 - +11
Link Pacific/Guadalcanal Pacific/Pohnpei
# Tokelau
#
@ -841,9 +837,6 @@ Zone Pacific/Tongatapu 12:19:12 - LMT 1945 Sep 10
13:00 - +13 1999
13:00 Tonga +13/+14
# Tuvalu
# See Pacific/Tarawa.
# US minor outlying islands
@ -894,15 +887,9 @@ Zone Pacific/Tongatapu 12:19:12 - LMT 1945 Sep 10
# Kingman
# uninhabited
# Midway
# See Pacific/Pago_Pago.
# Palmyra
# uninhabited since World War II; was probably like Pacific/Kiritimati
# Wake
# See Pacific/Tarawa.
# Vanuatu
@ -939,9 +926,6 @@ Rule Vanuatu 1992 only - Oct Sat>=22 24:00 1:00 -
Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
11:00 Vanuatu +11/+12
# Wallis and Futuna
# See Pacific/Tarawa.
###############################################################################
# NOTES

291
backward
View File

@ -4,7 +4,7 @@
# 2009-05-17 by Arthur David Olson.
# This file provides links from old or merged timezone names to current ones.
# Many names changed in late 1993, and many merged names moved here
# Many names changed in 1993 and in 1995, and many merged names moved here
# in the period from 2013 through 2022. Several of these names are
# also present in the file 'backzone', which has data important only
# for pre-1970 timestamps and so is out of scope for tzdb proper.
@ -13,50 +13,24 @@
# building with 'make BACKWARD=', in practice downstream users
# typically use this file for backward compatibility.
# Link TARGET LINK-NAME
Link Africa/Nairobi Africa/Asmera
Link Africa/Abidjan Africa/Timbuktu
Link America/Argentina/Catamarca America/Argentina/ComodRivadavia
Link America/Adak America/Atka
Link America/Argentina/Buenos_Aires America/Buenos_Aires
Link America/Argentina/Catamarca America/Catamarca
Link America/Panama 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
Link America/Kentucky/Louisville America/Louisville
Link America/Argentina/Mendoza America/Mendoza
Link America/Toronto America/Montreal
Link America/Rio_Branco America/Porto_Acre
Link America/Argentina/Cordoba America/Rosario
Link America/Tijuana America/Santa_Isabel
Link America/Denver America/Shiprock
Link America/Puerto_Rico America/Virgin
Link Pacific/Auckland Antarctica/South_Pole
Link Asia/Ashgabat Asia/Ashkhabad
Link Asia/Kolkata Asia/Calcutta
Link Asia/Shanghai Asia/Chongqing
Link Asia/Shanghai Asia/Chungking
Link Asia/Dhaka Asia/Dacca
Link Asia/Shanghai Asia/Harbin
Link Asia/Urumqi Asia/Kashgar
Link Asia/Kathmandu Asia/Katmandu
Link Asia/Macau Asia/Macao
Link Asia/Yangon Asia/Rangoon
Link Asia/Ho_Chi_Minh Asia/Saigon
Link Asia/Jerusalem Asia/Tel_Aviv
Link Asia/Thimphu Asia/Thimbu
Link Asia/Makassar Asia/Ujung_Pandang
Link Asia/Ulaanbaatar Asia/Ulan_Bator
Link Atlantic/Faroe Atlantic/Faeroe
Link Europe/Berlin Atlantic/Jan_Mayen
Link Australia/Sydney Australia/ACT
Link Australia/Sydney Australia/Canberra
Link Australia/Hobart Australia/Currie
# This file is divided into sections, one for each major reason for a
# backward compatibility link. Each section is sorted by link name.
# A "#= TARGET1" comment labels each link inserted only because some
# .zi parsers (including tzcode through 2022e) mishandle links to links.
# The comment says what the target would be if these parsers were fixed
# so that data could contain links to links. For example, the line
# "Link Australia/Sydney Australia/ACT #= Australia/Canberra" would be
# "Link Australia/Canberra Australia/ACT" were it not that data lines
# refrain from linking to links like Australia/Canberra, which means
# the Australia/ACT line links instead to Australia/Sydney,
# Australia/Canberra's target.
# Pre-1993 naming conventions
# Link TARGET LINK-NAME #= TARGET1
Link Australia/Sydney Australia/ACT #= Australia/Canberra
Link Australia/Lord_Howe Australia/LHI
Link Australia/Sydney Australia/NSW
Link Australia/Darwin Australia/North
@ -66,7 +40,7 @@ Link Australia/Hobart Australia/Tasmania
Link Australia/Melbourne Australia/Victoria
Link Australia/Perth Australia/West
Link Australia/Broken_Hill Australia/Yancowinna
Link America/Rio_Branco Brazil/Acre
Link America/Rio_Branco Brazil/Acre #= America/Porto_Acre
Link America/Noronha Brazil/DeNoronha
Link America/Sao_Paulo Brazil/East
Link America/Manaus Brazil/West
@ -86,20 +60,36 @@ Link Pacific/Easter Chile/EasterIsland
Link America/Havana Cuba
Link Africa/Cairo Egypt
Link Europe/Dublin Eire
# Vanguard section, for most .zi parsers.
#Link GMT Etc/GMT
#Link GMT Etc/GMT+0
#Link GMT Etc/GMT-0
#Link GMT Etc/GMT0
#Link GMT Etc/Greenwich
# Rearguard section, for TZUpdater 2.3.2 and earlier.
Link Etc/GMT Etc/GMT+0
Link Etc/GMT Etc/GMT-0
Link Etc/GMT Etc/GMT0
Link Etc/GMT Etc/Greenwich
# End of rearguard section.
Link Etc/UTC Etc/UCT
Link Europe/London Europe/Belfast
Link Europe/Kyiv Europe/Kiev
Link Europe/Chisinau Europe/Tiraspol
Link Europe/Kyiv Europe/Uzhgorod
Link Europe/Kyiv Europe/Zaporozhye
Link Etc/UTC Etc/Universal
Link Etc/UTC Etc/Zulu
Link Europe/London GB
Link Europe/London GB-Eire
# Vanguard section, for most .zi parsers.
#Link GMT GMT+0
#Link GMT GMT-0
#Link GMT GMT0
#Link GMT Greenwich
# Rearguard section, for TZUpdater 2.3.2 and earlier.
Link Etc/GMT GMT+0
Link Etc/GMT GMT-0
Link Etc/GMT GMT0
Link Etc/GMT Greenwich
# End of rearguard section.
Link Asia/Hong_Kong Hongkong
Link Africa/Abidjan Iceland
Link Africa/Abidjan Iceland #= Atlantic/Reykjavik
Link Asia/Tehran Iran
Link Asia/Jerusalem Israel
Link America/Jamaica Jamaica
@ -111,14 +101,8 @@ Link America/Mazatlan Mexico/BajaSur
Link America/Mexico_City Mexico/General
Link Pacific/Auckland NZ
Link Pacific/Chatham NZ-CHAT
Link America/Denver Navajo
Link America/Denver Navajo #= America/Shiprock
Link Asia/Shanghai PRC
Link Pacific/Kanton Pacific/Enderbury
Link Pacific/Honolulu Pacific/Johnston
Link Pacific/Guadalcanal Pacific/Ponape
Link Pacific/Pago_Pago Pacific/Samoa
Link Pacific/Port_Moresby Pacific/Truk
Link Pacific/Port_Moresby Pacific/Yap
Link Europe/Warsaw Poland
Link Europe/Lisbon Portugal
Link Asia/Taipei ROC
@ -142,3 +126,192 @@ Link Etc/UTC UTC
Link Etc/UTC Universal
Link Europe/Moscow W-SU
Link Etc/UTC Zulu
# Two-part names that were renamed mostly to three-part names in 1995
# Link TARGET LINK-NAME #= TARGET1
Link America/Argentina/Buenos_Aires America/Buenos_Aires
Link America/Argentina/Catamarca America/Catamarca
Link America/Argentina/Cordoba America/Cordoba
Link America/Indiana/Indianapolis America/Indianapolis
Link America/Argentina/Jujuy America/Jujuy
Link America/Indiana/Knox America/Knox_IN
Link America/Kentucky/Louisville America/Louisville
Link America/Argentina/Mendoza America/Mendoza
Link America/Puerto_Rico America/Virgin #= America/St_Thomas
Link Pacific/Pago_Pago Pacific/Samoa
# Pre-2013 practice, which typically had a Zone per zone.tab line
# Link TARGET LINK-NAME
Link Africa/Abidjan Africa/Accra
Link Africa/Nairobi Africa/Addis_Ababa
Link Africa/Nairobi Africa/Asmara
Link Africa/Abidjan Africa/Bamako
Link Africa/Lagos Africa/Bangui
Link Africa/Abidjan Africa/Banjul
Link Africa/Maputo Africa/Blantyre
Link Africa/Lagos Africa/Brazzaville
Link Africa/Maputo Africa/Bujumbura
Link Africa/Abidjan Africa/Conakry
Link Africa/Abidjan Africa/Dakar
Link Africa/Nairobi Africa/Dar_es_Salaam
Link Africa/Nairobi Africa/Djibouti
Link Africa/Lagos Africa/Douala
Link Africa/Abidjan Africa/Freetown
Link Africa/Maputo Africa/Gaborone
Link Africa/Maputo Africa/Harare
Link Africa/Nairobi Africa/Kampala
Link Africa/Maputo Africa/Kigali
Link Africa/Lagos Africa/Kinshasa
Link Africa/Lagos Africa/Libreville
Link Africa/Abidjan Africa/Lome
Link Africa/Lagos Africa/Luanda
Link Africa/Maputo Africa/Lubumbashi
Link Africa/Maputo Africa/Lusaka
Link Africa/Lagos Africa/Malabo
Link Africa/Johannesburg Africa/Maseru
Link Africa/Johannesburg Africa/Mbabane
Link Africa/Nairobi Africa/Mogadishu
Link Africa/Lagos Africa/Niamey
Link Africa/Abidjan Africa/Nouakchott
Link Africa/Abidjan Africa/Ouagadougou
Link Africa/Lagos Africa/Porto-Novo
Link America/Puerto_Rico America/Anguilla
Link America/Puerto_Rico America/Antigua
Link America/Puerto_Rico America/Aruba
Link America/Panama America/Atikokan
Link America/Puerto_Rico America/Blanc-Sablon
Link America/Panama America/Cayman
Link America/Phoenix America/Creston
Link America/Puerto_Rico America/Curacao
Link America/Puerto_Rico America/Dominica
Link America/Puerto_Rico America/Grenada
Link America/Puerto_Rico America/Guadeloupe
Link America/Puerto_Rico America/Kralendijk
Link America/Puerto_Rico America/Lower_Princes
Link America/Puerto_Rico America/Marigot
Link America/Puerto_Rico America/Montserrat
Link America/Toronto America/Nassau
Link America/Puerto_Rico America/Port_of_Spain
Link America/Puerto_Rico America/St_Barthelemy
Link America/Puerto_Rico America/St_Kitts
Link America/Puerto_Rico America/St_Lucia
Link America/Puerto_Rico America/St_Thomas
Link America/Puerto_Rico America/St_Vincent
Link America/Puerto_Rico America/Tortola
Link Pacific/Port_Moresby Antarctica/DumontDUrville
Link Pacific/Auckland Antarctica/McMurdo
Link Asia/Riyadh Antarctica/Syowa
Link Asia/Urumqi Antarctica/Vostok
Link Europe/Berlin Arctic/Longyearbyen
Link Asia/Riyadh Asia/Aden
Link Asia/Qatar Asia/Bahrain
Link Asia/Kuching Asia/Brunei
Link Asia/Singapore Asia/Kuala_Lumpur
Link Asia/Riyadh Asia/Kuwait
Link Asia/Dubai Asia/Muscat
Link Asia/Bangkok Asia/Phnom_Penh
Link Asia/Bangkok Asia/Vientiane
Link Africa/Abidjan Atlantic/Reykjavik
Link Africa/Abidjan Atlantic/St_Helena
Link Europe/Brussels Europe/Amsterdam
Link Europe/Prague Europe/Bratislava
Link Europe/Zurich Europe/Busingen
Link Europe/Berlin Europe/Copenhagen
Link Europe/London Europe/Guernsey
Link Europe/London Europe/Isle_of_Man
Link Europe/London Europe/Jersey
Link Europe/Belgrade Europe/Ljubljana
Link Europe/Brussels Europe/Luxembourg
Link Europe/Helsinki Europe/Mariehamn
Link Europe/Paris Europe/Monaco
Link Europe/Berlin Europe/Oslo
Link Europe/Belgrade Europe/Podgorica
Link Europe/Rome Europe/San_Marino
Link Europe/Belgrade Europe/Sarajevo
Link Europe/Belgrade Europe/Skopje
Link Europe/Berlin Europe/Stockholm
Link Europe/Zurich Europe/Vaduz
Link Europe/Rome Europe/Vatican
Link Europe/Belgrade Europe/Zagreb
Link Africa/Nairobi Indian/Antananarivo
Link Asia/Bangkok Indian/Christmas
Link Asia/Yangon Indian/Cocos
Link Africa/Nairobi Indian/Comoro
Link Indian/Maldives Indian/Kerguelen
Link Asia/Dubai Indian/Mahe
Link Africa/Nairobi Indian/Mayotte
Link Asia/Dubai Indian/Reunion
Link Pacific/Port_Moresby Pacific/Chuuk
Link Pacific/Tarawa Pacific/Funafuti
Link Pacific/Tarawa Pacific/Majuro
Link Pacific/Pago_Pago Pacific/Midway
Link Pacific/Guadalcanal Pacific/Pohnpei
Link Pacific/Guam Pacific/Saipan
Link Pacific/Tarawa Pacific/Wake
Link Pacific/Tarawa Pacific/Wallis
# Non-zone.tab locations with timestamps since 1970 that duplicate
# those of an existing location
# Link TARGET LINK-NAME
Link Africa/Abidjan Africa/Timbuktu
Link America/Argentina/Catamarca America/Argentina/ComodRivadavia
Link America/Adak America/Atka
Link America/Panama America/Coral_Harbour
Link America/Tijuana America/Ensenada
Link America/Indiana/Indianapolis America/Fort_Wayne
Link America/Toronto America/Montreal
Link America/Toronto America/Nipigon
Link America/Rio_Branco America/Porto_Acre
Link America/Winnipeg America/Rainy_River
Link America/Argentina/Cordoba America/Rosario
Link America/Tijuana America/Santa_Isabel
Link America/Denver America/Shiprock
Link America/Toronto America/Thunder_Bay
Link Pacific/Auckland Antarctica/South_Pole
Link Asia/Shanghai Asia/Chongqing
Link Asia/Shanghai Asia/Harbin
Link Asia/Urumqi Asia/Kashgar
Link Asia/Jerusalem Asia/Tel_Aviv
Link Europe/Berlin Atlantic/Jan_Mayen
Link Australia/Sydney Australia/Canberra
Link Australia/Hobart Australia/Currie
Link Europe/London Europe/Belfast
Link Europe/Chisinau Europe/Tiraspol
Link Europe/Kyiv Europe/Uzhgorod
Link Europe/Kyiv Europe/Zaporozhye
Link Pacific/Kanton Pacific/Enderbury
Link Pacific/Honolulu Pacific/Johnston
Link Pacific/Port_Moresby Pacific/Yap
# Alternate names for the same location
# Link TARGET LINK-NAME #= TARGET1
Link Africa/Nairobi Africa/Asmera #= Africa/Asmara
Link America/Nuuk America/Godthab
Link Asia/Ashgabat Asia/Ashkhabad
Link Asia/Kolkata Asia/Calcutta
Link Asia/Shanghai Asia/Chungking #= Asia/Chongqing
Link Asia/Dhaka Asia/Dacca
# Istanbul is in both continents.
Link Europe/Istanbul Asia/Istanbul
Link Asia/Kathmandu Asia/Katmandu
Link Asia/Macau Asia/Macao
Link Asia/Yangon Asia/Rangoon
Link Asia/Ho_Chi_Minh Asia/Saigon
Link Asia/Thimphu Asia/Thimbu
Link Asia/Makassar Asia/Ujung_Pandang
Link Asia/Ulaanbaatar Asia/Ulan_Bator
Link Atlantic/Faroe Atlantic/Faeroe
Link Europe/Kyiv Europe/Kiev
# Classically, Cyprus is in Asia; e.g. see Herodotus, Histories, I.72.
# However, for various reasons many users expect to find it under Europe.
Link Asia/Nicosia Europe/Nicosia
Link Pacific/Guadalcanal Pacific/Ponape #= Pacific/Pohnpei
Link Pacific/Port_Moresby Pacific/Truk #= Pacific/Chuuk

69
backzone
View File

@ -739,6 +739,17 @@ Zone America/Nassau -5:09:30 - LMT 1912 Mar 2
-5:00 Bahamas E%sT 1976
-5:00 US E%sT
# Canada
# From Chris Walton (2022-10-15):
# I would also like to see America/Nipigon and America/Rainy_River converted
# into link entries because I have zero faith in the current Shanks based data.
# From Paul Eggert (2022-10-15):
# These are now links in the primary data. Also see America/Thunder_Bay.
Zone America/Nipigon -5:53:04 - LMT 1895
-5:00 Canada E%sT 1940 Sep 29
-5:00 1:00 EDT 1942 Feb 9 2:00s
-5:00 Canada E%sT
# United States
#
# From Paul Eggert (2018-03-18):
@ -769,6 +780,17 @@ Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
Link America/Port_of_Spain America/Marigot
Link America/Port_of_Spain America/St_Barthelemy
# Canada
# From Chris Walton (2022-10-15):
# I would also like to see America/Nipigon and America/Rainy_River converted
# into link entries because I have zero faith in the current Shanks based data.
# From Paul Eggert (2022-10-15):
# These are now links in the primary data. Also see America/Thunder_Bay.
Zone America/Rainy_River -6:18:16 - LMT 1895
-6:00 Canada C%sT 1940 Sep 29
-6:00 1:00 CDT 1942 Feb 9 2:00s
-6:00 Canada C%sT
# Argentina
# This entry was intended for the following areas, but has been superseded by
# more detailed zones.
@ -802,6 +824,53 @@ Zone America/St_Vincent -4:04:56 - LMT 1890 # Kingstown
-4:04:56 - KMT 1912 # Kingstown Mean Time
-4:00 - AST
# Canada
#
# From Paul Eggert (2003-07-27):
# Willett (1914-03) writes (p. 17) "In the Cities of Fort William, and
# Port Arthur, Ontario, the principle of the Bill has been in
# operation for the past three years, and in the City of Moose Jaw,
# Saskatchewan, for one year."
#
# From David Bryan via Tory Tronrud, Director/Curator,
# Thunder Bay Museum (2003-11-12):
# There is some suggestion, however, that, by-law or not, daylight
# savings time was being practiced in Fort William and Port Arthur
# before 1909.... [I]n 1910, the line between the Eastern and Central
# Time Zones was permanently moved about two hundred miles west to
# include the Thunder Bay area.... When Canada adopted daylight
# savings time in 1916, Fort William and Port Arthur, having done so
# already, did not change their clocks.... During the Second World
# War,... [t]he cities agreed to implement DST during the summer
# months for the remainder of the war years.
#
# 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 Chris Walton (2022-10-15):
# The TZ database currently shows that Thunder Bay has observed daylight
# saving every year from 1970 onwards with the exception of 1973.
# Back in July I raised some doubts on this mailing list about the 1973 data.
# I now have more proof that it is wrong.
# [attached Chronicle-Journal front pages, 1973-04-28 and 1973-10-27]
#
# From Paul Eggert (2022-10-15):
# This is now a link in the primary data. The following entry is
# from Shanks & Pottenger, with corrections as noted above.
#
Zone America/Thunder_Bay -5:57:00 - LMT 1895
-6:00 - CST 1910
-5:00 - EST 1942
-5:00 Canada E%sT 1970
-5:00 Toronto E%sT 1974
-5:00 Canada E%sT
# British Virgin Is
Zone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town
-4:00 - AST

24
checklinks.awk
View File

@ -32,6 +32,13 @@ BEGIN {
}
status = 1
}
if (backcheck && FILENAME != backcheck && $3 != "GMT") {
printf "%s: Link should be in '%s'\n", $3, backcheck
status = 1
}
if ($4 == "#=") {
shortcut[$5] = $3
}
used[$2] = 1
defined[$3] = $2
}
@ -39,10 +46,25 @@ BEGIN {
END {
for (tz in used) {
if (defined[tz] != Zone) {
printf "%s: Link to non-zone\n", tz
if (!defined[tz]) {
printf "%s: Link to nowhere\n", tz
status = 1
} else if (DATAFORM != "vanguard") {
printf "%s: Link to link\n", tz
status = 1
}
}
}
for (tz in shortcut) {
if (defined[shortcut[tz]] != defined[tz]) {
target = (!defined[tz] ? "absence" \
: defined[tz] == "\n" ? "zone" \
: defined[tz])
printf "%s: target %s disagrees with %s's target %s\n", \
tz, target, shortcut[tz], defined[shortcut[tz]]
status = 1
}
}
exit status
}

17
etcetera
View File

@ -16,26 +16,23 @@
# Do not use a POSIX TZ setting like TZ='GMT+4', which is four hours
# behind GMT but uses the completely misleading abbreviation "GMT".
Zone Etc/GMT 0 - GMT
# The following zone is used by tzcode functions like gmtime,
# which load the "UTC" file to handle seconds properly.
Zone Etc/UTC 0 - UTC
# Functions like gmtime load the "GMT" file to handle leap seconds properly.
# Vanguard section, which works with most .zi parsers.
#Zone GMT 0 - GMT
# Rearguard section, for TZUpdater 2.3.2 and earlier.
Zone Etc/GMT 0 - GMT
# The following link uses older naming conventions,
# but it belongs here, not in the file 'backward',
# as it is needed for tzcode releases through 2022a,
# where functions like gmtime load "GMT" instead of the "Etc/UTC".
# We want this to work even on installations that omit 'backward'.
Link Etc/GMT GMT
Link Etc/UTC Etc/Universal
Link Etc/UTC Etc/Zulu
Link Etc/GMT Etc/Greenwich
Link Etc/GMT Etc/GMT-0
Link Etc/GMT Etc/GMT+0
Link Etc/GMT Etc/GMT0
# End of rearguard section.
# Be consistent with POSIX TZ settings in the Zone names,
# even though this is the opposite of what many people expect.

202
europe
View File

@ -504,9 +504,6 @@ Zone Europe/London -0:01:15 - LMT 1847 Dec 1
1:00 - BST 1971 Oct 31 2:00u
0:00 GB-Eire %s 1996
0:00 EU GMT/BST
Link Europe/London Europe/Jersey
Link Europe/London Europe/Guernsey
Link Europe/London Europe/Isle_of_Man
# From Paul Eggert (2018-02-15):
# In January 2018 we discovered that the negative SAVE values in the
@ -879,6 +876,8 @@ Zone Europe/Minsk 1:50:16 - LMT 1880
3:00 - +03
# Belgium
# Luxembourg
# Netherlands
#
# From Michael Deckers (2019-08-25):
# The exposition in the web page
@ -961,11 +960,6 @@ Zone Europe/Brussels 0:17:30 - LMT 1880
1:00 C-Eur CE%sT 1944 Sep 3
1:00 Belgium CE%sT 1977
1:00 EU CE%sT
Link Europe/Brussels Europe/Amsterdam
Link Europe/Brussels Europe/Luxembourg
# Bosnia and Herzegovina
# See Europe/Belgrade.
# Bulgaria
#
@ -992,13 +986,11 @@ Zone Europe/Sofia 1:33:16 - LMT 1880
2:00 E-Eur EE%sT 1997
2:00 EU EE%sT
# Croatia
# See Europe/Belgrade.
# Cyprus
# Please see the 'asia' file for Asia/Nicosia.
# Czech Republic / Czechia
# Czech Republic (Czechia)
# Slovakia
#
# From Paul Eggert (2018-04-15):
# The source for Czech data is: Kdy začíná a končí letní čas. 2018-04-15.
@ -1025,15 +1017,14 @@ Zone Europe/Prague 0:57:44 - LMT 1850
# End of rearguard section.
1:00 Czech CE%sT 1979
1:00 EU CE%sT
Link Europe/Prague Europe/Bratislava
# Denmark, Faroe Islands, and Greenland
# For Denmark see Europe/Berlin.
# Faroe Is
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Atlantic/Faroe -0:27:04 - LMT 1908 Jan 11 # Tórshavn
0:00 - WET 1981
0:00 EU WE%sT
# Greenland
#
# From Paul Eggert (2004-10-31):
# During World War II, Germany maintained secret manned weather stations in
@ -1259,11 +1250,8 @@ Zone Europe/Helsinki 1:39:49 - LMT 1878 May 31
2:00 Finland EE%sT 1983
2:00 EU EE%sT
# Åland Is
Link Europe/Helsinki Europe/Mariehamn
# France
# Monaco
# From Ciro Discepolo (2000-12-20):
#
@ -1400,9 +1388,11 @@ Zone Europe/Paris 0:09:21 - LMT 1891 Mar 16
0:00 France WE%sT 1945 Sep 16 3:00
1:00 France CE%sT 1977
1:00 EU CE%sT
Link Europe/Paris Europe/Monaco
# Denmark
# Germany
# Norway
# Sweden
# From Markus Kuhn (1998-09-29):
# The German time zone web site by the Physikalisch-Technische
@ -1420,6 +1410,53 @@ Link Europe/Paris Europe/Monaco
# However, Moscow did not observe daylight saving in 1945, so
# this was equivalent to UT +03, not +04.
# Svalbard & Jan Mayen
# From Steffen Thorsen (2001-05-01):
# Although I could not find it explicitly, it seems that Jan Mayen and
# Svalbard have been using the same time as Norway at least since the
# time they were declared as parts of Norway. Svalbard was declared
# as a part of Norway by law of 1925-07-17 no 11, section 4 and Jan
# Mayen by law of 1930-02-27 no 2, section 2. (From
# <http://www.lovdata.no/all/nl-19250717-011.html> and
# <http://www.lovdata.no/all/nl-19300227-002.html>). The law/regulation
# for normal/standard time in Norway is from 1894-06-29 no 1 (came
# into operation on 1895-01-01) and Svalbard/Jan Mayen seem to be a
# part of this law since 1925/1930. (From
# <http://www.lovdata.no/all/nl-18940629-001.html>) I have not been
# able to find if Jan Mayen used a different time zone (e.g. -0100)
# before 1930. Jan Mayen has only been "inhabited" since 1921 by
# Norwegian meteorologists and maybe used the same time as Norway ever
# since 1921. Svalbard (Arctic/Longyearbyen) has been inhabited since
# before 1895, and therefore probably changed the local time somewhere
# between 1895 and 1925 (inclusive).
# From Paul Eggert (2013-09-04):
#
# Actually, Jan Mayen was never occupied by Germany during World War II,
# so it must have diverged from Oslo time during the war, as Oslo was
# keeping Berlin time.
#
# <https://www.jan-mayen.no/history.htm> says that the meteorologists
# burned down their station in 1940 and left the island, but returned in
# 1941 with a small Norwegian garrison and continued operations despite
# frequent air attacks from Germans. In 1943 the Americans established a
# radiolocating station on the island, called "Atlantic City". Possibly
# the UT offset changed during the war, but I think it unlikely that
# Jan Mayen used German daylight-saving rules.
#
# Svalbard is more complicated, as it was raided in August 1941 by an
# Allied party that evacuated the civilian population to England (says
# <http://www.bartleby.com/65/sv/Svalbard.html>). The Svalbard FAQ
# <http://www.svalbard.com/SvalbardFAQ.html> says that the Germans were
# expelled on 1942-05-14. However, small parties of Germans did return,
# and according to Wilhelm Dege's book "War North of 80" (1954)
# http://www.ucalgary.ca/UofC/departments/UP/1-55238/1-55238-110-2.html
# the German armed forces at the Svalbard weather station code-named
# Haudegen did not surrender to the Allies until September 1945.
#
# All these events predate our cutoff date of 1970, so use Europe/Berlin
# for these regions.
# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
Rule Germany 1946 only - Apr 14 2:00s 1:00 S
@ -1444,11 +1481,6 @@ Zone Europe/Berlin 0:53:28 - LMT 1893 Apr
1:00 SovietZone CE%sT 1946
1:00 Germany CE%sT 1980
1:00 EU CE%sT
Link Europe/Berlin Arctic/Longyearbyen
Link Europe/Berlin Europe/Copenhagen
Link Europe/Berlin Europe/Oslo
Link Europe/Berlin Europe/Stockholm
# Georgia
# Please see the "asia" file for Asia/Tbilisi.
@ -1567,10 +1599,9 @@ Zone Europe/Budapest 1:16:20 - LMT 1890 Nov 1
1:00 Hungary CE%sT 1984
1:00 EU CE%sT
# Iceland
# See Africa/Abidjan.
# Italy
# San Marino
# Vatican City
#
# From Paul Eggert (2001-03-06):
# Sicily and Sardinia each had their own time zones from 1866 to 1893,
@ -1689,13 +1720,6 @@ Zone Europe/Rome 0:49:56 - LMT 1866 Dec 12
1:00 C-Eur CE%sT 1944 Jun 4
1:00 Italy CE%sT 1980
1:00 EU CE%sT
Link Europe/Rome Europe/Vatican
Link Europe/Rome Europe/San_Marino
# Kosovo
# See Europe/Belgrade.
# Latvia
@ -1779,10 +1803,6 @@ Zone Europe/Riga 1:36:34 - LMT 1880
2:00 - EET 2001 Jan 2
2:00 EU EE%sT
# Liechtenstein
# See Europe/Zurich.
# Lithuania
# From Paul Eggert (2016-03-18):
@ -1835,12 +1855,6 @@ Zone Europe/Vilnius 1:41:16 - LMT 1880
2:00 - EET 2003 Jan 1
2:00 EU EE%sT
# Luxembourg
# See Europe/Brussels.
# North Macedonia
# See Europe/Belgrade.
# Malta
#
# From Paul Eggert (2016-10-21):
@ -1936,67 +1950,6 @@ Zone Europe/Chisinau 1:55:20 - LMT 1880
# See Romania commentary for the guessed 1997 transition to EU rules.
2:00 Moldova EE%sT
# Monaco
# See Europe/Paris.
# Montenegro
# See Europe/Belgrade.
# Netherlands
# See Europe/Brussels.
# Norway
# See Europe/Berlin.
# Svalbard & Jan Mayen
# From Steffen Thorsen (2001-05-01):
# Although I could not find it explicitly, it seems that Jan Mayen and
# Svalbard have been using the same time as Norway at least since the
# time they were declared as parts of Norway. Svalbard was declared
# as a part of Norway by law of 1925-07-17 no 11, section 4 and Jan
# Mayen by law of 1930-02-27 no 2, section 2. (From
# <http://www.lovdata.no/all/nl-19250717-011.html> and
# <http://www.lovdata.no/all/nl-19300227-002.html>). The law/regulation
# for normal/standard time in Norway is from 1894-06-29 no 1 (came
# into operation on 1895-01-01) and Svalbard/Jan Mayen seem to be a
# part of this law since 1925/1930. (From
# <http://www.lovdata.no/all/nl-18940629-001.html>) I have not been
# able to find if Jan Mayen used a different time zone (e.g. -0100)
# before 1930. Jan Mayen has only been "inhabited" since 1921 by
# Norwegian meteorologists and maybe used the same time as Norway ever
# since 1921. Svalbard (Arctic/Longyearbyen) has been inhabited since
# before 1895, and therefore probably changed the local time somewhere
# between 1895 and 1925 (inclusive).
# From Paul Eggert (2013-09-04):
#
# Actually, Jan Mayen was never occupied by Germany during World War II,
# so it must have diverged from Oslo time during the war, as Oslo was
# keeping Berlin time.
#
# <https://www.jan-mayen.no/history.htm> says that the meteorologists
# burned down their station in 1940 and left the island, but returned in
# 1941 with a small Norwegian garrison and continued operations despite
# frequent air attacks from Germans. In 1943 the Americans established a
# radiolocating station on the island, called "Atlantic City". Possibly
# the UT offset changed during the war, but I think it unlikely that
# Jan Mayen used German daylight-saving rules.
#
# Svalbard is more complicated, as it was raided in August 1941 by an
# Allied party that evacuated the civilian population to England (says
# <http://www.bartleby.com/65/sv/Svalbard.html>). The Svalbard FAQ
# <http://www.svalbard.com/SvalbardFAQ.html> says that the Germans were
# expelled on 1942-05-14. However, small parties of Germans did return,
# and according to Wilhelm Dege's book "War North of 80" (1954)
# http://www.ucalgary.ca/UofC/departments/UP/1-55238/1-55238-110-2.html
# the German armed forces at the Svalbard weather station code-named
# Haudegen did not surrender to the Allies until September 1945.
#
# All these events predate our cutoff date of 1970, so use Europe/Berlin
# for these regions.
# Poland
# The 1919 dates and times can be found in Tygodnik Urzędowy nr 1 (1919-03-20),
@ -3278,11 +3231,13 @@ Zone Asia/Anadyr 11:49:56 - LMT 1924 May 2
11:00 Russia +11/+12 2011 Mar 27 2:00s
12:00 - +12
# San Marino
# See Europe/Rome.
# Bosnia & Herzegovina
# Croatia
# Kosovo
# Montenegro
# North Macedonia
# Serbia
# Slovenia
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone Europe/Belgrade 1:22:00 - LMT 1884
1:00 - CET 1941 Apr 18 23:00
@ -3294,17 +3249,6 @@ Zone Europe/Belgrade 1:22:00 - LMT 1884
# Shanks & Pottenger don't give as much detail, so go with Koželj.
1:00 - CET 1982 Nov 27
1:00 EU CE%sT
Link Europe/Belgrade Europe/Ljubljana # Slovenia
Link Europe/Belgrade Europe/Podgorica # Montenegro
Link Europe/Belgrade Europe/Sarajevo # Bosnia and Herzegovina
Link Europe/Belgrade Europe/Skopje # North Macedonia
Link Europe/Belgrade Europe/Zagreb # Croatia
# Slovakia
# See Europe/Prague.
# Slovenia
# See Europe/Belgrade.
# Spain
#
@ -3411,10 +3355,11 @@ Zone Atlantic/Canary -1:01:36 - LMT 1922 Mar # Las Palmas de Gran C.
# IATA SSIM (1996-09) says the Canaries switch at 2:00u, not 1:00u.
# Ignore this for now, as the Canaries are part of the EU.
# Sweden
# See Europe/Berlin.
# Germany (Busingen enclave)
# Liechtenstein
# Switzerland
#
# From Howse:
# By the end of the 18th century clocks and watches became commonplace
# and their performance improved enormously. Communities began to keep
@ -3527,9 +3472,6 @@ 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
1:00 EU CE%sT
Link Europe/Zurich Europe/Busingen
Link Europe/Zurich Europe/Vaduz
# Turkey
@ -3734,7 +3676,6 @@ Zone Europe/Istanbul 1:55:52 - LMT 1880
2:00 1:00 EEST 2015 Nov 8 1:00u
2:00 EU EE%sT 2016 Sep 7
3:00 - +03
Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents.
# Ukraine
#
@ -3837,9 +3778,6 @@ Zone Europe/Kyiv 2:02:04 - LMT 1880
2:00 C-Eur EE%sT 1996 May 13
2:00 EU EE%sT
# Vatican City
# See Europe/Rome.
###############################################################################
# One source shows that Bulgaria, Cyprus, Finland, and Greece observe DST from

171
northamerica
View File

@ -829,7 +829,6 @@ Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 19:00u
-7:00 - MST 1967
-7:00 US M%sT 1968 Mar 21
-7:00 - MST
Link America/Phoenix America/Creston
# From Arthur David Olson (1988-02-13):
# A writer from the Inter Tribal Council of Arizona, Inc.,
@ -1603,23 +1602,6 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9
# Ontario
# From Paul Eggert (2006-07-09):
# Shanks & Pottenger write that since 1970 most of Ontario has been like
# Toronto.
# Thunder Bay skipped DST in 1973.
# Many smaller locales did not observe peacetime DST until 1974;
# 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
@ -1640,17 +1622,6 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9
# From Mark Brader (2010-03-06):
#
# Currently the database has:
#
# # Ontario
#
# # From Paul Eggert (2006-07-09):
# # Shanks & Pottenger write that since 1970 most of Ontario has been like
# # Toronto.
# # Thunder Bay skipped DST in 1973.
# # Many smaller locales did not observe peacetime DST until 1974;
# # Nipigon (EST) and Rainy River (CST) are the largest that we know of.
#
# In the (Toronto) Globe and Mail for Saturday, 1955-09-24, in the bottom
# right corner of page 1, it says that Toronto will return to standard
# time at 2 am Sunday morning (which agrees with the database), and that:
@ -1658,10 +1629,8 @@ Zone America/Moncton -4:19:08 - LMT 1883 Dec 9
# The one-hour setback will go into effect throughout most of Ontario,
# except in areas like Windsor which remains on standard time all year.
#
# Windsor is, of course, a lot larger than Nipigon.
#
# I only came across this incidentally. I don't know if Windsor began
# observing DST when Detroit did, or in 1974, or on some other date.
# ... I don't know if Windsor began observing DST when Detroit did,
# or in 1974, or on some other date.
#
# By the way, the article continues by noting that:
#
@ -1743,23 +1712,7 @@ Rule Toronto 1951 1956 - Sep lastSun 2:00 0 S
# Toronto Star, which said that DST was ending 1971-10-31 as usual.
Rule Toronto 1957 1973 - Oct lastSun 2:00 0 S
# From Paul Eggert (2003-07-27):
# Willett (1914-03) writes (p. 17) "In the Cities of Fort William, and
# Port Arthur, Ontario, the principle of the Bill has been in
# operation for the past three years, and in the City of Moose Jaw,
# Saskatchewan, for one year."
# From David Bryan via Tory Tronrud, Director/Curator,
# Thunder Bay Museum (2003-11-12):
# There is some suggestion, however, that, by-law or not, daylight
# savings time was being practiced in Fort William and Port Arthur
# before 1909.... [I]n 1910, the line between the Eastern and Central
# Time Zones was permanently moved about two hundred miles west to
# include the Thunder Bay area.... When Canada adopted daylight
# savings time in 1916, Fort William and Port Arthur, having done so
# already, did not change their clocks.... During the Second World
# War,... [t]he cities agreed to implement DST during the summer
# months for the remainder of the war years.
# The Bahamas match Toronto since 1970.
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/Toronto -5:17:32 - LMT 1895
@ -1768,22 +1721,6 @@ Zone America/Toronto -5:17:32 - LMT 1895
-5:00 Canada E%sT 1946
-5:00 Toronto E%sT 1974
-5:00 Canada E%sT
Link America/Toronto America/Nassau
Zone America/Thunder_Bay -5:57:00 - LMT 1895
-6:00 - CST 1910
-5:00 - EST 1942
-5:00 Canada E%sT 1970
-5:00 Toronto E%sT 1973
-5:00 - EST 1974
-5:00 Canada E%sT
Zone America/Nipigon -5:53:04 - LMT 1895
-5:00 Canada E%sT 1940 Sep 29
-5:00 1:00 EDT 1942 Feb 9 2:00s
-5:00 Canada E%sT
Zone America/Rainy_River -6:18:16 - LMT 1895
-6:00 Canada C%sT 1940 Sep 29
-6:00 1:00 CDT 1942 Feb 9 2:00s
-6:00 Canada C%sT
# For Atikokan see America/Panama.
@ -2616,6 +2553,12 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
# 5- The islands, reefs and keys shall take their timezone from the
# longitude they are located at.
# From Paul Eggert (2022-10-28):
# The new Mexican law was published today:
# https://www.dof.gob.mx/nota_detalle.php?codigo=5670045&fecha=28/10/2022
# This abolishes DST except where US DST rules are observed,
# and in addition changes all of Chihuahua to -06 with no DST.
# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
Rule Mexico 1931 only - May 1 23:00 1:00 D
Rule Mexico 1931 only - Oct 1 0:00 0 S
@ -2631,8 +2574,8 @@ Rule Mexico 1996 2000 - Apr Sun>=1 2:00 1:00 D
Rule Mexico 1996 2000 - Oct lastSun 2:00 0 S
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
Rule Mexico 2002 2022 - Apr Sun>=1 2:00 1:00 D
Rule Mexico 2002 2022 - Oct lastSun 2:00 0 S
# Zone NAME STDOFF RULES FORMAT [UNTIL]
# Quintana Roo; represented by Cancún
Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 6:00u
@ -2685,7 +2628,8 @@ Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 7:00u
-6:00 Mexico C%sT 1998
-6:00 - CST 1998 Apr Sun>=1 3:00
-7:00 Mexico M%sT 2010
-7:00 US M%sT
-7:00 US M%sT 2022 Oct 30 2:00
-6:00 - CST
# Chihuahua (away from US border)
Zone America/Chihuahua -7:04:20 - LMT 1922 Jan 1 7:00u
-7:00 - MST 1927 Jun 10 23:00
@ -2694,7 +2638,8 @@ Zone America/Chihuahua -7:04:20 - LMT 1922 Jan 1 7:00u
-6:00 - CST 1996
-6:00 Mexico C%sT 1998
-6:00 - CST 1998 Apr Sun>=1 3:00
-7:00 Mexico M%sT
-7:00 Mexico M%sT 2022 Oct 30 2:00
-6:00 - CST
# Sonora
Zone America/Hermosillo -7:23:52 - LMT 1922 Jan 1 7:00u
-7:00 - MST 1927 Jun 10 23:00
@ -2792,20 +2737,16 @@ Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 7:00u
# http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010
# It has been moved to the 'backward' file.
#
# From Paul Eggert (2022-10-28):
# Today's new law states that the entire state of Baja California
# follows US DST rules, which agrees with simplifications noted above.
#
#
# Revillagigedo Is
# no information
###############################################################################
# Anguilla
# Antigua and Barbuda
# See America/Puerto_Rico.
# The Bahamas
# See America/Toronto.
# Barbados
# For 1899 Milne gives -3:58:29.2.
@ -3018,12 +2959,6 @@ Zone Atlantic/Bermuda -4:19:18 - LMT 1890 # Hamilton
-4:00 Canada A%sT 1976
-4:00 US A%sT
# Caribbean Netherlands
# See America/Puerto_Rico.
# Cayman Is
# See America/Panama.
# Costa Rica
# Milne gives -5:36:13.3 as San José mean time.
@ -3249,9 +3184,6 @@ Zone America/Havana -5:29:28 - LMT 1890
-5:29:36 - HMT 1925 Jul 19 12:00 # Havana MT
-5:00 Cuba C%sT
# Dominica
# See America/Puerto_Rico.
# Dominican Republic
# From Steffen Thorsen (2000-10-30):
@ -3298,12 +3230,6 @@ Rule Salv 1987 1988 - Sep lastSun 0:00 0 S
Zone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador
-6:00 Salv C%sT
# Grenada
# Guadeloupe
# St Barthélemy
# St Martin (French part)
# See America/Puerto_Rico.
# Guatemala
#
# From Gwillim Law (2006-04-22), after a heads-up from Oscar van Vlijmen:
@ -3489,9 +3415,6 @@ Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
-4:00 1:00 ADT 1980 Sep 28
-4:00 - AST
# Montserrat
# See America/Puerto_Rico.
# Nicaragua
#
# This uses Shanks & Pottenger for times before 2005.
@ -3557,44 +3480,39 @@ Zone America/Managua -5:45:08 - LMT 1890
-5:00 - EST 1997
-6:00 Nic C%sT
# Cayman Is
# Panama
#
# Atikokan and Coral Harbour, Canada, match Panama since 1970.
# 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
Link America/Panama America/Atikokan
Link America/Panama America/Cayman
# Anguilla
# Antigua & Barbuda
# Aruba
# Caribbean Netherlands
# Curaçao
# Dominica
# Grenada
# Guadeloupe
# Montserrat
# Puerto Rico
# St Barthélemy
# St Kitts-Nevis
# Sint Maarten / St Martin
# St Lucia
# St Vincent & the Grenadines
# Trinidad & Tobago
# Virgin Is (UK & US)
#
# There are too many San Juans elsewhere, so we'll use 'Puerto_Rico'.
# 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
-4:00 - AST
Link America/Puerto_Rico America/Anguilla
Link America/Puerto_Rico America/Antigua
Link America/Puerto_Rico America/Aruba
Link America/Puerto_Rico America/Curacao
Link America/Puerto_Rico America/Blanc-Sablon # Quebec (Lower North Shore)
Link America/Puerto_Rico America/Dominica
Link America/Puerto_Rico America/Grenada
Link America/Puerto_Rico America/Guadeloupe
Link America/Puerto_Rico America/Kralendijk # Caribbean Netherlands
Link America/Puerto_Rico America/Lower_Princes # Sint Maarten
Link America/Puerto_Rico America/Marigot # St Martin (French part)
Link America/Puerto_Rico America/Montserrat
Link America/Puerto_Rico America/Port_of_Spain # Trinidad & Tobago
Link America/Puerto_Rico America/St_Barthelemy # St Barthélemy
Link America/Puerto_Rico America/St_Kitts # St Kitts & Nevis
Link America/Puerto_Rico America/St_Lucia
Link America/Puerto_Rico America/St_Thomas # Virgin Islands (US)
Link America/Puerto_Rico America/St_Vincent
Link America/Puerto_Rico America/Tortola # Virgin Islands (UK)
# St Kitts-Nevis
# St Lucia
# See America/Puerto_Rico.
# St Pierre and Miquelon
# There are too many St Pierres elsewhere, so we'll use 'Miquelon'.
@ -3604,12 +3522,6 @@ Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
-3:00 - -03 1987
-3:00 Canada -03/-02
# St Vincent and the Grenadines
# See America/Puerto_Rico.
# Sint Maarten
# See America/Puerto_Rico.
# Turks and Caicos
#
# From Chris Dunn in
@ -3679,11 +3591,6 @@ Zone America/Grand_Turk -4:44:32 - LMT 1890
-4:00 - AST 2018 Mar 11 3:00
-5:00 US E%sT
# British Virgin Is
# US Virgin Is
# See America/Puerto_Rico.
# Local Variables:
# coding: utf-8
# End:

15
southamerica
View File

@ -585,9 +585,6 @@ Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31
-3:00 Arg -03/-02 2008 Oct 18
-3:00 - -03
# Aruba
# See America/Puerto_Rico.
# Bolivia
# Zone NAME STDOFF RULES FORMAT [UNTIL]
Zone America/La_Paz -4:32:36 - LMT 1890
@ -1432,15 +1429,6 @@ Zone America/Bogota -4:56:16 - LMT 1884 Mar 13
# Malpelo, Providencia, San Andres
# no information; probably like America/Bogota
# Curaçao
# See America/Puerto_Rico.
#
# From Arthur David Olson (2011-06-15):
# use links for places with new iso3166 codes.
# The name "Lower Prince's Quarter" is both longer than fourteen characters
# and contains an apostrophe; use "Lower_Princes"....
# From Paul Eggert (2021-09-29):
# These backward-compatibility links now are in the 'northamerica' file.
# Ecuador
#
@ -1756,9 +1744,6 @@ Zone America/Paramaribo -3:40:40 - LMT 1911
-3:30 - -0330 1984 Oct
-3:00 - -03
# Trinidad and Tobago
# See America/Puerto_Rico.
# Uruguay
# From Paul Eggert (1993-11-18):
# Uruguay wins the prize for the strangest peacetime manipulation of the rules.

1
theory.html
View File

@ -329,6 +329,7 @@ still supported.
These legacy names are mostly defined in the file
'<code>etcetera</code>'.
Also, the file '<code>backward</code>' defines the legacy names
'<code>Etc/GMT0</code>', '<code>Etc/GMT-0</code>', '<code>Etc/GMT+0</code>',
'<code>GMT0</code>', '<code>GMT-0</code>' and '<code>GMT+0</code>',
and the file '<code>northamerica</code>' defines the legacy names
'<code>EST5EDT</code>', '<code>CST6CDT</code>',

2
version
View File

@ -1 +1 @@
2022e
2022f

70
ziguard.awk
View File

@ -15,6 +15,9 @@
# after main became rearguard and vanguard became main).
# There is no need to convert rearguard to other forms.
#
# When converting to vanguard form, the output can use the line
# "Zone GMT 0 - GMT" which TZUpdater 2.3.2 mistakenly rejects.
#
# When converting to vanguard form, the output can use negative SAVE
# values.
#
@ -151,6 +154,17 @@ DATAFORM != "main" {
}
}
# In vanguard form, use the line "Zone GMT 0 - GMT" instead of
# "Zone Etc/GMT 0 - GMT" and adjust Link lines accordingly.
# This works around a bug in TZUpdater 2.3.2.
if (/^#?(Zone|Link)[\t ]+(Etc\/)?GMT[\t ]/) {
if (($2 == "GMT") == (DATAFORM == "vanguard")) {
uncomment = in_comment
} else {
comment_out = !in_comment
}
}
if (uncomment) {
sub(/^#/, "")
}
@ -297,6 +311,39 @@ DATAFORM != "main" {
}
}
# Return a link line resulting by changing OLDLINE to link to TARGET
# from LINKNAME, instead of linking to OLDTARGET from LINKNAME.
# Align data columns the same as they were in OLDLINE.
# Also, replace any existing white space followed by comment with COMMENT.
function make_linkline(oldline, target, linkname, oldtarget, comment, \
oldprefix, oldprefixlen, oldtargettabs, \
replsuffix, targettabs)
{
oldprefix = "Link\t" oldtarget "\t"
oldprefixlen = length(oldprefix)
if (substr(oldline, 1, oldprefixlen) == oldprefix) {
# Use tab stops to preserve LINKNAME's column.
replsuffix = substr(oldline, oldprefixlen + 1)
sub(/[\t ]*#.*/, "", replsuffix)
oldtargettabs = int(length(oldtarget) / 8) + 1
targettabs = int(length(target) / 8) + 1
for (; targettabs < oldtargettabs; targettabs++) {
replsuffix = "\t" replsuffix
}
for (; oldtargettabs < targettabs && replsuffix ~ /^\t/; targettabs--) {
replsuffix = substr(replsuffix, 2)
}
} else {
# Odd format line; don't bother lining up its replacement nicely.
replsuffix = linkname
}
return "Link\t" target "\t" replsuffix comment
}
/^Link/ && $4 == "#=" && DATAFORM == "vanguard" {
$0 = make_linkline($0, $5, $3, $2)
}
# If a Link line is followed by a Link or Zone line for the same data, comment
# out the Link line. This can happen if backzone overrides a Link
# with a Zone or a different Link.
@ -306,11 +353,34 @@ DATAFORM != "main" {
/^Link/ {
sub(/^Link/, "#Link", line[linkline[$3]])
linkline[$3] = NR
linktarget[$3] = $2
}
{ line[NR] = $0 }
function cut_link_chains_short( \
l, linkname, t, target)
{
for (linkname in linktarget) {
target = linktarget[linkname]
t = linktarget[target]
if (t) {
# TARGET is itself a link name. Replace the line "Link TARGET LINKNAME"
# with "Link T LINKNAME #= TARGET", where T is at the end of the chain
# of links that LINKNAME points to.
while ((u = linktarget[t])) {
t = u
}
l = linkline[linkname]
line[l] = make_linkline(line[l], t, linkname, target, "\t#= " target)
}
}
}
END {
if (DATAFORM != "vanguard") {
cut_link_chains_short()
}
for (i = 1; i <= NR; i++)
print line[i]
}

3
zone.tab
View File

@ -114,13 +114,10 @@ CA +4606-06447 America/Moncton Atlantic - New Brunswick
CA +5320-06025 America/Goose_Bay Atlantic - Labrador (most areas)
CA +5125-05707 America/Blanc-Sablon AST - QC (Lower North Shore)
CA +4339-07923 America/Toronto Eastern - ON, QC (most areas)
CA +4901-08816 America/Nipigon Eastern - ON, QC (no DST 1967-73)
CA +4823-08915 America/Thunder_Bay Eastern - ON (Thunder Bay)
CA +6344-06828 America/Iqaluit Eastern - NU (most east areas)
CA +6608-06544 America/Pangnirtung Eastern - NU (Pangnirtung)
CA +484531-0913718 America/Atikokan EST - ON (Atikokan); NU (Coral H)
CA +4953-09709 America/Winnipeg Central - ON (west); Manitoba
CA +4843-09434 America/Rainy_River Central - ON (Rainy R, Ft Frances)
CA +744144-0944945 America/Resolute Central - NU (Resolute)
CA +624900-0920459 America/Rankin_Inlet Central - NU (central)
CA +5024-10439 America/Regina CST - SK (most areas)

3
zone1970.tab
View File

@ -102,12 +102,9 @@ CA +4612-05957 America/Glace_Bay Atlantic - NS (Cape Breton)
CA +4606-06447 America/Moncton Atlantic - New Brunswick
CA +5320-06025 America/Goose_Bay Atlantic - Labrador (most areas)
CA,BS +4339-07923 America/Toronto Eastern - ON, QC (most areas), Bahamas
CA +4901-08816 America/Nipigon Eastern - ON, QC (no DST 1967-73)
CA +4823-08915 America/Thunder_Bay Eastern - ON (Thunder Bay)
CA +6344-06828 America/Iqaluit Eastern - NU (most east areas)
CA +6608-06544 America/Pangnirtung Eastern - NU (Pangnirtung)
CA +4953-09709 America/Winnipeg Central - ON (west); Manitoba
CA +4843-09434 America/Rainy_River Central - ON (Rainy R, Ft Frances)
CA +744144-0944945 America/Resolute Central - NU (Resolute)
CA +624900-0920459 America/Rankin_Inlet Central - NU (central)
CA +5024-10439 America/Regina CST - SK (most areas)