Import tzdata 2018a
This commit is contained in:
parent
5d3db21cbc
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/vendor/tzdata/dist/; revision=328053 svn path=/vendor/tzdata/tzdata2018a/; revision=328054; tag=vendor/tzdata/tzdata2018a
156
Makefile
156
Makefile
@ -42,36 +42,63 @@ POSIXRULES= America/New_York
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# Also see TZDEFRULESTRING below, which takes effect only
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# if the time zone files cannot be accessed.
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# Everything gets put in subdirectories of. . .
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TOPDIR= /usr/local
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# Installation locations.
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#
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# The defaults are suitable for Debian, except that if REDO is
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# posix_right or right_posix then files that Debian puts under
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# /usr/share/zoneinfo/posix and /usr/share/zoneinfo/right are instead
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# put under /usr/share/zoneinfo-posix and /usr/share/zoneinfo-leaps,
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# respectively. Problems with the Debian approach are discussed in
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# the commentary for the right_posix rule (below).
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# Destination directory, which can be used for staging.
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# 'make DESTDIR=/stage install' installs under /stage (e.g., to
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# /stage/etc/localtime instead of to /etc/localtime). Files under
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# /stage are not intended to work as-is, but can be copied by hand to
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# the root directory later. If DESTDIR is empty, 'make install' does
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# not stage, but installs directly into production locations.
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DESTDIR =
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# Everything is installed into subdirectories of TOPDIR, and used there.
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# TOPDIR should be empty (meaning the root directory),
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# or a directory name that does not end in "/".
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# TOPDIR should be empty or an absolute name unless you're just testing.
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TOPDIR =
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# The default local time zone is taken from the file TZDEFAULT.
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TZDEFAULT = $(TOPDIR)/etc/localtime
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# The subdirectory containing installed program and data files, and
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# likewise for installed files that can be shared among architectures.
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# These should be relative file names.
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USRDIR = usr
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USRSHAREDIR = $(USRDIR)/share
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# "Compiled" time zone information is placed in the "TZDIR" directory
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# (and subdirectories).
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# Use an absolute path name for TZDIR unless you're just testing the software.
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# TZDIR_BASENAME should not contain "/" and should not be ".", ".." or empty.
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TZDIR_BASENAME= zoneinfo
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TZDIR= $(TOPDIR)/etc/$(TZDIR_BASENAME)
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TZDIR = $(TOPDIR)/$(USRSHAREDIR)/$(TZDIR_BASENAME)
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# Types to try, as an alternative to time_t. int64_t should be first.
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TIME_T_ALTERNATIVES= int64_t int32_t uint32_t uint64_t
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# The "tzselect" and (if you do "make INSTALL") "date" commands go in:
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BINDIR = $(TOPDIR)/$(USRDIR)/bin
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# The "tzselect", "zic", and "zdump" commands get installed in. . .
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# The "zdump" command goes in:
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ZDUMPDIR = $(BINDIR)
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ETCDIR= $(TOPDIR)/etc
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# If you "make INSTALL", the "date" command gets installed in. . .
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BINDIR= $(TOPDIR)/bin
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# The "zic" command goes in:
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ZICDIR = $(TOPDIR)/$(USRDIR)/sbin
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# Manual pages go in subdirectories of. . .
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MANDIR= $(TOPDIR)/man
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MANDIR = $(TOPDIR)/$(USRSHAREDIR)/man
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# Library functions are put in an archive in LIBDIR.
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LIBDIR = $(TOPDIR)/$(USRDIR)/lib
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LIBDIR= $(TOPDIR)/lib
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# Types to try, as an alternative to time_t. int64_t should be first.
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TIME_T_ALTERNATIVES = int64_t int32_t uint32_t uint64_t
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# If you want only POSIX time, with time values interpreted as
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# seconds since the epoch (not counting leap seconds), use
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@ -105,11 +132,14 @@ REDO= posix_right
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TZDATA_TEXT= leapseconds tzdata.zi
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# For backward-compatibility links for old zone names, use
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# BACKWARD= backward
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# If you also want the link US/Pacific-New, even though it is confusing
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# and is planned to be removed from the database eventually, use
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# BACKWARD= backward pacificnew
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# To omit these links, use
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# BACKWARD=
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BACKWARD= backward pacificnew
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BACKWARD= backward
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# If you want out-of-scope and often-wrong data from the file 'backzone', use
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# PACKRATDATA= backzone
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@ -313,7 +343,7 @@ ZFLAGS=
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# How to use zic to install tz binary files.
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ZIC_INSTALL= $(ZIC) -d $(DESTDIR)$(TZDIR) $(LEAPSECONDS)
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ZIC_INSTALL= $(ZIC) -d '$(DESTDIR)$(TZDIR)' $(LEAPSECONDS)
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# The name of a Posix-compliant 'awk' on your system.
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AWK= awk
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@ -341,8 +371,8 @@ SGML_CATALOG_FILES= \
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VALIDATE = nsgmls
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VALIDATE_FLAGS = -s -B -wall -wno-unused-param
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VALIDATE_ENV = \
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SGML_CATALOG_FILES=$(SGML_CATALOG_FILES) \
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SGML_SEARCH_PATH=$(SGML_SEARCH_PATH) \
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SGML_CATALOG_FILES='$(SGML_CATALOG_FILES)' \
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SGML_SEARCH_PATH='$(SGML_SEARCH_PATH)' \
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SP_CHARSET_FIXED=YES \
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SP_ENCODING=UTF-8
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@ -396,7 +426,7 @@ GZIPFLAGS= -9n
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#MAKE= make
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cc= cc
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CC= $(cc) -DTZDIR=\"$(TZDIR)\"
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CC= $(cc) -DTZDIR='"$(TZDIR)"'
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AR= ar
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@ -421,7 +451,7 @@ MANTXTS= newctime.3.txt newstrftime.3.txt newtzset.3.txt \
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date.1.txt
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COMMON= calendars CONTRIBUTING LICENSE Makefile \
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NEWS README theory.html version
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WEB_PAGES= tz-art.htm tz-how-to.html tz-link.htm
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WEB_PAGES= tz-art.html tz-how-to.html tz-link.html
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DOCS= $(MANS) date.1 $(MANTXTS) $(WEB_PAGES)
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PRIMARY_YDATA= africa antarctica asia australasia \
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europe northamerica southamerica
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@ -431,7 +461,7 @@ TDATA= $(YDATA) $(NDATA)
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ZONETABLES= zone1970.tab zone.tab
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TABDATA= iso3166.tab $(TZDATA_TEXT) $(ZONETABLES)
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LEAP_DEPS= leapseconds.awk leap-seconds.list
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TZDATA_ZI_DEPS= zishrink.awk $(TDATA) $(PACKRATDATA)
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TZDATA_ZI_DEPS= zishrink.awk version $(TDATA) $(PACKRATDATA)
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DATA= $(YDATA) $(NDATA) backzone iso3166.tab leap-seconds.list \
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leapseconds yearistype.sh $(ZONETABLES)
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AWK_SCRIPTS= checklinks.awk checktab.awk leapseconds.awk zishrink.awk
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@ -457,7 +487,7 @@ VERSION_DEPS= \
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newctime.3 newstrftime.3 newtzset.3 northamerica \
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pacificnew private.h \
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southamerica strftime.c systemv theory.html \
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time2posix.3 tz-art.htm tz-how-to.html tz-link.htm \
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time2posix.3 tz-art.html tz-how-to.html tz-link.html \
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tzfile.5 tzfile.h tzselect.8 tzselect.ksh \
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workman.sh yearistype.sh \
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zdump.8 zdump.c zic.8 zic.c \
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@ -473,35 +503,41 @@ all: tzselect yearistype zic zdump libtz.a $(TABDATA)
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ALL: all date $(ENCHILADA)
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install: all $(DATA) $(REDO) $(MANS)
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mkdir -p $(DESTDIR)$(ETCDIR) $(DESTDIR)$(TZDIR) \
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$(DESTDIR)$(LIBDIR) \
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$(DESTDIR)$(MANDIR)/man3 $(DESTDIR)$(MANDIR)/man5 \
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$(DESTDIR)$(MANDIR)/man8
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$(ZIC_INSTALL) -l $(LOCALTIME) -p $(POSIXRULES)
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cp -f $(TABDATA) $(DESTDIR)$(TZDIR)/.
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cp tzselect zic zdump $(DESTDIR)$(ETCDIR)/.
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cp libtz.a $(DESTDIR)$(LIBDIR)/.
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$(RANLIB) $(DESTDIR)$(LIBDIR)/libtz.a
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cp -f newctime.3 newtzset.3 $(DESTDIR)$(MANDIR)/man3/.
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cp -f tzfile.5 $(DESTDIR)$(MANDIR)/man5/.
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cp -f tzselect.8 zdump.8 zic.8 $(DESTDIR)$(MANDIR)/man8/.
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mkdir -p '$(DESTDIR)$(BINDIR)' \
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'$(DESTDIR)$(ZDUMPDIR)' '$(DESTDIR)$(ZICDIR)' \
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'$(DESTDIR)$(LIBDIR)' \
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'$(DESTDIR)$(MANDIR)/man3' '$(DESTDIR)$(MANDIR)/man5' \
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'$(DESTDIR)$(MANDIR)/man8'
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$(ZIC_INSTALL) -l $(LOCALTIME) -p $(POSIXRULES) \
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-t '$(DESTDIR)$(TZDEFAULT)'
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cp -f $(TABDATA) '$(DESTDIR)$(TZDIR)/.'
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cp tzselect '$(DESTDIR)$(BINDIR)/.'
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cp zdump '$(DESTDIR)$(ZDUMPDIR)/.'
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cp zic '$(DESTDIR)$(ZICDIR)/.'
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cp libtz.a '$(DESTDIR)$(LIBDIR)/.'
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$(RANLIB) '$(DESTDIR)$(LIBDIR)/libtz.a'
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cp -f newctime.3 newtzset.3 '$(DESTDIR)$(MANDIR)/man3/.'
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cp -f tzfile.5 '$(DESTDIR)$(MANDIR)/man5/.'
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cp -f tzselect.8 zdump.8 zic.8 '$(DESTDIR)$(MANDIR)/man8/.'
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INSTALL: ALL install date.1
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mkdir -p $(DESTDIR)$(BINDIR) $(DESTDIR)$(MANDIR)/man1
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cp date $(DESTDIR)$(BINDIR)/.
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cp -f date.1 $(DESTDIR)$(MANDIR)/man1/.
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mkdir -p '$(DESTDIR)$(BINDIR)' '$(DESTDIR)$(MANDIR)/man1'
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cp date '$(DESTDIR)$(BINDIR)/.'
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cp -f date.1 '$(DESTDIR)$(MANDIR)/man1/.'
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version: $(VERSION_DEPS)
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{ (type git) >/dev/null 2>&1 && \
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V=`git describe --match '[0-9][0-9][0-9][0-9][a-z]*' \
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--abbrev=7 --dirty` || \
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V=$(VERSION); } && \
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V='$(VERSION)'; } && \
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printf '%s\n' "$$V" >$@.out
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mv $@.out $@
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# This file can be tailored by setting BACKWARD, PACKRATDATA, etc.
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tzdata.zi: $(TZDATA_ZI_DEPS)
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LC_ALL=C $(AWK) -f zishrink.awk $(TDATA) $(PACKRATDATA) >$@.out
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version=`sed 1q version` && \
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LC_ALL=C $(AWK) -v version="$$version" -f zishrink.awk \
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$(TDATA) $(PACKRATDATA) >$@.out
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mv $@.out $@
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version.h: version
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@ -529,12 +565,13 @@ leapseconds: $(LEAP_DEPS)
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# Arguments to pass to submakes of install_data.
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# They can be overridden by later submake arguments.
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INSTALLARGS = \
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BACKWARD=$(BACKWARD) \
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DESTDIR=$(DESTDIR) \
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BACKWARD='$(BACKWARD)' \
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DESTDIR='$(DESTDIR)' \
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LEAPSECONDS='$(LEAPSECONDS)' \
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PACKRATDATA='$(PACKRATDATA)' \
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TZDIR=$(TZDIR) \
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YEARISTYPE=$(YEARISTYPE) \
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TZDEFAULT='$(TZDEFAULT)' \
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TZDIR='$(TZDIR)' \
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YEARISTYPE='$(YEARISTYPE)' \
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ZIC='$(ZIC)'
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# 'make install_data' installs one set of tz binary files.
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@ -558,16 +595,16 @@ right_only:
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# You must replace all of $(TZDIR) to switch from not using leap seconds
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# to using them, or vice versa.
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right_posix: right_only
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rm -fr $(DESTDIR)$(TZDIR)-leaps
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ln -s $(TZDIR_BASENAME) $(DESTDIR)$(TZDIR)-leaps || \
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$(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-leaps right_only
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$(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-posix posix_only
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rm -fr '$(DESTDIR)$(TZDIR)-leaps'
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ln -s '$(TZDIR_BASENAME)' '$(DESTDIR)$(TZDIR)-leaps' || \
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$(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only
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$(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only
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posix_right: posix_only
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rm -fr $(DESTDIR)$(TZDIR)-posix
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ln -s $(TZDIR_BASENAME) $(DESTDIR)$(TZDIR)-posix || \
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$(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-posix posix_only
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$(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-leaps right_only
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rm -fr '$(DESTDIR)$(TZDIR)-posix'
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ln -s '$(TZDIR_BASENAME)' '$(DESTDIR)$(TZDIR)-posix' || \
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$(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only
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$(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only
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# This obsolescent rule is present for backwards compatibility with
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# tz releases 2014g through 2015g. It should go away eventually.
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@ -764,7 +801,7 @@ set-timestamps.out: $(ENCHILADA)
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check_public:
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$(MAKE) maintainer-clean
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$(MAKE) "CFLAGS=$(GCC_DEBUG_FLAGS)" ALL
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$(MAKE) CFLAGS='$(GCC_DEBUG_FLAGS)' ALL
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mkdir -p public.dir
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for i in $(TDATA) tzdata.zi; do \
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$(zic) -v -d public.dir $$i 2>&1 || exit; \
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@ -790,8 +827,11 @@ check_time_t_alternatives:
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REDO='$(REDO)' \
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install && \
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diff $$quiet_option -r \
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time_t.dir/int64_t/etc/zoneinfo \
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time_t.dir/$$type/etc/zoneinfo && \
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time_t.dir/int64_t/etc \
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time_t.dir/$$type/etc && \
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diff $$quiet_option -r \
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time_t.dir/int64_t/usr/share \
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time_t.dir/$$type/usr/share && \
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case $$type in \
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int32_t) range=-2147483648,2147483647;; \
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uint32_t) range=0,4294967296;; \
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@ -800,9 +840,9 @@ check_time_t_alternatives:
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*) range=-10000000000,10000000000;; \
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esac && \
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echo checking $$type zones ... && \
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time_t.dir/int64_t/etc/zdump -V -t $$range $$zones \
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time_t.dir/int64_t/usr/bin/zdump -V -t $$range $$zones \
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>time_t.dir/int64_t.out && \
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time_t.dir/$$type/etc/zdump -V -t $$range $$zones \
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time_t.dir/$$type/usr/bin/zdump -V -t $$range $$zones \
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>time_t.dir/$$type.out && \
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diff -u time_t.dir/int64_t.out time_t.dir/$$type.out \
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|| exit; \
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120
NEWS
120
NEWS
@ -1,5 +1,101 @@
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News for the tz database
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Release 2018a - 2018-01-12 22:29:21 -0800
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Briefly:
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São Tomé and Príncipe switched from +00 to +01.
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Brazil's DST will now start on November's first Sunday.
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Ireland's standard time is now in the summer, not the winter.
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Use Debian-style installation locations, instead of 4.3BSD-style.
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New zic option -t.
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Changes to past and future time stamps
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São Tomé and Príncipe switched from +00 to +01 on 2018-01-01 at
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01:00. (Thanks to Steffen Thorsen and Michael Deckers.)
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Changes to future time stamps
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Starting in 2018 southern Brazil will begin DST on November's
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first Sunday instead of October's third Sunday. (Thanks to
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Steffen Thorsen.)
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Changes to past time stamps
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A discrepancy of 4 s in timestamps before 1931 in South Sudan has
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been corrected. The 'backzone' and 'zone.tab' files did not agree
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with the 'africa' and 'zone1970.tab' files. (Problem reported by
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Michael Deckers.)
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The abbreviation invented for Bolivia Summer Time (1931-2) is now
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BST instead of BOST, to be more consistent with the convention
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used for Latvian Summer Time (1918-9) and for British Summer Time.
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Changes to tm_isdst
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Change Europe/Dublin so that it observes Irish Standard Time (UT
|
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+01) in summer and GMT (as negative daylight-saving) in winter,
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instead of observing standard time (GMT) in winter and Irish
|
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Summer Time (UT +01) in summer. This change does not affect UT
|
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offsets or abbreviations; it affects only whether timestamps are
|
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considered to be standard time or daylight-saving time, as
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expressed in the tm_isdst flag of C's struct tm type.
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(Discrepancy noted by Derick Rethans.)
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Changes to build procedure
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The default installation locations have been changed to mostly
|
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match Debian circa 2017, instead of being designed as an add-on to
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4.3BSD circa 1986. This affects the Makefile macros TOPDIR,
|
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TZDIR, MANDIR, and LIBDIR. New Makefile macros TZDEFAULT, USRDIR,
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USRSHAREDIR, BINDIR, ZDUMPDIR, and ZICDIR let installers tailor
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locations more precisely. (This responds to suggestions from
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Brian Inglis and from Steve Summit.)
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The default installation procedure no longer creates the
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backward-compatibility link US/Pacific-New, which causes
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confusion during user setup (e.g., see Debian bug 815200).
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Use 'make BACKWARD="backward pacificnew"' to create the link
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anyway, for now. Eventually we plan to remove the link entirely.
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tzdata.zi now contains a version-number comment.
|
||||
(Suggested by Tom Lane.)
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The Makefile now quotes values like BACKWARD more carefully when
|
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passing them to the shell. (Problem reported by Zefram.)
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Builders no longer need to specify -DHAVE_SNPRINTF on platforms
|
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that have snprintf and use pre-C99 compilers. (Problem reported
|
||||
by Jon Skeet.)
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Changes to code
|
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zic has a new option -t FILE that specifies the location of the
|
||||
file that determines local time when TZ is unset. The default for
|
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this location can be configured via the new TZDEFAULT makefile
|
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macro, which defaults to /etc/localtime.
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||||
|
||||
Diagnostics and commentary now distinguish UT from UTC more
|
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carefully; see theory.html for more information about UT vs UTC.
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zic has been ported to GCC 8's -Wstringop-truncation option.
|
||||
(Problem reported by Martin Sebor.)
|
||||
|
||||
Changes to documentation and commentary
|
||||
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The zic man page now documents the longstanding behavior that
|
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times and years can be out of the usual range, with negative times
|
||||
counting backwards from midnight and with year 0 preceding year 1.
|
||||
(Problem reported by Michael Deckers.)
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|
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The theory.html file now mentions the POSIX limit of six chars
|
||||
per abbreviation, and lists alphabetic abbreviations used.
|
||||
|
||||
The files tz-art.htm and tz-link.htm have been renamed to
|
||||
tz-art.html and tz-link.html, respectively, for consistency with
|
||||
other file names and to simplify web server configuration.
|
||||
|
||||
|
||||
Release 2017c - 2017-10-20 14:49:34 -0700
|
||||
|
||||
Briefly:
|
||||
@ -895,8 +991,8 @@ Release 2015f - 2015-08-10 18:06:56 -0700
|
||||
(Thanks to Jon Skeet and Arthur David Olson.) Constraints on
|
||||
simultaneity are now documented.
|
||||
|
||||
The two characters '%z' in a zone format now stand for the UTC
|
||||
offset, e.g., '-07' for seven hours behind UTC and '+0530' for
|
||||
The two characters '%z' in a zone format now stand for the UT
|
||||
offset, e.g., '-07' for seven hours behind UT and '+0530' for
|
||||
five hours and thirty minutes ahead. This better supports time
|
||||
zone abbreviations conforming to POSIX.1-2001 and later.
|
||||
|
||||
@ -1019,13 +1115,13 @@ Release 2015c - 2015-04-11 08:55:55 -0700
|
||||
The spring 1988 transition was 1988-10-09, not 1988-10-02.
|
||||
The fall 1990 transition was 1990-03-11, not 1990-03-18.
|
||||
|
||||
Assume no UTC offset change for Pacific/Easter on 1890-01-01,
|
||||
Assume no UT offset change for Pacific/Easter on 1890-01-01,
|
||||
and omit all transitions on Pacific/Easter from 1942 through 1946
|
||||
since we have no data suggesting that they existed.
|
||||
|
||||
One more zone has been turned into a link, as it differed
|
||||
from an existing zone only for older time stamps. As usual,
|
||||
this change affects UTC offsets in pre-1970 time stamps only.
|
||||
this change affects UT offsets in pre-1970 time stamps only.
|
||||
The zone's old contents have been moved to the 'backzone' file.
|
||||
The affected zone is America/Montreal.
|
||||
|
||||
@ -1055,7 +1151,7 @@ Release 2015b - 2015-03-19 23:28:11 -0700
|
||||
|
||||
Some more zones have been turned into links, when they differed
|
||||
from existing zones only for older time stamps. As usual,
|
||||
these changes affect UTC offsets in pre-1970 time stamps only.
|
||||
these changes affect UT offsets in pre-1970 time stamps only.
|
||||
Their old contents have been moved to the 'backzone' file.
|
||||
The affected zones are: America/Antigua, America/Cayman,
|
||||
Pacific/Midway, and Pacific/Saipan.
|
||||
@ -1107,7 +1203,7 @@ Release 2015a - 2015-01-29 22:35:20 -0800
|
||||
|
||||
Some more zones have been turned into links, when they differed
|
||||
from existing zones only for older time stamps. As usual,
|
||||
these changes affect UTC offsets in pre-1970 time stamps only.
|
||||
these changes affect UT offsets in pre-1970 time stamps only.
|
||||
Their old contents have been moved to the 'backzone' file.
|
||||
The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait,
|
||||
and Asia/Muscat.
|
||||
@ -1154,7 +1250,7 @@ Release 2014j - 2014-11-10 17:37:11 -0800
|
||||
|
||||
Some more zones have been turned into links, when they differed
|
||||
from existing zones only for older time stamps. As usual,
|
||||
these changes affect UTC offsets in pre-1970 time stamps only.
|
||||
these changes affect UT offsets in pre-1970 time stamps only.
|
||||
Their old contents have been moved to the 'backzone' file.
|
||||
The affected zones are: Africa/Addis_Ababa, Africa/Asmara,
|
||||
Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala,
|
||||
@ -1244,7 +1340,7 @@ Release 2014h - 2014-09-25 18:59:03 -0700
|
||||
|
||||
Some more zones have been turned into links, when they differed
|
||||
from existing zones only for older timestamps. As usual,
|
||||
these changes affect UTC offsets in pre-1970 timestamps only.
|
||||
these changes affect UT offsets in pre-1970 timestamps only.
|
||||
Their old contents have been moved to the 'backzone' file.
|
||||
The affected zones are: Africa/Blantyre, Africa/Bujumbura,
|
||||
Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi,
|
||||
@ -1329,7 +1425,7 @@ Release 2014g - 2014-08-28 12:31:23 -0700
|
||||
|
||||
Some more zones have been turned into links, when they differed
|
||||
from existing zones only for older timestamps. As usual,
|
||||
these changes affect UTC offsets in pre-1970 timestamps only.
|
||||
these changes affect UT offsets in pre-1970 timestamps only.
|
||||
Their old contents have been moved to the 'backzone' file.
|
||||
The affected zones are: Africa/Bangui, Africa/Brazzaville,
|
||||
Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda,
|
||||
@ -1479,7 +1575,7 @@ Release 2014f - 2014-08-05 17:42:36 -0700
|
||||
standard and daylight saving time the abbreviations are AEST and AEDT
|
||||
instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT,
|
||||
and AWST/AWDT are now used instead of the former CST, CWST, and WST.
|
||||
This change does not affect UTC offsets, only time zone abbreviations.
|
||||
This change does not affect UT offsets, only time zone abbreviations.
|
||||
(Thanks to Rich Tibbett and many others.)
|
||||
|
||||
Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UT +07)
|
||||
@ -1516,8 +1612,8 @@ Release 2014f - 2014-08-05 17:42:36 -0700
|
||||
Treindl sent helpful translations of two papers by Guo Qingsheng.)
|
||||
|
||||
Some zones have been turned into links, when they differed from existing
|
||||
zones only for older UTC offsets where data entries were likely invented.
|
||||
These changes affect UTC offsets in pre-1970 timestamps only. This is
|
||||
zones only for older UT offsets where data entries were likely invented.
|
||||
These changes affect UT offsets in pre-1970 timestamps only. This is
|
||||
similar to the change in release 2013e, except this time for western
|
||||
Africa. The affected zones are: Africa/Bamako, Africa/Banjul,
|
||||
Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome,
|
||||
|
2
README
2
README
@ -11,7 +11,7 @@ changes made by political bodies to time zone boundaries, UTC offsets,
|
||||
and daylight-saving rules.
|
||||
|
||||
See <https://www.iana.org/time-zones/repository/tz-link.html> or the
|
||||
file tz-link.htm for how to acquire the code and data. Once acquired,
|
||||
file tz-link.html for how to acquire the code and data. Once acquired,
|
||||
read the comments in the file 'Makefile' and make any changes needed
|
||||
to make things right for your system, especially if you are using some
|
||||
platform other than GNU/Linux. Then run the following commands,
|
||||
|
16
africa
16
africa
@ -158,7 +158,6 @@ 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 Africa/Sao_Tome # São Tomé and Príncipe
|
||||
Link Africa/Abidjan Atlantic/St_Helena # St Helena
|
||||
|
||||
# Djibouti
|
||||
@ -425,7 +424,7 @@ Link Africa/Nairobi Indian/Mayotte
|
||||
#
|
||||
# The Nautical Almanac for the Year 1970, p 264, is the source for -0:44:30.
|
||||
#
|
||||
# In 1972 Liberia was the last country to switch from a UTC offset
|
||||
# In 1972 Liberia was the last country to switch from a UT offset
|
||||
# that was not a multiple of 15 or 20 minutes. The 1972 change was on
|
||||
# 1972-01-07, according to an entry dated 1972-01-04 on p 330 of:
|
||||
# Presidential Papers: First year of the administration of
|
||||
@ -1037,6 +1036,19 @@ Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis
|
||||
# Inaccessible, Nightingale: uninhabited
|
||||
|
||||
# São Tomé and Príncipe
|
||||
|
||||
# From Steffen Thorsen (2018-01-08):
|
||||
# Multiple sources tell that São Tomé changed from UTC to UTC+1 as
|
||||
# they entered the year 2018.
|
||||
# From Michael Deckers (2018-01-08):
|
||||
# the switch is from 01:00 to 02:00 ... [Decree No. 25/2017]
|
||||
# http://www.mnec.gov.st/index.php/publicacoes/documentos/file/90-decreto-lei-n-25-2017
|
||||
|
||||
Zone Africa/Sao_Tome 0:26:56 - LMT 1884
|
||||
-0:36:45 - LMT 1912 # Lisbon Mean Time
|
||||
0:00 - GMT 2018 Jan 1 01:00
|
||||
1:00 - WAT
|
||||
|
||||
# Senegal
|
||||
# See Africa/Abidjan.
|
||||
|
||||
|
18
asia
18
asia
@ -50,7 +50,7 @@
|
||||
# 9:00 KST KDT Korea when at +09
|
||||
# 9:30 ACST Australian Central Standard Time
|
||||
# Otherwise, these tables typically use numeric abbreviations like +03
|
||||
# and +0330 for integer hour and minute UTC offsets. Although earlier
|
||||
# and +0330 for integer hour and minute UT offsets. Although earlier
|
||||
# editions invented alphabetic time zone abbreviations for every
|
||||
# offset, this did not reflect common practice.
|
||||
#
|
||||
@ -647,17 +647,17 @@ Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30
|
||||
# time", in which abolished the adoption of Western Standard Time in
|
||||
# western islands (listed above), which means the whole Japan
|
||||
# territory, including later occupations, adopt Japan Central Time
|
||||
# (UTC+9). The adoption began on Oct 1, 1937. The original text can
|
||||
# (UT+9). The adoption began on Oct 1, 1937. The original text can
|
||||
# be found on Wikisource:
|
||||
# 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
|
||||
#
|
||||
# That is, the time zone of Taipei switched to UTC+9 on Oct 1, 1937.
|
||||
# That is, the time zone of Taipei switched to UT+9 on Oct 1, 1937.
|
||||
|
||||
# From Yu-Cheng Chuang (2014-07-02):
|
||||
# I've found more evidence about when the time zone was switched from UTC+9
|
||||
# back to UTC+8 after WW2. I believe it was on Sep 21, 1945. In a document
|
||||
# I've found more evidence about when the time zone was switched from UT+9
|
||||
# back to UT+8 after WW2. I believe it was on Sep 21, 1945. In a document
|
||||
# during Japanese era [1] in which the officer told the staff to change time
|
||||
# zone back to Western Standard Time (UTC+8) on Sep 21. And in another
|
||||
# zone back to Western Standard Time (UT+8) on Sep 21. And in another
|
||||
# history page of National Cheng Kung University [2], on Sep 21 there is a
|
||||
# note "from today, switch back to Western Standard Time". From these two
|
||||
# materials, I believe that the time zone change happened on Sep 21. And
|
||||
@ -1505,7 +1505,7 @@ Rule Japan 1950 1951 - May Sun>=1 2:00 1:00 D
|
||||
#
|
||||
# ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which
|
||||
# means the whole Japan territory, including later occupations, adopt Japan
|
||||
# Central Time (UTC+9). The adoption began on Oct 1, 1937.
|
||||
# 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]
|
||||
@ -2066,8 +2066,8 @@ Zone Asia/Kuching 7:21:20 - LMT 1926 Mar
|
||||
|
||||
# Maldives
|
||||
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
|
||||
Zone Indian/Maldives 4:54:00 - LMT 1880 # Male
|
||||
4:54:00 - MMT 1960 # Male Mean Time
|
||||
Zone Indian/Maldives 4:54:00 - LMT 1880 # Malé
|
||||
4:54:00 - MMT 1960 # Malé Mean Time
|
||||
5:00 - +05
|
||||
|
||||
# Mongolia
|
||||
|
@ -683,8 +683,8 @@ Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara
|
||||
# From Steffen Thorsen (2012-07-25)
|
||||
# ... we double checked by calling hotels and offices based in Tokelau asking
|
||||
# about the time there, and they all told a time that agrees with UTC+13....
|
||||
# Shanks says UTC-10 from 1901 [but] ... there is a good chance the change
|
||||
# actually was to UTC-11 back then.
|
||||
# Shanks says UT-10 from 1901 [but] ... there is a good chance the change
|
||||
# actually was to UT-11 back then.
|
||||
#
|
||||
# From Paul Eggert (2012-07-25)
|
||||
# A Google Books snippet of Appendix to the Journals of the House of
|
||||
@ -1450,7 +1450,7 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901
|
||||
#
|
||||
# From Paul Eggert (2006-03-22):
|
||||
# The Department of Internal Affairs (DIA) maintains a brief history,
|
||||
# as does Carol Squires; see tz-link.htm for the full references.
|
||||
# as does Carol Squires; see tz-link.html for the full references.
|
||||
# Use these sources in preference to Shanks & Pottenger.
|
||||
#
|
||||
# For Chatham, IATA SSIM (1991/1999) gives the NZ rules but with
|
||||
|
10
backzone
10
backzone
@ -145,11 +145,6 @@ Zone Africa/Gaborone 1:43:40 - LMT 1885
|
||||
Zone Africa/Harare 2:04:12 - LMT 1903 Mar
|
||||
2:00 - CAT
|
||||
|
||||
# South Sudan
|
||||
Zone Africa/Juba 2:06:24 - LMT 1931
|
||||
2:00 Sudan CA%sT 2000 Jan 15 12:00
|
||||
3:00 - EAT
|
||||
|
||||
# Uganda
|
||||
Zone Africa/Kampala 2:09:40 - LMT 1928 Jul
|
||||
3:00 - EAT 1930
|
||||
@ -242,11 +237,6 @@ Zone Africa/Porto-Novo 0:10:28 - LMT 1912 Jan 1
|
||||
0:00 - GMT 1934 Feb 26
|
||||
1:00 - WAT
|
||||
|
||||
# São Tomé and Príncipe
|
||||
Zone Africa/Sao_Tome 0:26:56 - LMT 1884
|
||||
-0:36:32 - LMT 1912 # Lisbon Mean Time
|
||||
0:00 - GMT
|
||||
|
||||
# Mali (northern)
|
||||
Zone Africa/Timbuktu -0:12:04 - LMT 1912
|
||||
0:00 - GMT
|
||||
|
108
europe
108
europe
@ -68,14 +68,15 @@
|
||||
# 0:00 WET WEST WEMT Western Europe
|
||||
# 0:19:32.13 AMT* NST* Amsterdam, Netherlands Summer (1835-1937)
|
||||
# 1:00 BST British Standard (1968-1971)
|
||||
# 1:00 IST GMT Irish Standard (1968-) with winter DST
|
||||
# 1:00 CET CEST CEMT Central Europe
|
||||
# 1:00:14 SET Swedish (1879-1899)
|
||||
# 1:36:34 RMT* LST* Riga, Latvian Summer (1880-1926)*
|
||||
# 2:00 EET EEST Eastern Europe
|
||||
# 3:00 MSK MSD MDST* Moscow
|
||||
|
||||
# From Peter Ilieve (1994-12-04),
|
||||
# The original six [EU members]: Belgium, France, (West) Germany, Italy,
|
||||
# From Peter Ilieve (1994-12-04), re EEC/EC/EU members:
|
||||
# The original six: Belgium, France, (West) Germany, Italy,
|
||||
# Luxembourg, the Netherlands.
|
||||
# Plus, from 1 Jan 73: Denmark, Ireland, United Kingdom.
|
||||
# Plus, from 1 Jan 81: Greece.
|
||||
@ -278,16 +279,31 @@
|
||||
# The following claim by Shanks & Pottenger is possible though doubtful;
|
||||
# we'll ignore it for now.
|
||||
# * Dublin's 1971-10-31 switch was at 02:00, even though London's was 03:00.
|
||||
|
||||
# From Paul Eggert (2017-12-04):
|
||||
#
|
||||
#
|
||||
# Whitman says Dublin Mean Time was -0:25:21, which is more precise than
|
||||
# Shanks & Pottenger.
|
||||
# Perhaps this was Dunsink Observatory Time, as Dunsink Observatory
|
||||
# (8 km NW of Dublin's center) seemingly was to Dublin as Greenwich was
|
||||
# to London. For example:
|
||||
# Dunsink Observatory (8 km NW of Dublin's center) was to Dublin as
|
||||
# Greenwich was to London. For example:
|
||||
#
|
||||
# "Timeball on the ballast office is down. Dunsink time."
|
||||
# -- James Joyce, Ulysses
|
||||
#
|
||||
# The abbreviation DMT stood for "Dublin Mean Time" or "Dunsink Mean Time";
|
||||
# this being Ireland, opinions differed.
|
||||
#
|
||||
# Whitman says Dublin/Dunsink Mean Time was UT-00:25:21, which agrees
|
||||
# with measurements of recent visitors to the Meridian Room of Dunsink
|
||||
# Observatory; see Malone D. Dunsink and timekeeping. 2016-01-24.
|
||||
# <https://www.maths.tcd.ie/~dwmalone/time/dunsink.html>. Malone
|
||||
# writes that the Nautical Almanac listed UT-00:25:22 until 1896, when
|
||||
# it moved to UT-00:25:21.1 (I confirmed that the 1893 edition used
|
||||
# the former and the 1896 edition used the latter). Evidently the
|
||||
# news of this change propagated slowly, as Milne 1899 still lists
|
||||
# UT-00:25:22 and cites the International Telegraph Bureau. As it is
|
||||
# not clear that there was any practical significance to the change
|
||||
# from UT-00:25:22 to UT-00:25:21.1 in civil timekeeping, omit this
|
||||
# transition for now and just use the latter value, omitting its
|
||||
# fraction since our format cannot represent fractions.
|
||||
|
||||
# "Countess Markievicz ... claimed that the [1916] abolition of Dublin Mean Time
|
||||
# was among various actions undertaken by the 'English' government that
|
||||
@ -347,12 +363,28 @@
|
||||
# regulations. I spoke this morning with the Secretary of the Department of
|
||||
# Justice (tel +353 1 678 9711) who confirmed to me that the correct name is
|
||||
# "Irish Summer Time", abbreviated to "IST".
|
||||
#
|
||||
# From Paul Eggert (2017-12-07):
|
||||
# The 1996 anonymous contributor's goal was to determine the correct
|
||||
# abbreviation for summer time in Dublin and so the contributor
|
||||
# focused on the "IST", not on the "Irish Summer Time". Though the
|
||||
# "IST" was correct, the "Irish Summer Time" appears to have been an
|
||||
# error, as Ireland's Standard Time (Amendment) Act, 1971 states that
|
||||
# standard time in Ireland remains at UT +01 and is observed in
|
||||
# summer, and that Greenwich mean time is observed in winter. (Thanks
|
||||
# to Derick Rethans for pointing out the error.) That is, when
|
||||
# Ireland amended the 1968 act that established UT +01 as Irish
|
||||
# Standard Time, it left standard time unchanged and established GMT
|
||||
# as a negative daylight saving time in winter. So, in this database
|
||||
# IST stands for Irish Summer Time for timestamps before 1968, and for
|
||||
# Irish Standard Time after that. See:
|
||||
# http://www.irishstatutebook.ie/eli/1971/act/17/enacted/en/print
|
||||
|
||||
# Michael Deckers (2017-06-01) gave the following URLs for Ireland's
|
||||
# Summer Time Act, 1925 and Summer Time Orders, 1926 and 1947:
|
||||
# http://www.irishstatutebook.ie/eli/1925/act/8/enacted/en/print.html
|
||||
# http://www.irishstatutebook.ie/eli/1926/sro/919/made/en/print.html
|
||||
# http://www.irishstatutebook.ie/eli/1947/sro/71/made/en/print.html
|
||||
# http://www.irishstatutebook.ie/eli/1925/act/8/enacted/en/print
|
||||
# http://www.irishstatutebook.ie/eli/1926/sro/919/made/en/print
|
||||
# http://www.irishstatutebook.ie/eli/1947/sro/71/made/en/print
|
||||
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
# Summer Time Act, 1916
|
||||
@ -476,9 +508,20 @@ Link Europe/London Europe/Jersey
|
||||
Link Europe/London Europe/Guernsey
|
||||
Link Europe/London Europe/Isle_of_Man
|
||||
|
||||
# The following is like GB-Eire and EU, except with standard time in
|
||||
# summer and negative daylight saving time in winter.
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
Rule Eire 1971 only - Oct 31 2:00u -1:00 GMT
|
||||
Rule Eire 1972 1980 - Mar Sun>=16 2:00u 0 IST
|
||||
Rule Eire 1972 1980 - Oct Sun>=23 2:00u -1:00 GMT
|
||||
Rule Eire 1981 max - Mar lastSun 1:00u 0 IST
|
||||
Rule Eire 1981 1989 - Oct Sun>=23 1:00u -1:00 GMT
|
||||
Rule Eire 1990 1995 - Oct Sun>=22 1:00u -1:00 GMT
|
||||
Rule Eire 1996 max - Oct lastSun 1:00u -1:00 GMT
|
||||
|
||||
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
|
||||
Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2
|
||||
-0:25:21 - DMT 1916 May 21 2:00s # Dublin MT
|
||||
-0:25:21 - DMT 1916 May 21 2:00s
|
||||
-0:25:21 1:00 IST 1916 Oct 1 2:00s
|
||||
0:00 GB-Eire %s 1921 Dec 6 # independence
|
||||
0:00 GB-Eire GMT/IST 1940 Feb 25 2:00s
|
||||
@ -487,16 +530,15 @@ 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
|
||||
1:00 - IST 1971 Oct 31 2:00u
|
||||
0:00 GB-Eire GMT/IST 1996
|
||||
0:00 EU GMT/IST
|
||||
1:00 Eire IST/GMT
|
||||
|
||||
###############################################################################
|
||||
|
||||
# Europe
|
||||
|
||||
# EU rules are for the European Union, previously known as the EC, EEC,
|
||||
# Common Market, etc.
|
||||
# The following rules are for the European Union and for its
|
||||
# predecessor organization, the European Communities.
|
||||
# For brevity they are called "EU rules" elsewhere in this file.
|
||||
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
Rule EU 1977 1980 - Apr Sun>=1 1:00u 1:00 S
|
||||
@ -929,7 +971,7 @@ Zone Europe/Prague 0:57:44 - LMT 1850
|
||||
# The page http://www.retsinfo.dk/_GETDOCI_/ACCN/A18930008330-REGL
|
||||
# confirms this, and states that the law was put forth 1893-03-29.
|
||||
#
|
||||
# The EU treaty with effect from 1973:
|
||||
# The EU [actually, EEC and Euratom] treaty with effect from 1973:
|
||||
# http://www.retsinfo.dk/_GETDOCI_/ACCN/A19722110030-REGL
|
||||
#
|
||||
# This provoked a new law from 1974 to make possible summer time changes
|
||||
@ -985,9 +1027,10 @@ Zone Atlantic/Faroe -0:27:04 - LMT 1908 Jan 11 # Tórshavn
|
||||
# East Greenland and Franz Josef Land, but we don't know their time zones.
|
||||
# My source for this is Wilhelm Dege's book mentioned under Svalbard.
|
||||
#
|
||||
# From Paul Eggert (2006-03-22):
|
||||
# Greenland joined the EU as part of Denmark, obtained home rule on 1979-05-01,
|
||||
# and left the EU on 1985-02-01. It therefore should have been using EU
|
||||
# From Paul Eggert (2017-12-10):
|
||||
# Greenland joined the European Communities as part of Denmark,
|
||||
# obtained home rule on 1979-05-01, and left the European Communities
|
||||
# on 1985-02-01. It therefore should have been using EU
|
||||
# rules at least through 1984. Shanks & Pottenger say Scoresbysund and Godthåb
|
||||
# used C-Eur rules after 1980, but IATA SSIM (1991/1996) says they use EU
|
||||
# rules since at least 1991. Assume EU rules since 1980.
|
||||
@ -1301,7 +1344,7 @@ Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01
|
||||
# From Markus Kuhn (1998-09-29):
|
||||
# The German time zone web site by the Physikalisch-Technische
|
||||
# Bundesanstalt contains DST information back to 1916.
|
||||
# [See tz-link.htm for the URL.]
|
||||
# [See tz-link.html for the URL.]
|
||||
|
||||
# From Jörg Schilling (2002-10-23):
|
||||
# In 1945, Berlin was switched to Moscow Summer time (GMT+4) by
|
||||
@ -1398,7 +1441,7 @@ Zone Europe/Athens 1:34:52 - LMT 1895 Sep 14
|
||||
1:00 Greece CE%sT 1944 Apr 4
|
||||
2:00 Greece EE%sT 1981
|
||||
# Shanks & Pottenger say it switched to C-Eur in 1981;
|
||||
# go with EU instead, since Greece joined it on Jan 1.
|
||||
# go with EU rules instead, since Greece joined Jan 1.
|
||||
2:00 EU EE%sT
|
||||
|
||||
# Hungary
|
||||
@ -2097,7 +2140,7 @@ Zone Europe/Warsaw 1:24:00 - LMT 1880
|
||||
# IATA SSIM (1991/1992) reports that the Azores were at -1:00.
|
||||
# IATA SSIM (1993-02) says +0:00; later issues (through 1996-09) say -1:00.
|
||||
# Guess that the Azores changed to EU rules in 1992 (since that's when Portugal
|
||||
# harmonized with the EU), and that they stayed +0:00 that winter.
|
||||
# harmonized with EU rules), and that they stayed +0:00 that winter.
|
||||
#
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
# DSH writes that despite Decree 1,469 (1915), the change to the clocks was not
|
||||
@ -2772,9 +2815,9 @@ Zone Asia/Omsk 4:53:30 - LMT 1919 Nov 14
|
||||
#
|
||||
# https://regnum.ru/news/society/1957270.html
|
||||
# has some historical data for Altai Krai:
|
||||
# before 1957: west part on UTC+6, east on UTC+7
|
||||
# after 1957: UTC+7
|
||||
# since 1995: UTC+6
|
||||
# before 1957: west part on UT+6, east on UT+7
|
||||
# after 1957: UT+7
|
||||
# since 1995: UT+6
|
||||
# http://barnaul.rusplt.ru/index/pochemu_altajskij_kraj_okazalsja_v_neprivychnom_chasovom_pojase-17648.html
|
||||
# confirms that and provides more details including 1995-05-28 transition date.
|
||||
|
||||
@ -3582,6 +3625,17 @@ Zone Europe/Zurich 0:34:08 - LMT 1853 Jul 16 # See above comment.
|
||||
# The change is permanent, so this is the new standard time in Turkey.
|
||||
# It takes effect today, which is not much notice.
|
||||
|
||||
# From Kıvanç Yazan (2017-10-28):
|
||||
# Turkey will go back to Daylight Saving Time starting 2018-10.
|
||||
# http://www.resmigazete.gov.tr/eskiler/2017/10/20171028-5.pdf
|
||||
#
|
||||
# From Even Scharning (2017-11-08):
|
||||
# ... today it was announced that the DST will become "continuous":
|
||||
# http://www.hurriyet.com.tr/son-dakika-yaz-saati-uygulamasi-surekli-hale-geldi-40637482
|
||||
# From Paul Eggert (2017-11-08):
|
||||
# Although Google Translate misfires on that source, it looks like
|
||||
# Turkey reversed last month's decision, and so will stay at +03.
|
||||
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
Rule Turkey 1916 only - May 1 0:00 1:00 S
|
||||
Rule Turkey 1916 only - Oct 1 0:00 0 -
|
||||
|
14
northamerica
14
northamerica
@ -348,6 +348,18 @@ Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58
|
||||
# Nebraska, eastern North Dakota, Oklahoma, eastern South Dakota,
|
||||
# western Tennessee, most of Texas, Wisconsin
|
||||
|
||||
# From Paul Eggert (2018-01-07):
|
||||
# In 1869 the Chicago Astronomical Society contracted with the city to keep
|
||||
# time. Though delayed by the Great Fire, by 1880 a wire ran from the
|
||||
# Dearborn Observatory (on the University of Chicago campus) to City Hall,
|
||||
# which then sent signals to police and fire stations. However, railroads got
|
||||
# their time signals from the Allegheny Observatory, the Madison Observatory,
|
||||
# the Ann Arbor Observatory, etc., so their clocks did not agree with each
|
||||
# other or with the city's official time. The confusion took some years to
|
||||
# clear up. See:
|
||||
# Moser M. How Chicago gave America its time zones. Chicago. 2018-01-04.
|
||||
# http://www.chicagomag.com/city-life/January-2018/How-Chicago-Gave-America-Its-Time-Zones/
|
||||
|
||||
# From Larry M. Smith (2006-04-26) re Wisconsin:
|
||||
# https://docs.legis.wisconsin.gov/statutes/statutes/175.pdf
|
||||
# is currently enforced at the 01:00 time of change. Because the local
|
||||
@ -1896,7 +1908,7 @@ Zone America/Edmonton -7:33:52 - LMT 1906 Sep
|
||||
# manager of the Creston & District Museum. The article was written in May 2009.
|
||||
# http://www.ilovecreston.com/?p=articles&t=spec&ar=260
|
||||
# According to the article, Creston has not changed its clocks since June 1918.
|
||||
# i.e. Creston has been stuck on UTC-7 for 93 years.
|
||||
# i.e. Creston has been stuck on UT-7 for 93 years.
|
||||
# Dawson Creek, on the other hand, changed its clocks as recently as April 1972.
|
||||
|
||||
# Unfortunately the exact date for the time change in June 1918 remains
|
||||
|
27
pacificnew
27
pacificnew
@ -1,27 +0,0 @@
|
||||
# This file is in the public domain, so clarified as of
|
||||
# 2009-05-17 by Arthur David Olson.
|
||||
|
||||
# From Arthur David Olson (1989-04-05):
|
||||
# On 1989-04-05, the U. S. House of Representatives passed (238-154) a bill
|
||||
# establishing "Pacific Presidential Election Time"; it was not acted on
|
||||
# by the Senate or signed into law by the President.
|
||||
# You might want to change the "PE" (Presidential Election) below to
|
||||
# "Q" (Quadrennial) to maintain three-character zone abbreviations.
|
||||
# If you're really conservative, you might want to change it to "D".
|
||||
# Avoid "L" (Leap Year), which won't be true in 2100.
|
||||
|
||||
# If Presidential Election Time is ever established, replace "XXXX" below
|
||||
# with the year the law takes effect and uncomment the "##" lines.
|
||||
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
## Rule Twilite XXXX max - Apr Sun>=1 2:00 1:00 D
|
||||
## Rule Twilite XXXX max uspres Oct lastSun 2:00 1:00 PE
|
||||
## 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 America/Los_Angeles-PET -8:00 US P%sT XXXX
|
||||
## -8:00 Twilite P%sT
|
||||
|
||||
# For now...
|
||||
Link America/Los_Angeles US/Pacific-New ##
|
21
southamerica
21
southamerica
@ -25,7 +25,7 @@
|
||||
# https://www.jstor.org/stable/1774359
|
||||
#
|
||||
# These tables use numeric abbreviations like -03 and -0330 for
|
||||
# integer hour and minute UTC offsets. Although earlier editions used
|
||||
# integer hour and minute UT offsets. Although earlier editions used
|
||||
# alphabetic time zone abbreviations, these abbreviations were
|
||||
# invented and did not reflect common practice.
|
||||
|
||||
@ -579,7 +579,7 @@ Link America/Curacao America/Aruba
|
||||
# Zone NAME GMTOFF 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 BOST 1932 Mar 21 # Bolivia ST
|
||||
-4:32:36 1:00 BST 1932 Mar 21 # Bolivia ST
|
||||
-4:00 - -04
|
||||
|
||||
# Brazil
|
||||
@ -908,12 +908,25 @@ Rule Brazil 2007 only - Oct Sun>=8 0:00 1:00 S
|
||||
# [t]he DST period in Brazil now on will be from the 3rd Oct Sunday to the
|
||||
# 3rd Feb Sunday. There is an exception on the return date when this is
|
||||
# the Carnival Sunday then the return date will be the next Sunday...
|
||||
Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S
|
||||
Rule Brazil 2008 2017 - Oct Sun>=15 0:00 1:00 S
|
||||
Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 -
|
||||
# Decree 7,584 <http://pcdsh01.on.br/HVdecreto7584_20111013.jpg> (2011-10-13)
|
||||
# added Bahia.
|
||||
Rule Brazil 2012 only - Feb Sun>=22 0:00 0 -
|
||||
# Decree 7,826 <http://pcdsh01.on.br/HVdecreto7826_20121015.jpg> (2012-10-15)
|
||||
# removed Bahia and added Tocantins.
|
||||
# Decree 8,112 <http://pcdsh01.on.br/HVdecreto8112_20130930.JPG> (2013-09-30)
|
||||
# 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 -
|
||||
# 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.
|
||||
# ... 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
|
||||
Rule Brazil 2018 max - Nov Sun>=1 0:00 1:00 S
|
||||
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 -
|
||||
@ -1068,7 +1081,7 @@ Zone America/Rio_Branco -4:31:12 - LMT 1914
|
||||
|
||||
# From Paul Eggert (2015-04-03):
|
||||
# Shanks & Pottenger says America/Santiago introduced standard time in
|
||||
# 1890 and rounds its UTC offset to 70W40; guess that in practice this
|
||||
# 1890 and rounds its UT offset to 70W40; guess that in practice this
|
||||
# was the same offset as in 1916-1919. It also says Pacific/Easter
|
||||
# standardized on 109W22 in 1890; assume this didn't change the clocks.
|
||||
#
|
||||
|
144
theory.html
144
theory.html
@ -52,6 +52,10 @@ However, the database is not designed for and does not suffice for
|
||||
applications requiring accurate handling of all past times everywhere,
|
||||
as it would take far too much effort and guesswork to record all
|
||||
details of pre-1970 civil timekeeping.
|
||||
Athough some information outside the scope of the database is
|
||||
collected in a file <code>backzone</code> that is distributed along
|
||||
with the database proper, this file is less reliable and does not
|
||||
necessarily follow database guidelines.
|
||||
</p>
|
||||
|
||||
<p>
|
||||
@ -240,7 +244,7 @@ to name time
|
||||
zone rules. It is intended to be an exhaustive list of names for
|
||||
geographic regions as described above; this is a subset of the names
|
||||
in the data. Although a '<code>zone1970.tab</code>' location's longitude
|
||||
corresponds to its LMT offset with one hour for every 15 degrees east
|
||||
corresponds to its LMT offset with one hour for every 15° east
|
||||
longitude, this relationship is not exact.
|
||||
</p>
|
||||
|
||||
@ -279,7 +283,7 @@ Here are the general rules used for choosing time zone abbreviations,
|
||||
in decreasing order of importance:
|
||||
<ul>
|
||||
<li>
|
||||
Use three or more characters that are ASCII alphanumerics or
|
||||
Use three to six characters that are ASCII alphanumerics or
|
||||
'<code>+</code>' or '<code>-</code>'.
|
||||
Previous editions of this database also used characters like
|
||||
'<code> </code>' and '<code>?</code>', but these
|
||||
@ -297,7 +301,7 @@ in decreasing order of importance:
|
||||
'<code>+</code>' and '<code>-</code>' are safe in all locales.
|
||||
|
||||
In other words, in the C locale the POSIX extended regular
|
||||
expression <code>[-+[:alnum:]]{3,}</code> should match
|
||||
expression <code>[-+[:alnum:]]{3,6}</code> should match
|
||||
the abbreviation.
|
||||
This guarantees that all abbreviations could have been
|
||||
specified by a POSIX TZ string.
|
||||
@ -308,12 +312,96 @@ in decreasing order of importance:
|
||||
We assume that applications translate them to other languages
|
||||
as part of the normal localization process; for example,
|
||||
a French application might translate 'EST' to 'HNE'.
|
||||
|
||||
<p><small>These abbreviations (for standard/daylight/etc. time) are:
|
||||
ACST/ACDT Australian Central,
|
||||
AST/ADT/APT/AWT/ADDT Atlantic,
|
||||
AEST/AEDT Australian Eastern,
|
||||
AHST/AHDT Alaska-Hawaii,
|
||||
AKST/AKDT Alaska,
|
||||
AWST/AWDT Australian Western,
|
||||
BST/BDT Bering,
|
||||
CAT/CAST Central Africa,
|
||||
CET/CEST/CEMT Central European,
|
||||
ChST Chamorro,
|
||||
CST/CDT/CWT/CPT/CDDT Central [North America],
|
||||
CST/CDT China,
|
||||
GMT/BST/IST/BDST Greenwich,
|
||||
EAT East Africa,
|
||||
EST/EDT/EWT/EPT/EDDT Eastern [North America],
|
||||
EET/EEST Eastern European,
|
||||
GST Guam,
|
||||
HST/HDT Hawaii,
|
||||
HKT/HKST Hong Kong,
|
||||
IST India,
|
||||
IST/GMT Irish,
|
||||
IST/IDT/IDDT Israel,
|
||||
JST/JDT Japan,
|
||||
KST/KDT Korea,
|
||||
MET/MEST Middle European (a backward-compatibility alias for Central European),
|
||||
MSK/MSD Moscow,
|
||||
MST/MDT/MWT/MPT/MDDT Mountain,
|
||||
NST/NDT/NWT/NPT/NDDT Newfoundland,
|
||||
NST/NDT/NWT/NPT Nome,
|
||||
NZMT/NZST New Zealand through 1945,
|
||||
NZST/NZDT New Zealand 1946–present,
|
||||
PKT/PKST Pakistan,
|
||||
PST/PDT/PWT/PPT/PDDT Pacific,
|
||||
SAST South Africa,
|
||||
SST Samoa,
|
||||
WAT/WAST West Africa,
|
||||
WET/WEST/WEMT Western European,
|
||||
WIB Waktu Indonesia Barat,
|
||||
WIT Waktu Indonesia Timur,
|
||||
WITA Waktu Indonesia Tengah,
|
||||
YST/YDT/YWT/YPT/YDDT Yukon</small>.</p>
|
||||
</li>
|
||||
<li>
|
||||
For zones whose times are taken from a city's longitude, use the
|
||||
traditional <var>x</var>MT notation, e.g. 'PMT' for
|
||||
Paris Mean Time.
|
||||
The only name like this in current use is 'GMT'.
|
||||
traditional <var>x</var>MT notation. The only abbreviation like this
|
||||
in current use is 'GMT'. The others are for timestamps before 1960,
|
||||
except that Monrovia Mean Time persisted until 1972. Typically,
|
||||
numeric abbreviations (e.g., '<code>-</code>004430' for MMT) would
|
||||
cause trouble here, as the numeric strings would exceed the POSIX length limit.
|
||||
|
||||
<p><small>These abbreviations are:
|
||||
AMT Amsterdam, Asunción, Athens;
|
||||
BMT Baghdad, Bangkok, Batavia, Bern, Bogotá, Bridgetown, Brussels, Bucharest;
|
||||
CMT Calamarca, Caracas, Chisinau, Colón, Copenhagen, Córdoba;
|
||||
DMT Dublin/Dunsink;
|
||||
EMT Easter;
|
||||
FFMT Fort-de-France;
|
||||
FMT Funchal;
|
||||
GMT Greenwich;
|
||||
HMT Havana, Helsinki, Horta, Howrah;
|
||||
IMT Irkutsk, Istanbul;
|
||||
JMT Jerusalem;
|
||||
KMT Kaunas, Kiev, Kingston;
|
||||
LMT Lima, Lisbon, local, Luanda;
|
||||
MMT Macassar, Madras, Malé, Managua, Minsk, Monrovia, Montevideo, Moratuwa,
|
||||
Moscow;
|
||||
PLMT Phù Liễn;
|
||||
PMT Paramaribo, Paris, Perm, Pontianak, Prague;
|
||||
PMMT Port Moresby;
|
||||
QMT Quito;
|
||||
RMT Rangoon, Riga, Rome;
|
||||
SDMT Santo Domingo;
|
||||
SJMT San José;
|
||||
SMT Santiago, Simferopol, Singapore, Stanley;
|
||||
TBMT Tbilisi;
|
||||
TMT Tallinn, Tehran;
|
||||
WMT Warsaw</small>.</p>
|
||||
|
||||
<p><small>A few abbreviations also follow the pattern that
|
||||
GMT/BST established for time in the UK. They are:
|
||||
|
||||
CMT/BST for Calamarca Mean Time and Bolivian Summer Time
|
||||
1890–1932, DMT/IST for Dublin/Dunsink Mean Time and Irish Summer Time
|
||||
1880–1916, MMT/MST/MDST for Moscow 1880–1919, and RMT/LST
|
||||
for Riga Mean Time and Latvian Summer time 1880–1926.
|
||||
An extra-special case is SET for Swedish Time (<em>svensk
|
||||
normaltid</em>) 1879–1899, 3° west of the Stockholm
|
||||
Observatory.</small></p>
|
||||
</li>
|
||||
<li>
|
||||
Use 'LMT' for local mean time of locations before the introduction
|
||||
@ -340,32 +428,6 @@ in decreasing order of importance:
|
||||
history tends to use numeric abbreviations and a particular
|
||||
entry could go either way, use a numeric abbreviation.
|
||||
</li>
|
||||
</ul>
|
||||
[The remaining guidelines predate the introduction of <code>%z</code>.
|
||||
They are problematic as they mean tz data entries invent
|
||||
notation rather than record it. These guidelines are now
|
||||
deprecated and the plan is to gradually move to <code>%z</code> for
|
||||
inhabited locations and to "<code>-</code>00" for uninhabited locations.]
|
||||
<ul>
|
||||
<li>
|
||||
If there is no common English abbreviation, abbreviate the English
|
||||
translation of the usual phrase used by native speakers.
|
||||
If this is not available or is a phrase mentioning the country
|
||||
(e.g. "Cape Verde Time"), then:
|
||||
<ul>
|
||||
<li>
|
||||
When a country is identified with a single or principal zone,
|
||||
append 'T' to the country's ISO code, e.g. 'CVT' for
|
||||
Cape Verde Time. For summer time append 'ST';
|
||||
for double summer time append 'DST'; etc.
|
||||
</li>
|
||||
<li>
|
||||
Otherwise, take the first three letters of an English place
|
||||
name identifying each zone and append 'T', 'ST', etc.
|
||||
as before; e.g. 'CHAST' for CHAtham Summer Time.
|
||||
</li>
|
||||
</ul>
|
||||
</li>
|
||||
<li>
|
||||
Use UT (with time zone abbreviation '<code>-</code>00') for
|
||||
locations while uninhabited. The leading
|
||||
@ -376,10 +438,10 @@ in decreasing order of importance:
|
||||
</ul>
|
||||
<p>
|
||||
Application writers should note that these abbreviations are ambiguous
|
||||
in practice: e.g. 'CST' has a different meaning in China than
|
||||
it does in the United States. In new applications, it's often better
|
||||
to use numeric UT offsets like '<code>-</code>0600' instead of time zone
|
||||
abbreviations like 'CST'; this avoids the ambiguity.
|
||||
in practice: e.g., 'CST' means one thing in China and something else
|
||||
in North America, and 'IST' can refer to time in India, Ireland or
|
||||
Israel. To avoid ambiguity, use numeric UT offsets like
|
||||
'<code>-</code>0600' instead of time zone abbreviations like 'CST'.
|
||||
</p>
|
||||
</section>
|
||||
|
||||
@ -388,7 +450,7 @@ abbreviations like 'CST'; this avoids the ambiguity.
|
||||
<h2 id="accuracy">Accuracy of the tz database</h2>
|
||||
<p>
|
||||
The tz database is not authoritative, and it surely has errors.
|
||||
Corrections are welcome and encouraged; see the file CONTRIBUTING.
|
||||
Corrections are welcome and encouraged; see the file <code>CONTRIBUTING</code>.
|
||||
Users requiring authoritative data should consult national standards
|
||||
bodies and the references cited in the database's comments.
|
||||
</p>
|
||||
@ -598,7 +660,7 @@ POSIX has the following properties and limitations.
|
||||
and daylight saving time (DST) zone names.
|
||||
Starting with POSIX.1-2001, <var>std</var>
|
||||
and <var>dst</var> may also be
|
||||
in a quoted form like '<code><UTC+10></code>'; this allows
|
||||
in a quoted form like '<code><+09></code>'; this allows
|
||||
"<code>+</code>" and "<code>-</code>" in the names.
|
||||
</dd>
|
||||
<dt><var>offset</var></dt><dd>
|
||||
@ -646,7 +708,7 @@ POSIX has the following properties and limitations.
|
||||
</dd>
|
||||
</dl>
|
||||
Here is an example POSIX TZ string for New Zealand after 2007.
|
||||
It says that standard time (NZST) is 12 hours ahead of UTC,
|
||||
It says that standard time (NZST) is 12 hours ahead of UT,
|
||||
and that daylight saving time (NZDT) is observed from September's
|
||||
last Sunday at 02:00 until April's first Sunday at 03:00:
|
||||
|
||||
@ -678,7 +740,7 @@ POSIX has the following properties and limitations.
|
||||
applications that an administrator wants used only at certain
|
||||
times –
|
||||
without regard to whether the user has fiddled the TZ environment
|
||||
variable. While an administrator can "do everything in UTC" to get
|
||||
variable. While an administrator can "do everything in UT" to get
|
||||
around the problem, doing so is inconvenient and precludes handling
|
||||
daylight saving time shifts - as might be required to limit phone
|
||||
calls to off-peak hours.)
|
||||
@ -902,7 +964,7 @@ Interface changes in a release attempt to preserve compatibility with
|
||||
recent releases. For example, tz data files typically do not rely on
|
||||
recently-added <code>zic</code> features, so that users can run
|
||||
older <code>zic</code> versions to process newer data
|
||||
files. <a href="tz-link.htm">Sources for time zone and daylight
|
||||
files. <a href="tz-link.html">Sources for time zone and daylight
|
||||
saving time data</a> describes how
|
||||
releases are tagged and distributed.
|
||||
</p>
|
||||
|
@ -144,6 +144,7 @@ function output_saved_lines(i)
|
||||
}
|
||||
|
||||
BEGIN {
|
||||
print "# version", version
|
||||
print "# This zic input file is in the public domain."
|
||||
}
|
||||
|
||||
|
2
zone.tab
2
zone.tab
@ -372,7 +372,7 @@ SM +4355+01228 Europe/San_Marino
|
||||
SN +1440-01726 Africa/Dakar
|
||||
SO +0204+04522 Africa/Mogadishu
|
||||
SR +0550-05510 America/Paramaribo
|
||||
SS +0451+03136 Africa/Juba
|
||||
SS +0451+03137 Africa/Juba
|
||||
ST +0020+00644 Africa/Sao_Tome
|
||||
SV +1342-08912 America/El_Salvador
|
||||
SX +180305-0630250 America/Lower_Princes
|
||||
|
@ -132,7 +132,7 @@ CA +6043-13503 America/Whitehorse Pacific - Yukon (south)
|
||||
CA +6404-13925 America/Dawson Pacific - Yukon (north)
|
||||
CC -1210+09655 Indian/Cocos
|
||||
CH,DE,LI +4723+00832 Europe/Zurich Swiss time
|
||||
CI,BF,GM,GN,ML,MR,SH,SL,SN,ST,TG +0519-00402 Africa/Abidjan
|
||||
CI,BF,GM,GN,ML,MR,SH,SL,SN,TG +0519-00402 Africa/Abidjan
|
||||
CK -2114-15946 Pacific/Rarotonga
|
||||
CL -3327-07040 America/Santiago Chile (most areas)
|
||||
CL -5309-07055 America/Punta_Arenas Region of Magallanes
|
||||
@ -321,6 +321,7 @@ SE +5920+01803 Europe/Stockholm
|
||||
SG +0117+10351 Asia/Singapore
|
||||
SR +0550-05510 America/Paramaribo
|
||||
SS +0451+03137 Africa/Juba
|
||||
ST +0020+00644 Africa/Sao_Tome
|
||||
SV +1342-08912 America/El_Salvador
|
||||
SY +3330+03618 Asia/Damascus
|
||||
TC +2128-07108 America/Grand_Turk
|
||||
|
Loading…
Reference in New Issue
Block a user