Import tzdata2016i.
Sponsored by: The FreeBSD Foundation
This commit is contained in:
gjb
parent
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73
CONTRIBUTING
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CONTRIBUTING
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Contributing to the tz code and data
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The time zone database is by no means authoritative: governments
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change timekeeping rules erratically and sometimes with little
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warning, the data entries do not cover all of civil time before
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1970, and undoubtedly errors remain in the code and data. Feel
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free to fill gaps or fix mistakes, and please email improvements
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to tz@iana.org for use in the future.
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To email small changes, please run a POSIX shell command like
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'diff -u old/europe new/europe >myfix.patch', and attach
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myfix.patch to the email.
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For more-elaborate changes, please read the Theory file and browse
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the mailing list archives <http://mm.icann.org/pipermail/tz/> for
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examples of patches that tend to work well. Ideally, additions to
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data should contain commentary citing reliable sources as
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justification.
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Please submit changes against either the latest release in
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<ftp://ftp.iana.org/tz/> or the master branch of the experimental
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Git repository. If you use Git the following workflow may be helpful:
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* Copy the experimental repository.
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git clone https://github.com/eggert/tz.git
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cd tz
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* Get current with the master branch.
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git checkout master
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git pull
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* Switch to a new branch for the changes. Choose a different
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branch name for each change set.
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git checkout -b mybranch
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* Edit source files. Include commentary that justifies the
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changes by citing reliable sources.
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* Debug the changes, e.g.:
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make check
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make install
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./zdump -v America/Los_Angeles
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* For each separable change, commit it in the new branch, e.g.:
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git add northamerica
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git commit
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See recent 'git log' output for the commit-message style.
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* Create patch files 0001-*, 0002-*, ...
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git format-patch master
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* After reviewing the patch files, send the patches to tz@iana.org
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for others to review.
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git send-email master
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* Start anew by getting current with the master branch again
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(the second step above).
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Please do not create issues or pull requests on GitHub, as the
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proper procedure for proposing and distributing patches is via
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email as illustrated above.
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-----
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This file is in the public domain.
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4
LICENSE
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4
LICENSE
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With a few exceptions, all files in the tz code and data (including
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this one) are in the public domain. The exceptions are date.c,
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newstrftime.3, and strftime.c, which contain material derived from BSD
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and which use the BSD 3-clause license.
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793
Makefile
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793
Makefile
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# This file is in the public domain, so clarified as of
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# 2009-05-17 by Arthur David Olson.
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# Package name for the code distribution.
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PACKAGE= tzcode
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# Version number for the distribution, overridden in the 'tarballs' rule below.
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VERSION= unknown
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# Email address for bug reports.
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BUGEMAIL= tz@iana.org
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# Change the line below for your time zone (after finding the zone you want in
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# the time zone files, or adding it to a time zone file).
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# Alternately, if you discover you've got the wrong time zone, you can just
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# zic -l rightzone
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# to correct things.
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# Use the command
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# make zonenames
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# to get a list of the values you can use for LOCALTIME.
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LOCALTIME= GMT
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# If you want something other than Eastern United States time as a template
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# for handling POSIX-style time zone environment variables,
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# change the line below (after finding the zone you want in the
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# time zone files, or adding it to a time zone file).
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# (When a POSIX-style environment variable is handled, the rules in the
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# template file are used to determine "spring forward" and "fall back" days and
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# times; the environment variable itself specifies UT offsets of standard and
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# summer time.)
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# Alternately, if you discover you've got the wrong time zone, you can just
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# zic -p rightzone
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# to correct things.
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# Use the command
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# make zonenames
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# to get a list of the values you can use for POSIXRULES.
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# If you want POSIX compatibility, use "America/New_York".
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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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# "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= zoneinfo
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TZDIR= $(TOPDIR)/etc/$(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", "zic", and "zdump" commands get installed in. . .
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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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# Manual pages go in subdirectories of. . .
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MANDIR= $(TOPDIR)/man
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# Library functions are put in an archive in LIBDIR.
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LIBDIR= $(TOPDIR)/lib
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# If you always want time values interpreted as "seconds since the epoch
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# (not counting leap seconds)", use
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# REDO= posix_only
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# below. If you always want right time values interpreted as "seconds since
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# the epoch" (counting leap seconds)", use
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# REDO= right_only
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# below. If you want both sets of data available, with leap seconds not
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# counted normally, use
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# REDO= posix_right
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# below. If you want both sets of data available, with leap seconds counted
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# normally, use
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# REDO= right_posix
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# below. POSIX mandates that leap seconds not be counted; for compatibility
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# with it, use "posix_only" or "posix_right".
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REDO= posix_right
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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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# To omit this data, use
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# PACKRATDATA=
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PACKRATDATA=
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# Since "." may not be in PATH...
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YEARISTYPE= ./yearistype
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# Non-default libraries needed to link.
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LDLIBS=
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# Add the following to the end of the "CFLAGS=" line as needed.
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# -DBIG_BANG=-9999999LL if the Big Bang occurred at time -9999999 (see zic.c)
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# -DHAVE_DECL_ASCTIME_R=0 if <time.h> does not declare asctime_r
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# -DHAVE_DIRECT_H if mkdir needs <direct.h> (MS-Windows)
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# -DHAVE_DOS_FILE_NAMES if file names have drive specifiers etc. (MS-DOS)
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# -DHAVE_GETTEXT=1 if 'gettext' works (e.g., GNU/Linux, FreeBSD, Solaris)
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# -DHAVE_INCOMPATIBLE_CTIME_R=1 if your system's time.h declares
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# ctime_r and asctime_r incompatibly with the POSIX standard
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# (Solaris when _POSIX_PTHREAD_SEMANTICS is not defined).
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# -DHAVE_INTTYPES_H=1 if you have a pre-C99 compiler with "inttypes.h"
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# -DHAVE_LINK=0 if your system lacks a link function
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# -DHAVE_LOCALTIME_R=0 if your system lacks a localtime_r function
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# -DHAVE_LOCALTIME_RZ=0 if you do not want zdump to use localtime_rz
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# This defaults to 1 if a working localtime_rz seems to be available.
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# localtime_rz can make zdump significantly faster, but is nonstandard.
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# -DHAVE_POSIX_DECLS=0 if your system's include files do not declare
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# functions like 'link' or variables like 'tzname' required by POSIX
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# -DHAVE_STDINT_H=1 if you have a pre-C99 compiler with "stdint.h"
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# -DHAVE_STRFTIME_L=1 if <time.h> declares locale_t and strftime_l
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# This defaults to 0 if _POSIX_VERSION < 200809, 1 otherwise.
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# -DHAVE_STRDUP=0 if your system lacks the strdup function
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# -DHAVE_SYMLINK=0 if your system lacks the symlink function
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# -DHAVE_SYS_STAT_H=0 if your compiler lacks a "sys/stat.h"
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# -DHAVE_SYS_WAIT_H=0 if your compiler lacks a "sys/wait.h"
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# -DHAVE_TZSET=0 if your system lacks a tzset function
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# -DHAVE_UNISTD_H=0 if your compiler lacks a "unistd.h" (Microsoft C++ 7?)
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# -DEPOCH_LOCAL=1 if the 'time' function returns local time not UT
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# -DEPOCH_OFFSET=N if the 'time' function returns a value N greater
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# than what POSIX specifies, assuming local time is UT.
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# For example, N is 252460800 on AmigaOS.
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# -DNO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU=1
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# if you do not want run time warnings about formats that may cause
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# year 2000 grief
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# -Dssize_t=long on ancient hosts that lack ssize_t
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# -DTHREAD_SAFE=1 to make localtime.c thread-safe, as POSIX requires;
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# not needed by the main-program tz code, which is single-threaded.
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# Append other compiler flags as needed, e.g., -pthread on GNU/Linux.
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# -Dtime_tz=\"T\" to use T as the time_t type, rather than the system time_t
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# -DTZ_DOMAIN=\"foo\" to use "foo" for gettext domain name; default is "tz"
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# -DTZ_DOMAINDIR=\"/path\" to use "/path" for gettext directory;
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# the default is system-supplied, typically "/usr/lib/locale"
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# -DTZDEFRULESTRING=\",date/time,date/time\" to default to the specified
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# DST transitions if the time zone files cannot be accessed
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# -DUNINIT_TRAP=1 if reading uninitialized storage can cause problems
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# other than simply getting garbage data
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# -DUSE_LTZ=0 to build zdump with the system time zone library
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# Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below.
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# -DZIC_MAX_ABBR_LEN_WO_WARN=3
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# (or some other number) to set the maximum time zone abbreviation length
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# that zic will accept without a warning (the default is 6)
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# $(GCC_DEBUG_FLAGS) if you are using recent GCC and want lots of checking
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GCC_DEBUG_FLAGS = -Dlint -g3 -O3 -fno-common -fstrict-aliasing \
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-Wall -Wextra \
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-Wbad-function-cast -Wcast-align -Wdate-time \
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-Wdeclaration-after-statement \
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-Wdouble-promotion \
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-Wformat=2 -Winit-self -Wjump-misses-init \
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-Wlogical-op -Wmissing-prototypes -Wnested-externs \
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-Wold-style-definition -Woverlength-strings -Wpointer-arith \
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-Wshadow -Wstrict-prototypes -Wsuggest-attribute=const \
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-Wsuggest-attribute=format -Wsuggest-attribute=noreturn \
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-Wsuggest-attribute=pure -Wtrampolines \
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-Wunused -Wwrite-strings \
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-Wno-address -Wno-format-nonliteral -Wno-sign-compare \
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-Wno-type-limits -Wno-unused-parameter
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#
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# If you want to use System V compatibility code, add
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# -DUSG_COMPAT
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# to the end of the "CFLAGS=" line. This arrange for "timezone" and "daylight"
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# variables to be kept up-to-date by the time conversion functions. Neither
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# "timezone" nor "daylight" is described in X3J11's work.
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#
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# If your system has a "GMT offset" field in its "struct tm"s
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# (or if you decide to add such a field in your system's "time.h" file),
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# add the name to a define such as
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# -DTM_GMTOFF=tm_gmtoff
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# to the end of the "CFLAGS=" line. If not defined, the code attempts to
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# guess TM_GMTOFF from other macros; define NO_TM_GMTOFF to suppress this.
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# Similarly, if your system has a "zone abbreviation" field, define
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# -DTM_ZONE=tm_zone
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# and define NO_TM_ZONE to suppress any guessing. These two fields are not
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# required by POSIX, but are widely available on GNU/Linux and BSD systems.
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#
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# If you want functions that were inspired by early versions of X3J11's work,
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# add
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# -DSTD_INSPIRED
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# to the end of the "CFLAGS=" line. This arranges for the functions
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# "tzsetwall", "offtime", "timelocal", "timegm", "timeoff",
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# "posix2time", and "time2posix" to be added to the time conversion library.
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# "tzsetwall" is like "tzset" except that it arranges for local wall clock
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# time (rather than the time specified in the TZ environment variable)
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# to be used.
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# "offtime" is like "gmtime" except that it accepts a second (long) argument
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# that gives an offset to add to the time_t when converting it.
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# "timelocal" is equivalent to "mktime".
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# "timegm" is like "timelocal" except that it turns a struct tm into
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# a time_t using UT (rather than local time as "timelocal" does).
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# "timeoff" is like "timegm" except that it accepts a second (long) argument
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# that gives an offset to use when converting to a time_t.
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# "posix2time" and "time2posix" are described in an included manual page.
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# X3J11's work does not describe any of these functions.
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# Sun has provided "tzsetwall", "timelocal", and "timegm" in SunOS 4.0.
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# These functions may well disappear in future releases of the time
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# conversion package.
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#
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# If you don't want functions that were inspired by NetBSD, add
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# -DNETBSD_INSPIRED=0
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# to the end of the "CFLAGS=" line. Otherwise, the functions
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# "localtime_rz", "mktime_z", "tzalloc", and "tzfree" are added to the
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# time library, and if STD_INSPIRED is also defined the functions
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# "posix2time_z" and "time2posix_z" are added as well.
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# The functions ending in "_z" (or "_rz") are like their unsuffixed
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# (or suffixed-by-"_r") counterparts, except with an extra first
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# argument of opaque type timezone_t that specifies the time zone.
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# "tzalloc" allocates a timezone_t value, and "tzfree" frees it.
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#
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# If you want to allocate state structures in localtime, add
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# -DALL_STATE
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# to the end of the "CFLAGS=" line. Storage is obtained by calling malloc.
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#
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# If you want an "altzone" variable (a la System V Release 3.1), add
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# -DALTZONE
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# to the end of the "CFLAGS=" line.
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# This variable is not described in X3J11's work.
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#
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# NIST-PCTS:151-2, Version 1.4, (1993-12-03) is a test suite put
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# out by the National Institute of Standards and Technology
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# which claims to test C and Posix conformance. If you want to pass PCTS, add
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# -DPCTS
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# to the end of the "CFLAGS=" line.
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#
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# If you want strict compliance with XPG4 as of 1994-04-09, add
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# -DXPG4_1994_04_09
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# to the end of the "CFLAGS=" line. This causes "strftime" to always return
|
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# 53 as a week number (rather than 52 or 53) for those days in January that
|
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# before the first Monday in January when a "%V" format is used and January 1
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# falls on a Friday, Saturday, or Sunday.
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CFLAGS=
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# Linker flags. Default to $(LFLAGS) for backwards compatibility
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# to release 2012h and earlier.
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LDFLAGS= $(LFLAGS)
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# For leap seconds, this Makefile uses LEAPSECONDS='-L leapseconds' in
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# submake command lines. The default is no leap seconds.
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LEAPSECONDS=
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# The zic command and its arguments.
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zic= ./zic
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ZIC= $(zic) $(ZFLAGS)
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ZFLAGS=
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# How to use zic to install tz binary files.
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ZIC_INSTALL= $(ZIC) -y $(YEARISTYPE) -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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# The full path name of a Posix-compliant shell, preferably one that supports
|
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# the Korn shell's 'select' statement as an extension.
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# These days, Bash is the most popular.
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# It should be OK to set this to /bin/sh, on platforms where /bin/sh
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# lacks 'select' or doesn't completely conform to Posix, but /bin/bash
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# is typically nicer if it works.
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KSHELL= /bin/bash
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# The path where SGML DTDs are kept and the catalog file(s) to use when
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# validating. The default should work on both Debian and Red Hat.
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SGML_TOPDIR= /usr
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SGML_DTDDIR= $(SGML_TOPDIR)/share/xml/w3c-sgml-lib/schema/dtd
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SGML_SEARCH_PATH= $(SGML_DTDDIR)/REC-html401-19991224
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SGML_CATALOG_FILES= \
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$(SGML_TOPDIR)/share/doc/w3-recs/html/www.w3.org/TR/1999/REC-html401-19991224/HTML4.cat:$(SGML_TOPDIR)/share/sgml/html/4.01/HTML4.cat
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# The name, arguments and environment of a program to validate your web pages.
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||||
# See <http://openjade.sourceforge.net/doc/> for a validator, and
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# <https://validator.w3.org/source/> for a validation library.
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VALIDATE = nsgmls
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VALIDATE_FLAGS = -s -B -wall -wno-unused-param
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VALIDATE_ENV = \
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SGML_CATALOG_FILES=$(SGML_CATALOG_FILES) \
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SGML_SEARCH_PATH=$(SGML_SEARCH_PATH) \
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SP_CHARSET_FIXED=YES \
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SP_ENCODING=UTF-8
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# This expensive test requires USE_LTZ.
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# To suppress it, define this macro to be empty.
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CHECK_TIME_T_ALTERNATIVES = check_time_t_alternatives
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# SAFE_CHAR is a regular expression that matches a safe character.
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# Some parts of this distribution are limited to safe characters;
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# others can use any UTF-8 character.
|
||||
# For now, the safe characters are a safe subset of ASCII.
|
||||
# The caller must set the shell variable 'sharp' to the character '#',
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# since Makefile macros cannot contain '#'.
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# TAB_CHAR is a single tab character, in single quotes.
|
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TAB_CHAR= ' '
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SAFE_CHARSET1= $(TAB_CHAR)' !\"'$$sharp'$$%&'\''()*+,./0123456789:;<=>?@'
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||||
SAFE_CHARSET2= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\^_`'
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||||
SAFE_CHARSET3= 'abcdefghijklmnopqrstuvwxyz{|}~'
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||||
SAFE_CHARSET= $(SAFE_CHARSET1)$(SAFE_CHARSET2)$(SAFE_CHARSET3)
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||||
SAFE_CHAR= '[]'$(SAFE_CHARSET)'-]'
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# OK_CHAR matches any character allowed in the distributed files.
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||||
# This is the same as SAFE_CHAR, except that multibyte letters are
|
||||
# also allowed so that commentary can contain people's names and quote
|
||||
# non-English sources. For non-letters the sources are limited to
|
||||
# ASCII renderings for the convenience of maintainers whose text editors
|
||||
# mishandle UTF-8 by default (e.g., XEmacs 21.4.22).
|
||||
OK_CHAR= '[][:alpha:]'$(SAFE_CHARSET)'-]'
|
||||
|
||||
# SAFE_LINE matches a line of safe characters.
|
||||
# SAFE_SHARP_LINE is similar, except any OK character can follow '#';
|
||||
# this is so that comments can contain non-ASCII characters.
|
||||
# OK_LINE matches a line of OK characters.
|
||||
SAFE_LINE= '^'$(SAFE_CHAR)'*$$'
|
||||
SAFE_SHARP_LINE='^'$(SAFE_CHAR)'*('$$sharp$(OK_CHAR)'*)?$$'
|
||||
OK_LINE= '^'$(OK_CHAR)'*$$'
|
||||
|
||||
# Flags to give 'tar' when making a distribution.
|
||||
# Try to use flags appropriate for GNU tar.
|
||||
GNUTARFLAGS= --numeric-owner --owner=0 --group=0 --mode=go+u,go-w --sort=name
|
||||
TARFLAGS= `if tar $(GNUTARFLAGS) --version >/dev/null 2>&1; \
|
||||
then echo $(GNUTARFLAGS); \
|
||||
else :; \
|
||||
fi`
|
||||
|
||||
# Flags to give 'gzip' when making a distribution.
|
||||
GZIPFLAGS= -9n
|
||||
|
||||
###############################################################################
|
||||
|
||||
#MAKE= make
|
||||
|
||||
cc= cc
|
||||
CC= $(cc) -DTZDIR=\"$(TZDIR)\"
|
||||
|
||||
AR= ar
|
||||
|
||||
# ':' on typical hosts; 'ranlib' on the ancient hosts that still need ranlib.
|
||||
RANLIB= :
|
||||
|
||||
TZCOBJS= zic.o
|
||||
TZDOBJS= zdump.o localtime.o asctime.o
|
||||
DATEOBJS= date.o localtime.o strftime.o asctime.o
|
||||
LIBSRCS= localtime.c asctime.c difftime.c
|
||||
LIBOBJS= localtime.o asctime.o difftime.o
|
||||
HEADERS= tzfile.h private.h
|
||||
NONLIBSRCS= zic.c zdump.c
|
||||
NEWUCBSRCS= date.c strftime.c
|
||||
SOURCES= $(HEADERS) $(LIBSRCS) $(NONLIBSRCS) $(NEWUCBSRCS) \
|
||||
tzselect.ksh workman.sh
|
||||
MANS= newctime.3 newstrftime.3 newtzset.3 time2posix.3 \
|
||||
tzfile.5 tzselect.8 zic.8 zdump.8
|
||||
MANTXTS= newctime.3.txt newstrftime.3.txt newtzset.3.txt \
|
||||
time2posix.3.txt \
|
||||
tzfile.5.txt tzselect.8.txt zic.8.txt zdump.8.txt \
|
||||
date.1.txt
|
||||
COMMON= CONTRIBUTING LICENSE Makefile NEWS README Theory version
|
||||
WEB_PAGES= tz-art.htm tz-how-to.html tz-link.htm
|
||||
DOCS= $(MANS) date.1 $(MANTXTS) $(WEB_PAGES)
|
||||
PRIMARY_YDATA= africa antarctica asia australasia \
|
||||
europe northamerica southamerica
|
||||
YDATA= $(PRIMARY_YDATA) pacificnew etcetera backward
|
||||
NDATA= systemv factory
|
||||
TDATA= $(YDATA) $(NDATA)
|
||||
ZONETABLES= zone1970.tab zone.tab
|
||||
TABDATA= iso3166.tab leapseconds $(ZONETABLES)
|
||||
LEAP_DEPS= leapseconds.awk leap-seconds.list
|
||||
DATA= $(YDATA) $(NDATA) backzone $(TABDATA) \
|
||||
leap-seconds.list yearistype.sh
|
||||
AWK_SCRIPTS= checklinks.awk checktab.awk leapseconds.awk
|
||||
MISC= $(AWK_SCRIPTS) zoneinfo2tdf.pl
|
||||
TZS_YEAR= 2050
|
||||
TZS= to$(TZS_YEAR).tzs
|
||||
TZS_NEW= to$(TZS_YEAR)new.tzs
|
||||
TZS_DEPS= $(PRIMARY_YDATA) asctime.c localtime.c \
|
||||
private.h tzfile.h zdump.c zic.c
|
||||
ENCHILADA= $(COMMON) $(DOCS) $(SOURCES) $(DATA) $(MISC) $(TZS)
|
||||
|
||||
# Consult these files when deciding whether to rebuild the 'version' file.
|
||||
# This list is not the same as the output of 'git ls-files', since
|
||||
# .gitignore is not distributed.
|
||||
VERSION_DEPS= \
|
||||
CONTRIBUTING LICENSE Makefile NEWS README Theory \
|
||||
africa antarctica asctime.c asia australasia \
|
||||
backward backzone \
|
||||
checklinks.awk checktab.awk \
|
||||
date.1 date.c difftime.c \
|
||||
etcetera europe factory iso3166.tab \
|
||||
leap-seconds.list leapseconds.awk localtime.c \
|
||||
newctime.3 newstrftime.3 newtzset.3 northamerica \
|
||||
pacificnew private.h \
|
||||
southamerica strftime.c systemv \
|
||||
time2posix.3 tz-art.htm tz-how-to.html tz-link.htm \
|
||||
tzfile.5 tzfile.h tzselect.8 tzselect.ksh \
|
||||
workman.sh yearistype.sh \
|
||||
zdump.8 zdump.c zic.8 zic.c \
|
||||
zone.tab zone1970.tab zoneinfo2tdf.pl
|
||||
|
||||
# And for the benefit of csh users on systems that assume the user
|
||||
# shell should be used to handle commands in Makefiles. . .
|
||||
|
||||
SHELL= /bin/sh
|
||||
|
||||
all: tzselect yearistype zic zdump libtz.a $(TABDATA)
|
||||
|
||||
ALL: all date $(ENCHILADA)
|
||||
|
||||
install: all $(DATA) $(REDO) $(MANS)
|
||||
mkdir -p $(DESTDIR)$(ETCDIR) $(DESTDIR)$(TZDIR) \
|
||||
$(DESTDIR)$(LIBDIR) \
|
||||
$(DESTDIR)$(MANDIR)/man3 $(DESTDIR)$(MANDIR)/man5 \
|
||||
$(DESTDIR)$(MANDIR)/man8
|
||||
$(ZIC_INSTALL) -l $(LOCALTIME) -p $(POSIXRULES)
|
||||
cp -f iso3166.tab $(ZONETABLES) $(DESTDIR)$(TZDIR)/.
|
||||
cp tzselect zic zdump $(DESTDIR)$(ETCDIR)/.
|
||||
cp libtz.a $(DESTDIR)$(LIBDIR)/.
|
||||
$(RANLIB) $(DESTDIR)$(LIBDIR)/libtz.a
|
||||
cp -f newctime.3 newtzset.3 $(DESTDIR)$(MANDIR)/man3/.
|
||||
cp -f tzfile.5 $(DESTDIR)$(MANDIR)/man5/.
|
||||
cp -f tzselect.8 zdump.8 zic.8 $(DESTDIR)$(MANDIR)/man8/.
|
||||
|
||||
INSTALL: ALL install date.1
|
||||
mkdir -p $(DESTDIR)$(BINDIR) $(DESTDIR)$(MANDIR)/man1
|
||||
cp date $(DESTDIR)$(BINDIR)/.
|
||||
cp -f date.1 $(DESTDIR)$(MANDIR)/man1/.
|
||||
|
||||
version: $(VERSION_DEPS)
|
||||
{ (type git) >/dev/null 2>&1 && \
|
||||
V=`git describe --match '[0-9][0-9][0-9][0-9][a-z]*' \
|
||||
--abbrev=7 --dirty` || \
|
||||
V=$(VERSION); } && \
|
||||
printf '%s\n' "$$V" >$@.out
|
||||
mv $@.out $@
|
||||
|
||||
version.h: version
|
||||
VERSION=`cat version` && printf '%s\n' \
|
||||
'static char const PKGVERSION[]="($(PACKAGE)) ";' \
|
||||
"static char const TZVERSION[]=\"$$VERSION\";" \
|
||||
'static char const REPORT_BUGS_TO[]="$(BUGEMAIL)";' \
|
||||
>$@.out
|
||||
mv $@.out $@
|
||||
|
||||
zdump: $(TZDOBJS)
|
||||
$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZDOBJS) $(LDLIBS)
|
||||
|
||||
zic: $(TZCOBJS)
|
||||
$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZCOBJS) $(LDLIBS)
|
||||
|
||||
yearistype: yearistype.sh
|
||||
cp yearistype.sh yearistype
|
||||
chmod +x yearistype
|
||||
|
||||
leapseconds: $(LEAP_DEPS)
|
||||
$(AWK) -f leapseconds.awk leap-seconds.list >$@.out
|
||||
mv $@.out $@
|
||||
|
||||
# Arguments to pass to submakes of install_data.
|
||||
# They can be overridden by later submake arguments.
|
||||
INSTALLARGS = \
|
||||
DESTDIR=$(DESTDIR) \
|
||||
LEAPSECONDS='$(LEAPSECONDS)' \
|
||||
PACKRATDATA='$(PACKRATDATA)' \
|
||||
TZDIR=$(TZDIR) \
|
||||
YEARISTYPE=$(YEARISTYPE) \
|
||||
ZIC='$(ZIC)'
|
||||
|
||||
# 'make install_data' installs one set of tz binary files.
|
||||
# It can be tailored by setting LEAPSECONDS, PACKRATDATA, etc.
|
||||
install_data: zic leapseconds yearistype $(PACKRATDATA) $(TDATA)
|
||||
$(ZIC_INSTALL) $(TDATA)
|
||||
$(AWK) '/^Rule/' $(TDATA) | $(ZIC_INSTALL) - $(PACKRATDATA)
|
||||
|
||||
posix_only:
|
||||
$(MAKE) $(INSTALLARGS) LEAPSECONDS= install_data
|
||||
|
||||
right_only:
|
||||
$(MAKE) $(INSTALLARGS) LEAPSECONDS='-L leapseconds' \
|
||||
install_data
|
||||
|
||||
# In earlier versions of this makefile, the other two directories were
|
||||
# subdirectories of $(TZDIR). However, this led to configuration errors.
|
||||
# For example, with posix_right under the earlier scheme,
|
||||
# TZ='right/Australia/Adelaide' got you localtime with leap seconds,
|
||||
# but gmtime without leap seconds, which led to problems with applications
|
||||
# like sendmail that subtract gmtime from localtime.
|
||||
# Therefore, the other two directories are now siblings of $(TZDIR).
|
||||
# You must replace all of $(TZDIR) to switch from not using leap seconds
|
||||
# to using them, or vice versa.
|
||||
right_posix: right_only
|
||||
rm -fr $(DESTDIR)$(TZDIR)-leaps
|
||||
ln -s $(TZDIR_BASENAME) $(DESTDIR)$(TZDIR)-leaps || \
|
||||
$(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-leaps right_only
|
||||
$(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-posix posix_only
|
||||
|
||||
posix_right: posix_only
|
||||
rm -fr $(DESTDIR)$(TZDIR)-posix
|
||||
ln -s $(TZDIR_BASENAME) $(DESTDIR)$(TZDIR)-posix || \
|
||||
$(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-posix posix_only
|
||||
$(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-leaps right_only
|
||||
|
||||
# This obsolescent rule is present for backwards compatibility with
|
||||
# tz releases 2014g through 2015g. It should go away eventually.
|
||||
posix_packrat:
|
||||
$(MAKE) $(INSTALLARGS) PACKRATDATA=backzone posix_only
|
||||
|
||||
zones: $(REDO)
|
||||
|
||||
$(TZS_NEW): $(TDATA) zdump zic
|
||||
mkdir -p tzs.dir
|
||||
$(zic) -d tzs.dir $(TDATA)
|
||||
$(AWK) '/^Link/{print $$1 "\t" $$2 "\t" $$3}' \
|
||||
$(TDATA) | LC_ALL=C sort >$@.out
|
||||
wd=`pwd` && \
|
||||
zones=`$(AWK) -v wd="$$wd" \
|
||||
'/^Zone/{print wd "/tzs.dir/" $$2}' $(TDATA) \
|
||||
| LC_ALL=C sort` && \
|
||||
./zdump -i -c $(TZS_YEAR) $$zones >>$@.out
|
||||
sed 's,^TZ=".*tzs\.dir/,TZ=",' $@.out >$@.sed.out
|
||||
rm -fr tzs.dir $@.out
|
||||
mv $@.sed.out $@
|
||||
|
||||
# If $(TZS) does not already exist (e.g., old-format tarballs), create it.
|
||||
# If it exists but 'make check_tzs' fails, a maintainer should inspect the
|
||||
# failed output and fix the inconsistency, perhaps by running 'make force_tzs'.
|
||||
$(TZS):
|
||||
$(MAKE) force_tzs
|
||||
|
||||
force_tzs: $(TZS_NEW)
|
||||
cp $(TZS_NEW) $(TZS)
|
||||
|
||||
libtz.a: $(LIBOBJS)
|
||||
$(AR) ru $@ $(LIBOBJS)
|
||||
$(RANLIB) $@
|
||||
|
||||
date: $(DATEOBJS)
|
||||
$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(DATEOBJS) $(LDLIBS)
|
||||
|
||||
tzselect: tzselect.ksh version
|
||||
VERSION=`cat version` && sed \
|
||||
-e 's|#!/bin/bash|#!$(KSHELL)|g' \
|
||||
-e 's|AWK=[^}]*|AWK=$(AWK)|g' \
|
||||
-e 's|\(PKGVERSION\)=.*|\1='\''($(PACKAGE)) '\''|' \
|
||||
-e 's|\(REPORT_BUGS_TO\)=.*|\1=$(BUGEMAIL)|' \
|
||||
-e 's|TZDIR=[^}]*|TZDIR=$(TZDIR)|' \
|
||||
-e 's|\(TZVERSION\)=.*|\1='"$$VERSION"'|' \
|
||||
<$@.ksh >$@.out
|
||||
chmod +x $@.out
|
||||
mv $@.out $@
|
||||
|
||||
check: check_character_set check_white_space check_links check_sorted \
|
||||
check_tables check_tzs check_web
|
||||
|
||||
check_character_set: $(ENCHILADA)
|
||||
LC_ALL=en_US.utf8 && export LC_ALL && \
|
||||
sharp='#' && \
|
||||
! grep -Env $(SAFE_LINE) $(MANS) date.1 $(MANTXTS) \
|
||||
$(MISC) $(SOURCES) $(WEB_PAGES) \
|
||||
CONTRIBUTING LICENSE Makefile README version && \
|
||||
! grep -Env $(SAFE_SHARP_LINE) $(TDATA) backzone \
|
||||
leapseconds yearistype.sh zone.tab && \
|
||||
! grep -Env $(OK_LINE) $(ENCHILADA)
|
||||
|
||||
check_white_space: $(ENCHILADA)
|
||||
patfmt=' \t|[\f\r\v]' && pat=`printf "$$patfmt\\n"` && \
|
||||
! grep -En "$$pat" $(ENCHILADA)
|
||||
! grep -n '[[:space:]]$$' $(ENCHILADA)
|
||||
|
||||
CHECK_CC_LIST = { n = split($$1,a,/,/); for (i=2; i<=n; i++) print a[1], a[i]; }
|
||||
|
||||
check_sorted: backward backzone iso3166.tab zone.tab zone1970.tab
|
||||
$(AWK) '/^Link/ {print $$3}' backward | LC_ALL=C sort -cu
|
||||
$(AWK) '/^Zone/ {print $$2}' backzone | LC_ALL=C sort -cu
|
||||
$(AWK) '/^[^#]/ {print $$1}' iso3166.tab | LC_ALL=C sort -cu
|
||||
$(AWK) '/^[^#]/ {print $$1}' zone.tab | LC_ALL=C sort -c
|
||||
$(AWK) '/^[^#]/ {print substr($$0, 1, 2)}' zone1970.tab | \
|
||||
LC_ALL=C sort -c
|
||||
$(AWK) '/^[^#]/ $(CHECK_CC_LIST)' zone1970.tab | \
|
||||
LC_ALL=C sort -cu
|
||||
|
||||
check_links: checklinks.awk $(TDATA)
|
||||
$(AWK) -f checklinks.awk $(TDATA)
|
||||
|
||||
check_tables: checktab.awk $(PRIMARY_YDATA) $(ZONETABLES)
|
||||
for tab in $(ZONETABLES); do \
|
||||
$(AWK) -f checktab.awk -v zone_table=$$tab $(PRIMARY_YDATA) \
|
||||
|| exit; \
|
||||
done
|
||||
|
||||
check_tzs: $(TZS) $(TZS_NEW)
|
||||
diff -u $(TZS) $(TZS_NEW)
|
||||
|
||||
check_web: $(WEB_PAGES)
|
||||
$(VALIDATE_ENV) $(VALIDATE) $(VALIDATE_FLAGS) $(WEB_PAGES)
|
||||
|
||||
clean_misc:
|
||||
rm -f core *.o *.out \
|
||||
date tzselect version.h zdump zic yearistype libtz.a
|
||||
clean: clean_misc
|
||||
rm -fr *.dir tzdb-*/ $(TZS_NEW)
|
||||
|
||||
maintainer-clean: clean
|
||||
@echo 'This command is intended for maintainers to use; it'
|
||||
@echo 'deletes files that may need special tools to rebuild.'
|
||||
rm -f leapseconds version $(MANTXTS) $(TZS) *.asc *.tar.*
|
||||
|
||||
names:
|
||||
@echo $(ENCHILADA)
|
||||
|
||||
public: check check_public $(CHECK_TIME_T_ALTERNATIVES) \
|
||||
tarballs signatures
|
||||
|
||||
date.1.txt: date.1
|
||||
newctime.3.txt: newctime.3
|
||||
newstrftime.3.txt: newstrftime.3
|
||||
newtzset.3.txt: newtzset.3
|
||||
time2posix.3.txt: time2posix.3
|
||||
tzfile.5.txt: tzfile.5
|
||||
tzselect.8.txt: tzselect.8
|
||||
zdump.8.txt: zdump.8
|
||||
zic.8.txt: zic.8
|
||||
|
||||
$(MANTXTS): workman.sh
|
||||
LC_ALL=C sh workman.sh `expr $@ : '\(.*\)\.txt$$'` >$@.out
|
||||
mv $@.out $@
|
||||
|
||||
# Set the time stamps to those of the git repository, if available,
|
||||
# and if the files have not changed since then.
|
||||
# This uses GNU 'touch' syntax 'touch -d@N FILE',
|
||||
# where N is the number of seconds since 1970.
|
||||
# If git or GNU 'touch' is absent, don't bother to sync with git timestamps.
|
||||
# Also, set the timestamp of each prebuilt file like 'leapseconds'
|
||||
# to be the maximum of the files it depends on.
|
||||
set-timestamps.out: $(ENCHILADA)
|
||||
rm -f $@
|
||||
if (type git) >/dev/null 2>&1 && \
|
||||
files=`git ls-files $(ENCHILADA)` && \
|
||||
touch -md @1 test.out; then \
|
||||
rm -f test.out && \
|
||||
for file in $$files; do \
|
||||
if git diff --quiet $$file; then \
|
||||
time=`git log -1 --format='tformat:%ct' $$file` && \
|
||||
touch -cmd @$$time $$file; \
|
||||
else \
|
||||
echo >&2 "$$file: warning: does not match repository"; \
|
||||
fi || exit; \
|
||||
done; \
|
||||
fi
|
||||
touch -cmr `ls -t $(LEAP_DEPS) | sed 1q` leapseconds
|
||||
for file in `ls $(MANTXTS) | sed 's/\.txt$$//'`; do \
|
||||
touch -cmr `ls -t $$file workman.sh | sed 1q` $$file.txt || \
|
||||
exit; \
|
||||
done
|
||||
touch -cmr `ls -t $(TZS_DEPS) | sed 1q` $(TZS)
|
||||
touch -cmr `ls -t $(VERSION_DEPS) | sed 1q` version
|
||||
touch $@
|
||||
|
||||
# The zics below ensure that each data file can stand on its own.
|
||||
# We also do an all-files run to catch links to links.
|
||||
|
||||
check_public:
|
||||
$(MAKE) maintainer-clean
|
||||
$(MAKE) "CFLAGS=$(GCC_DEBUG_FLAGS)" ALL
|
||||
mkdir -p public.dir
|
||||
for i in $(TDATA) ; do \
|
||||
$(zic) -v -d public.dir $$i 2>&1 || exit; \
|
||||
done
|
||||
$(zic) -v -d public.dir $(TDATA)
|
||||
rm -fr public.dir
|
||||
|
||||
# Check that the code works under various alternative
|
||||
# implementations of time_t.
|
||||
check_time_t_alternatives:
|
||||
if diff -q Makefile Makefile 2>/dev/null; then \
|
||||
quiet_option='-q'; \
|
||||
else \
|
||||
quiet_option=''; \
|
||||
fi && \
|
||||
wd=`pwd` && \
|
||||
zones=`$(AWK) '/^[^#]/ { print $$3 }' <zone1970.tab` && \
|
||||
for type in $(TIME_T_ALTERNATIVES); do \
|
||||
mkdir -p time_t.dir/$$type && \
|
||||
$(MAKE) clean_misc && \
|
||||
$(MAKE) TOPDIR="$$wd/time_t.dir/$$type" \
|
||||
CFLAGS='$(CFLAGS) -Dtime_tz='"'$$type'" \
|
||||
REDO='$(REDO)' \
|
||||
install && \
|
||||
diff $$quiet_option -r \
|
||||
time_t.dir/int64_t/etc/zoneinfo \
|
||||
time_t.dir/$$type/etc/zoneinfo && \
|
||||
case $$type in \
|
||||
int32_t) range=-2147483648,2147483647;; \
|
||||
uint32_t) range=0,4294967296;; \
|
||||
int64_t) continue;; \
|
||||
*u*) range=0,10000000000;; \
|
||||
*) range=-10000000000,10000000000;; \
|
||||
esac && \
|
||||
echo checking $$type zones ... && \
|
||||
time_t.dir/int64_t/etc/zdump -V -t $$range $$zones \
|
||||
>time_t.dir/int64_t.out && \
|
||||
time_t.dir/$$type/etc/zdump -V -t $$range $$zones \
|
||||
>time_t.dir/$$type.out && \
|
||||
diff -u time_t.dir/int64_t.out time_t.dir/$$type.out \
|
||||
|| exit; \
|
||||
done
|
||||
rm -fr time_t.dir
|
||||
|
||||
tarballs traditional_tarballs signatures traditional_signatures: version
|
||||
VERSION=`cat version` && \
|
||||
$(MAKE) VERSION="$$VERSION" $@_version
|
||||
|
||||
tarballs_version: traditional_tarballs_version tzdb-$(VERSION).tar.lz
|
||||
traditional_tarballs_version: \
|
||||
tzcode$(VERSION).tar.gz tzdata$(VERSION).tar.gz
|
||||
signatures_version: traditional_signatures_version tzdb-$(VERSION).tar.lz.asc
|
||||
traditional_signatures_version: \
|
||||
tzcode$(VERSION).tar.gz.asc tzdata$(VERSION).tar.gz.asc \
|
||||
|
||||
tzcode$(VERSION).tar.gz: set-timestamps.out
|
||||
LC_ALL=C && export LC_ALL && \
|
||||
tar $(TARFLAGS) -cf - \
|
||||
$(COMMON) $(DOCS) $(SOURCES) | \
|
||||
gzip $(GZIPFLAGS) >$@.out
|
||||
mv $@.out $@
|
||||
|
||||
tzdata$(VERSION).tar.gz: set-timestamps.out
|
||||
LC_ALL=C && export LC_ALL && \
|
||||
tar $(TARFLAGS) -cf - $(COMMON) $(DATA) $(MISC) | \
|
||||
gzip $(GZIPFLAGS) >$@.out
|
||||
mv $@.out $@
|
||||
|
||||
tzdb-$(VERSION).tar.lz: set-timestamps.out
|
||||
rm -fr tzdb-$(VERSION)
|
||||
mkdir tzdb-$(VERSION)
|
||||
ln $(ENCHILADA) tzdb-$(VERSION)
|
||||
touch -cmr `ls -t tzdb-$(VERSION)/* | sed 1q` tzdb-$(VERSION)
|
||||
LC_ALL=C && export LC_ALL && \
|
||||
tar $(TARFLAGS) -cf - tzdb-$(VERSION) | lzip -9 >$@.out
|
||||
mv $@.out $@
|
||||
|
||||
tzcode$(VERSION).tar.gz.asc: tzcode$(VERSION).tar.gz
|
||||
gpg --armor --detach-sign $?
|
||||
|
||||
tzdata$(VERSION).tar.gz.asc: tzdata$(VERSION).tar.gz
|
||||
gpg --armor --detach-sign $?
|
||||
|
||||
tzdb-$(VERSION).tar.lz.asc: tzdb-$(VERSION).tar.lz
|
||||
gpg --armor --detach-sign $?
|
||||
|
||||
typecheck:
|
||||
$(MAKE) clean
|
||||
for i in "long long" unsigned; \
|
||||
do \
|
||||
$(MAKE) CFLAGS="-DTYPECHECK -D__time_t_defined -D_TIME_T \"-Dtime_t=$$i\"" ; \
|
||||
./zdump -v Europe/Rome ; \
|
||||
$(MAKE) clean ; \
|
||||
done
|
||||
|
||||
zonenames: $(TDATA)
|
||||
@$(AWK) '/^Zone/ { print $$2 } /^Link/ { print $$3 }' $(TDATA)
|
||||
|
||||
asctime.o: private.h tzfile.h
|
||||
date.o: private.h
|
||||
difftime.o: private.h
|
||||
localtime.o: private.h tzfile.h
|
||||
strftime.o: private.h tzfile.h
|
||||
zdump.o: version.h
|
||||
zic.o: private.h tzfile.h version.h
|
||||
|
||||
.KEEP_STATE:
|
||||
|
||||
.PHONY: ALL INSTALL all
|
||||
.PHONY: check check_character_set check_links
|
||||
.PHONY: check_public check_sorted check_tables
|
||||
.PHONY: check_time_t_alternatives check_tzs check_web check_white_space
|
||||
.PHONY: clean clean_misc force_tzs
|
||||
.PHONY: install install_data maintainer-clean names
|
||||
.PHONY: posix_only posix_packrat posix_right
|
||||
.PHONY: public right_only right_posix signatures signatures_version
|
||||
.PHONY: tarballs tarballs_version typecheck
|
||||
.PHONY: zonenames zones
|
||||
71
README
Normal file
71
README
Normal file
@ -0,0 +1,71 @@
|
||||
README for the tz distribution
|
||||
|
||||
"What time is it?" -- Richard Deacon as The King
|
||||
"Any time you want it to be." -- Frank Baxter as The Scientist
|
||||
(from the Bell System film "About Time")
|
||||
|
||||
The Time Zone Database (often called tz or zoneinfo) contains code and
|
||||
data that represent the history of local time for many representative
|
||||
locations around the globe. It is updated periodically to reflect
|
||||
changes made by political bodies to time zone boundaries, UTC offsets,
|
||||
and daylight-saving rules.
|
||||
|
||||
Here is a recipe for acquiring, building, installing, and testing the
|
||||
tz distribution on a GNU/Linux or similar host.
|
||||
|
||||
To acquire the distribution, run the following shell commands:
|
||||
|
||||
mkdir tz
|
||||
cd tz
|
||||
wget --retr-symlinks 'ftp://ftp.iana.org/tz/tz*-latest.tar.gz'
|
||||
gzip -dc tzcode-latest.tar.gz | tar -xf -
|
||||
gzip -dc tzdata-latest.tar.gz | tar -xf -
|
||||
|
||||
Alternatively, the following shell commands acquire the same
|
||||
distribution, with extra data useful for regression testing:
|
||||
|
||||
wget --retr-symlinks 'ftp://ftp.iana.org/tz/tzdb-latest.tar.lz'
|
||||
lzip -dc tzdb-latest.tar.lz | tar -xf -
|
||||
|
||||
Be sure to read the comments in "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,
|
||||
substituting your desired installation directory for "$HOME/tzdir":
|
||||
|
||||
make TOPDIR=$HOME/tzdir install
|
||||
$HOME/tzdir/etc/zdump -v America/Los_Angeles
|
||||
|
||||
Historical local time information has been included here to:
|
||||
|
||||
* provide a compendium of data about the history of civil time
|
||||
that is useful even if not 100% accurate;
|
||||
|
||||
* give an idea of the variety of local time rules that have
|
||||
existed in the past and thus an idea of the variety that may be
|
||||
expected in the future;
|
||||
|
||||
* provide a test of the generality of the local time rule description
|
||||
system.
|
||||
|
||||
The information in the time zone data files is by no means authoritative;
|
||||
fixes and enhancements are welcome. Please see the file CONTRIBUTING
|
||||
for details.
|
||||
|
||||
Thanks to these Time Zone Caballeros who've made major contributions to the
|
||||
time conversion package: Keith Bostic; Bob Devine; Paul Eggert; Robert Elz;
|
||||
Guy Harris; Mark Horton; John Mackin; and Bradley White. Thanks also to
|
||||
Michael Bloom, Art Neilson, Stephen Prince, John Sovereign, and Frank Wales
|
||||
for testing work, and to Gwillim Law for checking local mean time data.
|
||||
Thanks in particular to Arthur David Olson, the project's founder and first
|
||||
maintainer, to whom the time zone community owes the greatest debt of all.
|
||||
None of them are responsible for remaining errors.
|
||||
|
||||
Look in <ftp://ftp.iana.org/tz/releases/> for updated versions of these files.
|
||||
|
||||
Please send comments or information to tz@iana.org.
|
||||
|
||||
-----
|
||||
|
||||
This file is in the public domain, so clarified as of 2009-05-17 by
|
||||
Arthur David Olson. The other files in this distribution are either
|
||||
public domain or BSD licensed; see the file LICENSE for details.
|
||||
840
Theory
Normal file
840
Theory
Normal file
@ -0,0 +1,840 @@
|
||||
Theory and pragmatics of the tz code and data
|
||||
|
||||
|
||||
----- Outline -----
|
||||
|
||||
Scope of the tz database
|
||||
Names of time zone rules
|
||||
Time zone abbreviations
|
||||
Accuracy of the tz database
|
||||
Time and date functions
|
||||
Calendrical issues
|
||||
Time and time zones on Mars
|
||||
|
||||
|
||||
----- Scope of the tz database -----
|
||||
|
||||
The tz database attempts to record the history and predicted future of
|
||||
all computer-based clocks that track civil time. To represent this
|
||||
data, the world is partitioned into regions whose clocks all agree
|
||||
about time stamps that occur after the somewhat-arbitrary cutoff point
|
||||
of the POSIX Epoch (1970-01-01 00:00:00 UTC). For each such region,
|
||||
the database records all known clock transitions, and labels the region
|
||||
with a notable location. Although 1970 is a somewhat-arbitrary
|
||||
cutoff, there are significant challenges to moving the cutoff earlier
|
||||
even by a decade or two, due to the wide variety of local practices
|
||||
before computer timekeeping became prevalent.
|
||||
|
||||
Clock transitions before 1970 are recorded for each such location,
|
||||
because most systems support time stamps before 1970 and could
|
||||
misbehave if data entries were omitted for pre-1970 transitions.
|
||||
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.
|
||||
|
||||
As described below, reference source code for using the tz database is
|
||||
also available. The tz code is upwards compatible with POSIX, an
|
||||
international standard for UNIX-like systems. As of this writing, the
|
||||
current edition of POSIX is:
|
||||
|
||||
The Open Group Base Specifications Issue 7
|
||||
IEEE Std 1003.1, 2013 Edition
|
||||
<http://pubs.opengroup.org/onlinepubs/9699919799/>
|
||||
|
||||
|
||||
|
||||
----- Names of time zone rules -----
|
||||
|
||||
Each of the database's time zone rules has a unique name.
|
||||
Inexperienced users are not expected to select these names unaided.
|
||||
Distributors should provide documentation and/or a simple selection
|
||||
interface that explains the names; for one example, see the 'tzselect'
|
||||
program in the tz code. The Unicode Common Locale Data Repository
|
||||
<http://cldr.unicode.org/> contains data that may be useful for other
|
||||
selection interfaces.
|
||||
|
||||
The time zone rule naming conventions attempt to strike a balance
|
||||
among the following goals:
|
||||
|
||||
* Uniquely identify every region where clocks have agreed since 1970.
|
||||
This is essential for the intended use: static clocks keeping local
|
||||
civil time.
|
||||
|
||||
* Indicate to experts where that region is.
|
||||
|
||||
* Be robust in the presence of political changes. For example, names
|
||||
of countries are ordinarily not used, to avoid incompatibilities
|
||||
when countries change their name (e.g. Zaire->Congo) or when
|
||||
locations change countries (e.g. Hong Kong from UK colony to
|
||||
China).
|
||||
|
||||
* Be portable to a wide variety of implementations.
|
||||
|
||||
* Use a consistent naming conventions over the entire world.
|
||||
|
||||
Names normally have the form AREA/LOCATION, where AREA is the name
|
||||
of a continent or ocean, and LOCATION is the name of a specific
|
||||
location within that region. North and South America share the same
|
||||
area, 'America'. Typical names are 'Africa/Cairo', 'America/New_York',
|
||||
and 'Pacific/Honolulu'.
|
||||
|
||||
Here are the general rules used for choosing location names,
|
||||
in decreasing order of importance:
|
||||
|
||||
Use only valid POSIX file name components (i.e., the parts of
|
||||
names other than '/'). Do not use the file name
|
||||
components '.' and '..'. Within a file name component,
|
||||
use only ASCII letters, '.', '-' and '_'. Do not use
|
||||
digits, as that might create an ambiguity with POSIX
|
||||
TZ strings. A file name component must not exceed 14
|
||||
characters or start with '-'. E.g., prefer 'Brunei'
|
||||
to 'Bandar_Seri_Begawan'. Exceptions: see the discussion
|
||||
of legacy names below.
|
||||
A name must not be empty, or contain '//', or start or end with '/'.
|
||||
Do not use names that differ only in case. Although the reference
|
||||
implementation is case-sensitive, some other implementations
|
||||
are not, and they would mishandle names differing only in case.
|
||||
If one name A is an initial prefix of another name AB (ignoring case),
|
||||
then B must not start with '/', as a regular file cannot have
|
||||
the same name as a directory in POSIX. For example,
|
||||
'America/New_York' precludes 'America/New_York/Bronx'.
|
||||
Uninhabited regions like the North Pole and Bouvet Island
|
||||
do not need locations, since local time is not defined there.
|
||||
There should typically be at least one name for each ISO 3166-1
|
||||
officially assigned two-letter code for an inhabited country
|
||||
or territory.
|
||||
If all the clocks in a region have agreed since 1970,
|
||||
don't bother to include more than one location
|
||||
even if subregions' clocks disagreed before 1970.
|
||||
Otherwise these tables would become annoyingly large.
|
||||
If a name is ambiguous, use a less ambiguous alternative;
|
||||
e.g. many cities are named San José and Georgetown, so
|
||||
prefer 'Costa_Rica' to 'San_Jose' and 'Guyana' to 'Georgetown'.
|
||||
Keep locations compact. Use cities or small islands, not countries
|
||||
or regions, so that any future time zone changes do not split
|
||||
locations into different time zones. E.g. prefer 'Paris'
|
||||
to 'France', since France has had multiple time zones.
|
||||
Use mainstream English spelling, e.g. prefer 'Rome' to 'Roma', and
|
||||
prefer 'Athens' to the Greek 'Αθήνα' or the Romanized 'Athína'.
|
||||
The POSIX file name restrictions encourage this rule.
|
||||
Use the most populous among locations in a zone,
|
||||
e.g. prefer 'Shanghai' to 'Beijing'. Among locations with
|
||||
similar populations, pick the best-known location,
|
||||
e.g. prefer 'Rome' to 'Milan'.
|
||||
Use the singular form, e.g. prefer 'Canary' to 'Canaries'.
|
||||
Omit common suffixes like '_Islands' and '_City', unless that
|
||||
would lead to ambiguity. E.g. prefer 'Cayman' to
|
||||
'Cayman_Islands' and 'Guatemala' to 'Guatemala_City',
|
||||
but prefer 'Mexico_City' to 'Mexico' because the country
|
||||
of Mexico has several time zones.
|
||||
Use '_' to represent a space.
|
||||
Omit '.' from abbreviations in names, e.g. prefer 'St_Helena'
|
||||
to 'St._Helena'.
|
||||
Do not change established names if they only marginally
|
||||
violate the above rules. For example, don't change
|
||||
the existing name 'Rome' to 'Milan' merely because
|
||||
Milan's population has grown to be somewhat greater
|
||||
than Rome's.
|
||||
If a name is changed, put its old spelling in the 'backward' file.
|
||||
This means old spellings will continue to work.
|
||||
|
||||
The file 'zone1970.tab' lists geographical locations used 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 'zone1970.tab' location's longitude
|
||||
corresponds to its LMT offset with one hour for every 15 degrees east
|
||||
longitude, this relationship is not exact.
|
||||
|
||||
Older versions of this package used a different naming scheme,
|
||||
and these older names are still supported.
|
||||
See the file 'backward' for most of these older names
|
||||
(e.g., 'US/Eastern' instead of 'America/New_York').
|
||||
The other old-fashioned names still supported are
|
||||
'WET', 'CET', 'MET', and 'EET' (see the file 'europe').
|
||||
|
||||
Older versions of this package defined legacy names that are
|
||||
incompatible with the first rule of location names, but which are
|
||||
still supported. These legacy names are mostly defined in the file
|
||||
'etcetera'. Also, the file 'backward' defines the legacy names
|
||||
'GMT0', 'GMT-0', 'GMT+0' and 'Canada/East-Saskatchewan', and the file
|
||||
'northamerica' defines the legacy names 'EST5EDT', 'CST6CDT',
|
||||
'MST7MDT', and 'PST8PDT'.
|
||||
|
||||
Excluding 'backward' should not affect the other data. If
|
||||
'backward' is excluded, excluding 'etcetera' should not affect the
|
||||
remaining data.
|
||||
|
||||
|
||||
----- Time zone abbreviations -----
|
||||
|
||||
When this package is installed, it generates time zone abbreviations
|
||||
like 'EST' to be compatible with human tradition and POSIX.
|
||||
Here are the general rules used for choosing time zone abbreviations,
|
||||
in decreasing order of importance:
|
||||
|
||||
Use three or more characters that are ASCII alphanumerics or '+' or '-'.
|
||||
Previous editions of this database also used characters like
|
||||
' ' and '?', but these characters have a special meaning to
|
||||
the shell and cause commands like
|
||||
set `date`
|
||||
to have unexpected effects.
|
||||
Previous editions of this rule required upper-case letters,
|
||||
but the Congressman who introduced Chamorro Standard Time
|
||||
preferred "ChST", so lower-case letters are now allowed.
|
||||
Also, POSIX from 2001 on relaxed the rule to allow '-', '+',
|
||||
and alphanumeric characters from the portable character set
|
||||
in the current locale. In practice ASCII alphanumerics and
|
||||
'+' and '-' are safe in all locales.
|
||||
|
||||
In other words, in the C locale the POSIX extended regular
|
||||
expression [-+[:alnum:]]{3,} should match the abbreviation.
|
||||
This guarantees that all abbreviations could have been
|
||||
specified by a POSIX TZ string.
|
||||
|
||||
Use abbreviations that are in common use among English-speakers,
|
||||
e.g. 'EST' for Eastern Standard Time in North America.
|
||||
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'.
|
||||
|
||||
For zones whose times are taken from a city's longitude, use the
|
||||
traditional xMT notation, e.g. 'PMT' for Paris Mean Time.
|
||||
The only name like this in current use is 'GMT'.
|
||||
|
||||
Use 'LMT' for local mean time of locations before the introduction
|
||||
of standard time; see "Scope of the tz database".
|
||||
|
||||
If there is no common English abbreviation, use numeric offsets like
|
||||
-05 and +0830 that are generated by zic's %z notation.
|
||||
|
||||
[The remaining guidelines predate the introduction of %z.
|
||||
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 %z for
|
||||
inhabited locations and to "-00" for uninhabited locations.]
|
||||
|
||||
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:
|
||||
|
||||
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.
|
||||
Otherwise, take the first three letters of an English place
|
||||
name identifying each zone and append 'T', 'ST', etc.
|
||||
as before; e.g. 'VLAST' for VLAdivostok Summer Time.
|
||||
|
||||
Use UT (with time zone abbreviation '-00') for locations while
|
||||
uninhabited. The leading '-' is a flag that the time
|
||||
zone is in some sense undefined; this notation is
|
||||
derived from Internet RFC 3339.
|
||||
|
||||
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 '-0600' instead of time zone
|
||||
abbreviations like 'CST'; this avoids the ambiguity.
|
||||
|
||||
|
||||
----- Accuracy of the tz database -----
|
||||
|
||||
The tz database is not authoritative, and it surely has errors.
|
||||
Corrections are welcome and encouraged; see the file CONTRIBUTING.
|
||||
Users requiring authoritative data should consult national standards
|
||||
bodies and the references cited in the database's comments.
|
||||
|
||||
Errors in the tz database arise from many sources:
|
||||
|
||||
* The tz database predicts future time stamps, and current predictions
|
||||
will be incorrect after future governments change the rules.
|
||||
For example, if today someone schedules a meeting for 13:00 next
|
||||
October 1, Casablanca time, and tomorrow Morocco changes its
|
||||
daylight saving rules, software can mess up after the rule change
|
||||
if it blithely relies on conversions made before the change.
|
||||
|
||||
* The pre-1970 entries in this database cover only a tiny sliver of how
|
||||
clocks actually behaved; the vast majority of the necessary
|
||||
information was lost or never recorded. Thousands more zones would
|
||||
be needed if the tz database's scope were extended to cover even
|
||||
just the known or guessed history of standard time; for example,
|
||||
the current single entry for France would need to split into dozens
|
||||
of entries, perhaps hundreds. And in most of the world even this
|
||||
approach would be misleading due to widespread disagreement or
|
||||
indifference about what times should be observed. In her 2015 book
|
||||
"The Global Transformation of Time, 1870-1950", Vanessa Ogle writes
|
||||
"Outside of Europe and North America there was no system of time
|
||||
zones at all, often not even a stable landscape of mean times,
|
||||
prior to the middle decades of the twentieth century". See:
|
||||
Timothy Shenk, Booked: A Global History of Time. Dissent 2015-12-17
|
||||
https://www.dissentmagazine.org/blog/booked-a-global-history-of-time-vanessa-ogle
|
||||
|
||||
* Most of the pre-1970 data entries come from unreliable sources, often
|
||||
astrology books that lack citations and whose compilers evidently
|
||||
invented entries when the true facts were unknown, without
|
||||
reporting which entries were known and which were invented.
|
||||
These books often contradict each other or give implausible entries,
|
||||
and on the rare occasions when they are checked they are
|
||||
typically found to be incorrect.
|
||||
|
||||
* For the UK the tz database relies on years of first-class work done by
|
||||
Joseph Myers and others; see <http://www.polyomino.org.uk/british-time/>.
|
||||
Other countries are not done nearly as well.
|
||||
|
||||
* Sometimes, different people in the same city would maintain clocks
|
||||
that differed significantly. Railway time was used by railroad
|
||||
companies (which did not always agree with each other),
|
||||
church-clock time was used for birth certificates, etc.
|
||||
Often this was merely common practice, but sometimes it was set by law.
|
||||
For example, from 1891 to 1911 the UT offset in France was legally
|
||||
0:09:21 outside train stations and 0:04:21 inside.
|
||||
|
||||
* Although a named location in the tz database stands for the
|
||||
containing region, its pre-1970 data entries are often accurate for
|
||||
only a small subset of that region. For example, Europe/London
|
||||
stands for the United Kingdom, but its pre-1847 times are valid
|
||||
only for locations that have London's exact meridian, and its 1847
|
||||
transition to GMT is known to be valid only for the L&NW and the
|
||||
Caledonian railways.
|
||||
|
||||
* The tz database does not record the earliest time for which a zone's
|
||||
data entries are thereafter valid for every location in the region.
|
||||
For example, Europe/London is valid for all locations in its
|
||||
region after GMT was made the standard time, but the date of
|
||||
standardization (1880-08-02) is not in the tz database, other than
|
||||
in commentary. For many zones the earliest time of validity is
|
||||
unknown.
|
||||
|
||||
* The tz database does not record a region's boundaries, and in many
|
||||
cases the boundaries are not known. For example, the zone
|
||||
America/Kentucky/Louisville represents a region around the city of
|
||||
Louisville, the boundaries of which are unclear.
|
||||
|
||||
* Changes that are modeled as instantaneous transitions in the tz
|
||||
database were often spread out over hours, days, or even decades.
|
||||
|
||||
* Even if the time is specified by law, locations sometimes
|
||||
deliberately flout the law.
|
||||
|
||||
* Early timekeeping practices, even assuming perfect clocks, were
|
||||
often not specified to the accuracy that the tz database requires.
|
||||
|
||||
* Sometimes historical timekeeping was specified more precisely
|
||||
than what the tz database can handle. For example, from 1909 to
|
||||
1937 Netherlands clocks were legally UT +00:19:32.13, but the tz
|
||||
database cannot represent the fractional second.
|
||||
|
||||
* Even when all the timestamp transitions recorded by the tz database
|
||||
are correct, the tz rules that generate them may not faithfully
|
||||
reflect the historical rules. For example, from 1922 until World
|
||||
War II the UK moved clocks forward the day following the third
|
||||
Saturday in April unless that was Easter, in which case it moved
|
||||
clocks forward the previous Sunday. Because the tz database has no
|
||||
way to specify Easter, these exceptional years are entered as
|
||||
separate tz Rule lines, even though the legal rules did not change.
|
||||
|
||||
* The tz database models pre-standard time using the proleptic Gregorian
|
||||
calendar and local mean time (LMT), but many people used other
|
||||
calendars and other timescales. For example, the Roman Empire used
|
||||
the Julian calendar, and had 12 varying-length daytime hours with a
|
||||
non-hour-based system at night.
|
||||
|
||||
* Early clocks were less reliable, and data entries do not represent
|
||||
this unreliability.
|
||||
|
||||
* As for leap seconds, civil time was not based on atomic time before
|
||||
1972, and we don't know the history of earth's rotation accurately
|
||||
enough to map SI seconds to historical solar time to more than
|
||||
about one-hour accuracy. See: Morrison LV, Stephenson FR.
|
||||
Historical values of the Earth's clock error Delta T and the
|
||||
calculation of eclipses. J Hist Astron. 2004;35:327-36
|
||||
<http://adsabs.harvard.edu/full/2004JHA....35..327M>;
|
||||
Historical values of the Earth's clock error. J Hist Astron. 2005;36:339
|
||||
<http://adsabs.harvard.edu/full/2005JHA....36..339M>.
|
||||
|
||||
* The relationship between POSIX time (that is, UTC but ignoring leap
|
||||
seconds) and UTC is not agreed upon after 1972. Although the POSIX
|
||||
clock officially stops during an inserted leap second, at least one
|
||||
proposed standard has it jumping back a second instead; and in
|
||||
practice POSIX clocks more typically either progress glacially during
|
||||
a leap second, or are slightly slowed while near a leap second.
|
||||
|
||||
* The tz database does not represent how uncertain its information is.
|
||||
Ideally it would contain information about when data entries are
|
||||
incomplete or dicey. Partial temporal knowledge is a field of
|
||||
active research, though, and it's not clear how to apply it here.
|
||||
|
||||
In short, many, perhaps most, of the tz database's pre-1970 and future
|
||||
time stamps are either wrong or misleading. Any attempt to pass the
|
||||
tz database off as the definition of time should be unacceptable to
|
||||
anybody who cares about the facts. In particular, the tz database's
|
||||
LMT offsets should not be considered meaningful, and should not prompt
|
||||
creation of zones merely because two locations differ in LMT or
|
||||
transitioned to standard time at different dates.
|
||||
|
||||
|
||||
----- Time and date functions -----
|
||||
|
||||
The tz code contains time and date functions that are upwards
|
||||
compatible with those of POSIX.
|
||||
|
||||
POSIX has the following properties and limitations.
|
||||
|
||||
* In POSIX, time display in a process is controlled by the
|
||||
environment variable TZ. Unfortunately, the POSIX TZ string takes
|
||||
a form that is hard to describe and is error-prone in practice.
|
||||
Also, POSIX TZ strings can't deal with other (for example, Israeli)
|
||||
daylight saving time rules, or situations where more than two
|
||||
time zone abbreviations are used in an area.
|
||||
|
||||
The POSIX TZ string takes the following form:
|
||||
|
||||
stdoffset[dst[offset][,date[/time],date[/time]]]
|
||||
|
||||
where:
|
||||
|
||||
std and dst
|
||||
are 3 or more characters specifying the standard
|
||||
and daylight saving time (DST) zone names.
|
||||
Starting with POSIX.1-2001, std and dst may also be
|
||||
in a quoted form like "<UTC+10>"; this allows
|
||||
"+" and "-" in the names.
|
||||
offset
|
||||
is of the form '[+-]hh:[mm[:ss]]' and specifies the
|
||||
offset west of UT. 'hh' may be a single digit; 0<=hh<=24.
|
||||
The default DST offset is one hour ahead of standard time.
|
||||
date[/time],date[/time]
|
||||
specifies the beginning and end of DST. If this is absent,
|
||||
the system supplies its own rules for DST, and these can
|
||||
differ from year to year; typically US DST rules are used.
|
||||
time
|
||||
takes the form 'hh:[mm[:ss]]' and defaults to 02:00.
|
||||
This is the same format as the offset, except that a
|
||||
leading '+' or '-' is not allowed.
|
||||
date
|
||||
takes one of the following forms:
|
||||
Jn (1<=n<=365)
|
||||
origin-1 day number not counting February 29
|
||||
n (0<=n<=365)
|
||||
origin-0 day number counting February 29 if present
|
||||
Mm.n.d (0[Sunday]<=d<=6[Saturday], 1<=n<=5, 1<=m<=12)
|
||||
for the dth day of week n of month m of the year,
|
||||
where week 1 is the first week in which day d appears,
|
||||
and '5' stands for the last week in which day d appears
|
||||
(which may be either the 4th or 5th week).
|
||||
Typically, this is the only useful form;
|
||||
the n and Jn forms are rarely used.
|
||||
|
||||
Here is an example POSIX TZ string, for US Pacific time using rules
|
||||
appropriate from 1987 through 2006:
|
||||
|
||||
TZ='PST8PDT,M4.1.0/02:00,M10.5.0/02:00'
|
||||
|
||||
This POSIX TZ string is hard to remember, and mishandles time stamps
|
||||
before 1987 and after 2006. With this package you can use this
|
||||
instead:
|
||||
|
||||
TZ='America/Los_Angeles'
|
||||
|
||||
* POSIX does not define the exact meaning of TZ values like "EST5EDT".
|
||||
Typically the current US DST rules are used to interpret such values,
|
||||
but this means that the US DST rules are compiled into each program
|
||||
that does time conversion. This means that when US time conversion
|
||||
rules change (as in the United States in 1987), all programs that
|
||||
do time conversion must be recompiled to ensure proper results.
|
||||
|
||||
* The TZ environment variable is process-global, which makes it hard
|
||||
to write efficient, thread-safe applications that need access
|
||||
to multiple time zones.
|
||||
|
||||
* In POSIX, there's no tamper-proof way for a process to learn the
|
||||
system's best idea of local wall clock. (This is important for
|
||||
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
|
||||
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.)
|
||||
|
||||
* POSIX provides no convenient and efficient way to determine the UT
|
||||
offset and time zone abbreviation of arbitrary time stamps,
|
||||
particularly for time zone settings that do not fit into the
|
||||
POSIX model.
|
||||
|
||||
* POSIX requires that systems ignore leap seconds.
|
||||
|
||||
* The tz code attempts to support all the time_t implementations
|
||||
allowed by POSIX. The time_t type represents a nonnegative count of
|
||||
seconds since 1970-01-01 00:00:00 UTC, ignoring leap seconds.
|
||||
In practice, time_t is usually a signed 64- or 32-bit integer; 32-bit
|
||||
signed time_t values stop working after 2038-01-19 03:14:07 UTC, so
|
||||
new implementations these days typically use a signed 64-bit integer.
|
||||
Unsigned 32-bit integers are used on one or two platforms,
|
||||
and 36-bit and 40-bit integers are also used occasionally.
|
||||
Although earlier POSIX versions allowed time_t to be a
|
||||
floating-point type, this was not supported by any practical
|
||||
systems, and POSIX.1-2013 and the tz code both require time_t
|
||||
to be an integer type.
|
||||
|
||||
These are the extensions that have been made to the POSIX functions:
|
||||
|
||||
* The "TZ" environment variable is used in generating the name of a file
|
||||
from which time zone information is read (or is interpreted a la
|
||||
POSIX); "TZ" is no longer constrained to be a three-letter time zone
|
||||
name followed by a number of hours and an optional three-letter
|
||||
daylight time zone name. The daylight saving time rules to be used
|
||||
for a particular time zone are encoded in the time zone file;
|
||||
the format of the file allows U.S., Australian, and other rules to be
|
||||
encoded, and allows for situations where more than two time zone
|
||||
abbreviations are used.
|
||||
|
||||
It was recognized that allowing the "TZ" environment variable to
|
||||
take on values such as "America/New_York" might cause "old" programs
|
||||
(that expect "TZ" to have a certain form) to operate incorrectly;
|
||||
consideration was given to using some other environment variable
|
||||
(for example, "TIMEZONE") to hold the string used to generate the
|
||||
time zone information file name. In the end, however, it was decided
|
||||
to continue using "TZ": it is widely used for time zone purposes;
|
||||
separately maintaining both "TZ" and "TIMEZONE" seemed a nuisance;
|
||||
and systems where "new" forms of "TZ" might cause problems can simply
|
||||
use TZ values such as "EST5EDT" which can be used both by
|
||||
"new" programs (a la POSIX) and "old" programs (as zone names and
|
||||
offsets).
|
||||
|
||||
* The code supports platforms with a UT offset member in struct tm,
|
||||
e.g., tm_gmtoff.
|
||||
|
||||
* The code supports platforms with a time zone abbreviation member in
|
||||
struct tm, e.g., tm_zone.
|
||||
|
||||
* Since the "TZ" environment variable can now be used to control time
|
||||
conversion, the "daylight" and "timezone" variables are no longer
|
||||
needed. (These variables are defined and set by "tzset"; however, their
|
||||
values will not be used by "localtime.")
|
||||
|
||||
* Functions tzalloc, tzfree, localtime_rz, and mktime_z for
|
||||
more-efficient thread-safe applications that need to use
|
||||
multiple time zones. The tzalloc and tzfree functions
|
||||
allocate and free objects of type timezone_t, and localtime_rz
|
||||
and mktime_z are like localtime_r and mktime with an extra
|
||||
timezone_t argument. The functions were inspired by NetBSD.
|
||||
|
||||
* A function "tzsetwall" has been added to arrange for the system's
|
||||
best approximation to local wall clock time to be delivered by
|
||||
subsequent calls to "localtime." Source code for portable
|
||||
applications that "must" run on local wall clock time should call
|
||||
"tzsetwall();" if such code is moved to "old" systems that don't
|
||||
provide tzsetwall, you won't be able to generate an executable program.
|
||||
(These time zone functions also arrange for local wall clock time to be
|
||||
used if tzset is called - directly or indirectly - and there's no "TZ"
|
||||
environment variable; portable applications should not, however, rely
|
||||
on this behavior since it's not the way SVR2 systems behave.)
|
||||
|
||||
* Negative time_t values are supported, on systems where time_t is signed.
|
||||
|
||||
* These functions can account for leap seconds, thanks to Bradley White.
|
||||
|
||||
Points of interest to folks with other systems:
|
||||
|
||||
* Code compatible with this package is already part of many platforms,
|
||||
including GNU/Linux, Android, the BSDs, Chromium OS, Cygwin, AIX, iOS,
|
||||
BlackBery 10, macOS, Microsoft Windows, OpenVMS, and Solaris.
|
||||
On such hosts, the primary use of this package
|
||||
is to update obsolete time zone rule tables.
|
||||
To do this, you may need to compile the time zone compiler
|
||||
'zic' supplied with this package instead of using the system 'zic',
|
||||
since the format of zic's input is occasionally extended,
|
||||
and a platform may still be shipping an older zic.
|
||||
|
||||
* The UNIX Version 7 "timezone" function is not present in this package;
|
||||
it's impossible to reliably map timezone's arguments (a "minutes west
|
||||
of GMT" value and a "daylight saving time in effect" flag) to a
|
||||
time zone abbreviation, and we refuse to guess.
|
||||
Programs that in the past used the timezone function may now examine
|
||||
tzname[localtime(&clock)->tm_isdst] to learn the correct time
|
||||
zone abbreviation to use. Alternatively, use
|
||||
localtime(&clock)->tm_zone if this has been enabled.
|
||||
|
||||
* The 4.2BSD gettimeofday function is not used in this package.
|
||||
This formerly let users obtain the current UTC offset and DST flag,
|
||||
but this functionality was removed in later versions of BSD.
|
||||
|
||||
* In SVR2, time conversion fails for near-minimum or near-maximum
|
||||
time_t values when doing conversions for places that don't use UT.
|
||||
This package takes care to do these conversions correctly.
|
||||
A comment in the source code tells how to get compatibly wrong
|
||||
results.
|
||||
|
||||
The functions that are conditionally compiled if STD_INSPIRED is defined
|
||||
should, at this point, be looked on primarily as food for thought. They are
|
||||
not in any sense "standard compatible" - some are not, in fact, specified in
|
||||
*any* standard. They do, however, represent responses of various authors to
|
||||
standardization proposals.
|
||||
|
||||
Other time conversion proposals, in particular the one developed by folks at
|
||||
Hewlett Packard, offer a wider selection of functions that provide capabilities
|
||||
beyond those provided here. The absence of such functions from this package
|
||||
is not meant to discourage the development, standardization, or use of such
|
||||
functions. Rather, their absence reflects the decision to make this package
|
||||
contain valid extensions to POSIX, to ensure its broad acceptability. If
|
||||
more powerful time conversion functions can be standardized, so much the
|
||||
better.
|
||||
|
||||
|
||||
----- Interface stability -----
|
||||
|
||||
The tz code and data supply the following interfaces:
|
||||
|
||||
* A set of zone names as per "Names of time zone rules" above.
|
||||
|
||||
* Library functions described in "Time and date functions" above.
|
||||
|
||||
* The programs tzselect, zdump, and zic, documented in their man pages.
|
||||
|
||||
* The format of zic input files, documented in the zic man page.
|
||||
|
||||
* The format of zic output files, documented in the tzfile man page.
|
||||
|
||||
* The format of zone table files, documented in zone1970.tab.
|
||||
|
||||
* The format of the country code file, documented in iso3166.tab.
|
||||
|
||||
When these interfaces are changed, an effort is made to preserve
|
||||
backward compatibility. For example, tz data files typically do not
|
||||
rely on recently-added zic features, so that users can run older zic
|
||||
versions to process newer data files.
|
||||
|
||||
Interfaces not listed above are less stable. For example, users
|
||||
should not rely on particular UT offsets or abbreviations for time
|
||||
stamps, as data entries are often based on guesswork and these guesses
|
||||
may be corrected or improved.
|
||||
|
||||
|
||||
----- Calendrical issues -----
|
||||
|
||||
Calendrical issues are a bit out of scope for a time zone database,
|
||||
but they indicate the sort of problems that we would run into if we
|
||||
extended the time zone database further into the past. An excellent
|
||||
resource in this area is Nachum Dershowitz and Edward M. Reingold,
|
||||
Calendrical Calculations: Third Edition, Cambridge University Press (2008)
|
||||
<http://emr.cs.iit.edu/home/reingold/calendar-book/third-edition/>.
|
||||
Other information and sources are given below. They sometimes disagree.
|
||||
|
||||
|
||||
France
|
||||
|
||||
Gregorian calendar adopted 1582-12-20.
|
||||
French Revolutionary calendar used 1793-11-24 through 1805-12-31,
|
||||
and (in Paris only) 1871-05-06 through 1871-05-23.
|
||||
|
||||
|
||||
Russia
|
||||
|
||||
From Chris Carrier (1996-12-02):
|
||||
On 1929-10-01 the Soviet Union instituted an "Eternal Calendar"
|
||||
with 30-day months plus 5 holidays, with a 5-day week.
|
||||
On 1931-12-01 it changed to a 6-day week; in 1934 it reverted to the
|
||||
Gregorian calendar while retaining the 6-day week; on 1940-06-27 it
|
||||
reverted to the 7-day week. With the 6-day week the usual days
|
||||
off were the 6th, 12th, 18th, 24th and 30th of the month.
|
||||
(Source: Evitiar Zerubavel, _The Seven Day Circle_)
|
||||
|
||||
|
||||
Mark Brader reported a similar story in "The Book of Calendars", edited
|
||||
by Frank Parise (1982, Facts on File, ISBN 0-8719-6467-8), page 377. But:
|
||||
|
||||
From: Petteri Sulonen (via Usenet)
|
||||
Date: 14 Jan 1999 00:00:00 GMT
|
||||
...
|
||||
|
||||
If your source is correct, how come documents between 1929 and 1940 were
|
||||
still dated using the conventional, Gregorian calendar?
|
||||
|
||||
I can post a scan of a document dated December 1, 1934, signed by
|
||||
Yenukidze, the secretary, on behalf of Kalinin, the President of the
|
||||
Executive Committee of the Supreme Soviet, if you like.
|
||||
|
||||
|
||||
|
||||
Sweden (and Finland)
|
||||
|
||||
From: Mark Brader
|
||||
Subject: Re: Gregorian reform - a part of locale?
|
||||
<news:1996Jul6.012937.29190@sq.com>
|
||||
Date: 1996-07-06
|
||||
|
||||
In 1700, Denmark made the transition from Julian to Gregorian. Sweden
|
||||
decided to *start* a transition in 1700 as well, but rather than have one of
|
||||
those unsightly calendar gaps :-), they simply decreed that the next leap
|
||||
year after 1696 would be in 1744 - putting the whole country on a calendar
|
||||
different from both Julian and Gregorian for a period of 40 years.
|
||||
|
||||
However, in 1704 something went wrong and the plan was not carried through;
|
||||
they did, after all, have a leap year that year. And one in 1708. In 1712
|
||||
they gave it up and went back to Julian, putting 30 days in February that
|
||||
year!...
|
||||
|
||||
Then in 1753, Sweden made the transition to Gregorian in the usual manner,
|
||||
getting there only 13 years behind the original schedule.
|
||||
|
||||
(A previous posting of this story was challenged, and Swedish readers
|
||||
produced the following references to support it: "Tideräkning och historia"
|
||||
by Natanael Beckman (1924) and "Tid, en bok om tideräkning och
|
||||
kalenderväsen" by Lars-Olof Lodén (1968).
|
||||
|
||||
|
||||
Grotefend's data
|
||||
|
||||
From: "Michael Palmer" [with one obvious typo fixed]
|
||||
Subject: Re: Gregorian Calendar (was Re: Another FHC related question
|
||||
Newsgroups: soc.genealogy.german
|
||||
Date: Tue, 9 Feb 1999 02:32:48 -800
|
||||
...
|
||||
|
||||
The following is a(n incomplete) listing, arranged chronologically, of
|
||||
European states, with the date they converted from the Julian to the
|
||||
Gregorian calendar:
|
||||
|
||||
04/15 Oct 1582 - Italy (with exceptions), Spain, Portugal, Poland (Roman
|
||||
Catholics and Danzig only)
|
||||
09/20 Dec 1582 - France, Lorraine
|
||||
|
||||
21 Dec 1582/
|
||||
01 Jan 1583 - Holland, Brabant, Flanders, Hennegau
|
||||
10/21 Feb 1583 - bishopric of Liege (Lüttich)
|
||||
13/24 Feb 1583 - bishopric of Augsburg
|
||||
04/15 Oct 1583 - electorate of Trier
|
||||
05/16 Oct 1583 - Bavaria, bishoprics of Freising, Eichstedt, Regensburg,
|
||||
Salzburg, Brixen
|
||||
13/24 Oct 1583 - Austrian Oberelsaß and Breisgau
|
||||
20/31 Oct 1583 - bishopric of Basel
|
||||
02/13 Nov 1583 - duchy of Jülich-Berg
|
||||
02/13 Nov 1583 - electorate and city of Köln
|
||||
04/15 Nov 1583 - bishopric of Würzburg
|
||||
11/22 Nov 1583 - electorate of Mainz
|
||||
16/27 Nov 1583 - bishopric of Strassburg and the margraviate of Baden
|
||||
17/28 Nov 1583 - bishopric of Münster and duchy of Cleve
|
||||
14/25 Dec 1583 - Steiermark
|
||||
|
||||
06/17 Jan 1584 - Austria and Bohemia
|
||||
11/22 Jan 1584 - Lucerne, Uri, Schwyz, Zug, Freiburg, Solothurn
|
||||
12/23 Jan 1584 - Silesia and the Lausitz
|
||||
22 Jan/
|
||||
02 Feb 1584 - Hungary (legally on 21 Oct 1587)
|
||||
Jun 1584 - Unterwalden
|
||||
01/12 Jul 1584 - duchy of Westfalen
|
||||
|
||||
16/27 Jun 1585 - bishopric of Paderborn
|
||||
|
||||
14/25 Dec 1590 - Transylvania
|
||||
|
||||
22 Aug/
|
||||
02 Sep 1612 - duchy of Prussia
|
||||
|
||||
13/24 Dec 1614 - Pfalz-Neuburg
|
||||
|
||||
1617 - duchy of Kurland (reverted to the Julian calendar in
|
||||
1796)
|
||||
|
||||
1624 - bishopric of Osnabrück
|
||||
|
||||
1630 - bishopric of Minden
|
||||
|
||||
15/26 Mar 1631 - bishopric of Hildesheim
|
||||
|
||||
1655 - Kanton Wallis
|
||||
|
||||
05/16 Feb 1682 - city of Strassburg
|
||||
|
||||
18 Feb/
|
||||
01 Mar 1700 - Protestant Germany (including Swedish possessions in
|
||||
Germany), Denmark, Norway
|
||||
30 Jun/
|
||||
12 Jul 1700 - Gelderland, Zutphen
|
||||
10 Nov/
|
||||
12 Dec 1700 - Utrecht, Overijssel
|
||||
|
||||
31 Dec 1700/
|
||||
12 Jan 1701 - Friesland, Groningen, Zürich, Bern, Basel, Geneva,
|
||||
Turgau, and Schaffhausen
|
||||
|
||||
1724 - Glarus, Appenzell, and the city of St. Gallen
|
||||
|
||||
01 Jan 1750 - Pisa and Florence
|
||||
|
||||
02/14 Sep 1752 - Great Britain
|
||||
|
||||
17 Feb/
|
||||
01 Mar 1753 - Sweden
|
||||
|
||||
1760-1812 - Graubünden
|
||||
|
||||
The Russian empire (including Finland and the Baltic states) did not
|
||||
convert to the Gregorian calendar until the Soviet revolution of 1917.
|
||||
|
||||
Source: H. Grotefend, _Taschenbuch der Zeitrechnung des deutschen
|
||||
Mittelalters und der Neuzeit_, herausgegeben von Dr. O. Grotefend
|
||||
(Hannover: Hahnsche Buchhandlung, 1941), pp. 26-28.
|
||||
|
||||
|
||||
----- Time and time zones on Mars -----
|
||||
|
||||
Some people's work schedules use Mars time. Jet Propulsion Laboratory
|
||||
(JPL) coordinators have kept Mars time on and off at least since 1997
|
||||
for the Mars Pathfinder mission. Some of their family members have
|
||||
also adapted to Mars time. Dozens of special Mars watches were built
|
||||
for JPL workers who kept Mars time during the Mars Exploration
|
||||
Rovers mission (2004). These timepieces look like normal Seikos and
|
||||
Citizens but use Mars seconds rather than terrestrial seconds.
|
||||
|
||||
A Mars solar day is called a "sol" and has a mean period equal to
|
||||
about 24 hours 39 minutes 35.244 seconds in terrestrial time. It is
|
||||
divided into a conventional 24-hour clock, so each Mars second equals
|
||||
about 1.02749125 terrestrial seconds.
|
||||
|
||||
The prime meridian of Mars goes through the center of the crater
|
||||
Airy-0, named in honor of the British astronomer who built the
|
||||
Greenwich telescope that defines Earth's prime meridian. Mean solar
|
||||
time on the Mars prime meridian is called Mars Coordinated Time (MTC).
|
||||
|
||||
Each landed mission on Mars has adopted a different reference for
|
||||
solar time keeping, so there is no real standard for Mars time zones.
|
||||
For example, the Mars Exploration Rover project (2004) defined two
|
||||
time zones "Local Solar Time A" and "Local Solar Time B" for its two
|
||||
missions, each zone designed so that its time equals local true solar
|
||||
time at approximately the middle of the nominal mission. Such a "time
|
||||
zone" is not particularly suited for any application other than the
|
||||
mission itself.
|
||||
|
||||
Many calendars have been proposed for Mars, but none have achieved
|
||||
wide acceptance. Astronomers often use Mars Sol Date (MSD) which is a
|
||||
sequential count of Mars solar days elapsed since about 1873-12-29
|
||||
12:00 GMT.
|
||||
|
||||
The tz database does not currently support Mars time, but it is
|
||||
documented here in the hopes that support will be added eventually.
|
||||
|
||||
Sources:
|
||||
|
||||
Michael Allison and Robert Schmunk,
|
||||
"Technical Notes on Mars Solar Time as Adopted by the Mars24 Sunclock"
|
||||
<http://www.giss.nasa.gov/tools/mars24/help/notes.html> (2012-08-08).
|
||||
|
||||
Jia-Rui Chong, "Workdays Fit for a Martian", Los Angeles Times
|
||||
<http://articles.latimes.com/2004/jan/14/science/sci-marstime14>
|
||||
(2004-01-14), pp A1, A20-A21.
|
||||
|
||||
Tom Chmielewski, "Jet Lag Is Worse on Mars", The Atlantic (2015-02-26)
|
||||
<http://www.theatlantic.com/technology/archive/2015/02/jet-lag-is-worse-on-mars/386033/>
|
||||
|
||||
-----
|
||||
|
||||
This file is in the public domain, so clarified as of 2009-05-17 by
|
||||
Arthur David Olson.
|
||||
|
||||
-----
|
||||
Local Variables:
|
||||
coding: utf-8
|
||||
End:
|
||||
@ -64,13 +64,18 @@
|
||||
# Background:
|
||||
# http://www.timeanddate.com/news/time/antartica-time-changes-2010.html
|
||||
|
||||
# From Steffen Thorsen (2016-10-28):
|
||||
# Australian Antarctica Division informed us that Casey changed time
|
||||
# zone to UTC+11 in "the morning of 22nd October 2016".
|
||||
|
||||
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
|
||||
Zone Antarctica/Casey 0 - -00 1969
|
||||
8:00 - +08 2009 Oct 18 2:00
|
||||
11:00 - +11 2010 Mar 5 2:00
|
||||
8:00 - +08 2011 Oct 28 2:00
|
||||
11:00 - +11 2012 Feb 21 17:00u
|
||||
8:00 - +08
|
||||
8:00 - +08 2016 Oct 22
|
||||
11:00 - +11
|
||||
Zone Antarctica/Davis 0 - -00 1957 Jan 13
|
||||
7:00 - +07 1964 Nov
|
||||
0 - -00 1969 Feb
|
||||
|
||||
17
asia
17
asia
@ -771,9 +771,19 @@ Zone Asia/Macau 7:34:20 - LMT 1912 Jan 1
|
||||
###############################################################################
|
||||
|
||||
# Cyprus
|
||||
#
|
||||
|
||||
# Milne says the Eastern Telegraph Company used 2:14:00. Stick with LMT.
|
||||
# IATA SSIM (1998-09) has Cyprus using EU rules for the first time.
|
||||
|
||||
# From Paul Eggert (2016-09-09):
|
||||
# Yesterday's Cyprus Mail reports that Northern Cyprus followed Turkey's
|
||||
# lead and switched from +02/+03 to +03 year-round.
|
||||
# http://cyprus-mail.com/2016/09/08/two-time-zones-cyprus-turkey-will-not-turn-clocks-back-next-month/
|
||||
#
|
||||
# From Even Scharning (2016-10-31):
|
||||
# Looks like the time zone split in Cyprus went through last night.
|
||||
# http://cyprus-mail.com/2016/10/30/cyprus-new-division-two-time-zones-now-reality/
|
||||
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
Rule Cyprus 1975 only - Apr 13 0:00 1:00 S
|
||||
Rule Cyprus 1975 only - Oct 12 0:00 0 -
|
||||
@ -788,7 +798,10 @@ Rule Cyprus 1981 1998 - Mar lastSun 0:00 1:00 S
|
||||
Zone Asia/Nicosia 2:13:28 - LMT 1921 Nov 14
|
||||
2:00 Cyprus EE%sT 1998 Sep
|
||||
2:00 EUAsia EE%sT
|
||||
# IATA SSIM (1998-09) has Cyprus using EU rules for the first time.
|
||||
Zone Asia/Famagusta 2:15:48 - LMT 1921 Nov 14
|
||||
2:00 Cyprus EE%sT 1998 Sep
|
||||
2:00 EUAsia EE%sT 2016 Sep 8
|
||||
3:00 - +03
|
||||
|
||||
# Classically, Cyprus belongs to Asia; e.g. see Herodotus, Histories, I.72.
|
||||
# However, for various reasons many users expect to find it under Europe.
|
||||
|
||||
18
australasia
18
australasia
@ -702,11 +702,13 @@ Rule Tonga 1999 only - Oct 7 2:00s 1:00 S
|
||||
Rule Tonga 2000 only - Mar 19 2:00s 0 -
|
||||
Rule Tonga 2000 2001 - Nov Sun>=1 2:00 1:00 S
|
||||
Rule Tonga 2001 2002 - Jan lastSun 2:00 0 -
|
||||
Rule Tonga 2016 max - Nov Sun>=1 2:00 1:00 S
|
||||
Rule Tonga 2017 max - Jan Sun>=15 3:00 0 -
|
||||
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
|
||||
Zone Pacific/Tongatapu 12:19:20 - LMT 1901
|
||||
12:20 - TOT 1941 # Tonga Time
|
||||
13:00 - TOT 1999
|
||||
13:00 Tonga TO%sT
|
||||
12:20 - +1220 1941
|
||||
13:00 - +13 1999
|
||||
13:00 Tonga +13/+14
|
||||
|
||||
# Tuvalu
|
||||
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
|
||||
@ -1712,9 +1714,17 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901
|
||||
# of January the standard time in the Kingdom shall be moved backward by one
|
||||
# hour to 1:00am.
|
||||
|
||||
# From Pulu 'Anau (2002-11-05):
|
||||
# From Pulu ʻAnau (2002-11-05):
|
||||
# The law was for 3 years, supposedly to get renewed. It wasn't.
|
||||
|
||||
# From Pulu ʻAnau (2016-10-27):
|
||||
# http://mic.gov.to/news-today/press-releases/6375-daylight-saving-set-to-run-from-6-november-2016-to-15-january-2017
|
||||
# Cannot find anyone who knows the rules, has seen the duration or has seen
|
||||
# the cabinet decision, but it appears we are following Fiji's rule set.
|
||||
#
|
||||
# From Tim Parenti (2016-10-26):
|
||||
# Assume Tonga will observe DST from the first Sunday in November at 02:00
|
||||
# through the third Sunday in January at 03:00, like Fiji, for now.
|
||||
|
||||
# Wake
|
||||
|
||||
|
||||
677
backzone
Normal file
677
backzone
Normal file
@ -0,0 +1,677 @@
|
||||
# Zones that go back beyond the scope of the tz database
|
||||
|
||||
# This file is in the public domain.
|
||||
|
||||
# This file is by no means authoritative; if you think you know
|
||||
# better, go ahead and edit it (and please send any changes to
|
||||
# tz@iana.org for general use in the future). For more, please see
|
||||
# the file CONTRIBUTING in the tz distribution.
|
||||
|
||||
|
||||
# From Paul Eggert (2014-10-31):
|
||||
|
||||
# This file contains data outside the normal scope of the tz database,
|
||||
# in that its zones do not differ from normal tz zones after 1970.
|
||||
# Links in this file point to zones in this file, superseding links in
|
||||
# the file 'backward'.
|
||||
|
||||
# Although zones in this file may be of some use for analyzing
|
||||
# pre-1970 time stamps, they are less reliable, cover only a tiny
|
||||
# sliver of the pre-1970 era, and cannot feasibly be improved to cover
|
||||
# most of the era. Because the zones are out of normal scope for the
|
||||
# database, less effort is put into maintaining this file. Many of
|
||||
# the zones were formerly in other source files, but were removed or
|
||||
# replaced by links as their data entries were questionable and/or they
|
||||
# differed from other zones only in pre-1970 time stamps.
|
||||
|
||||
# Unless otherwise specified, the source for data through 1990 is:
|
||||
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
|
||||
# San Diego: ACS Publications, Inc. (2003).
|
||||
# Unfortunately this book contains many errors and cites no sources.
|
||||
|
||||
# This file is not intended to be compiled standalone, as it
|
||||
# assumes rules from other files. In the tz distribution, use
|
||||
# 'make PACKRATDATA=backzone zones' to compile and install this file.
|
||||
|
||||
# Zones are sorted by zone name. Each zone is preceded by the
|
||||
# name of the country that the zone is in, along with any other
|
||||
# commentary and rules associated with the entry.
|
||||
#
|
||||
# As explained in the zic man page, the zone columns are:
|
||||
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
|
||||
|
||||
# Ethiopia
|
||||
# From Paul Eggert (2014-07-31):
|
||||
# Like the Swahili of Kenya and Tanzania, many Ethiopians keep a
|
||||
# 12-hour clock starting at our 06:00, so their "8 o'clock" is our
|
||||
# 02:00 or 14:00. Keep this in mind when you ask the time in Amharic.
|
||||
#
|
||||
# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time
|
||||
# zones between 1870 and 1890, that they merged to 38E50 (2:35:20) in
|
||||
# 1890, and that they switched to 3:00 on 1936-05-05. Perhaps 38E50
|
||||
# was for Adis Dera. Quite likely the Shanks data entries are wrong
|
||||
# anyway.
|
||||
Zone Africa/Addis_Ababa 2:34:48 - LMT 1870
|
||||
2:35:20 - ADMT 1936 May 5 # Adis Dera MT
|
||||
3:00 - EAT
|
||||
|
||||
# Eritrea
|
||||
Zone Africa/Asmara 2:35:32 - LMT 1870
|
||||
2:35:32 - AMT 1890 # Asmara Mean Time
|
||||
2:35:20 - ADMT 1936 May 5 # Adis Dera MT
|
||||
3:00 - EAT
|
||||
Link Africa/Asmara Africa/Asmera
|
||||
|
||||
# Mali (southern)
|
||||
Zone Africa/Bamako -0:32:00 - LMT 1912
|
||||
0:00 - GMT 1934 Feb 26
|
||||
-1:00 - WAT 1960 Jun 20
|
||||
0:00 - GMT
|
||||
|
||||
# Central African Republic
|
||||
Zone Africa/Bangui 1:14:20 - LMT 1912
|
||||
1:00 - WAT
|
||||
|
||||
# Gambia
|
||||
Zone Africa/Banjul -1:06:36 - LMT 1912
|
||||
-1:06:36 - BMT 1935 # Banjul Mean Time
|
||||
-1:00 - WAT 1964
|
||||
0:00 - GMT
|
||||
|
||||
# Malawi
|
||||
Zone Africa/Blantyre 2:20:00 - LMT 1903 Mar
|
||||
2:00 - CAT
|
||||
|
||||
# Republic of the Congo
|
||||
Zone Africa/Brazzaville 1:01:08 - LMT 1912
|
||||
1:00 - WAT
|
||||
|
||||
# Burundi
|
||||
Zone Africa/Bujumbura 1:57:28 - LMT 1890
|
||||
2:00 - CAT
|
||||
|
||||
# Guinea
|
||||
Zone Africa/Conakry -0:54:52 - LMT 1912
|
||||
0:00 - GMT 1934 Feb 26
|
||||
-1:00 - WAT 1960
|
||||
0:00 - GMT
|
||||
|
||||
# Senegal
|
||||
Zone Africa/Dakar -1:09:44 - LMT 1912
|
||||
-1:00 - WAT 1941 Jun
|
||||
0:00 - GMT
|
||||
|
||||
# Tanzania
|
||||
Zone Africa/Dar_es_Salaam 2:37:08 - LMT 1931
|
||||
3:00 - EAT 1948
|
||||
2:45 - BEAUT 1961
|
||||
3:00 - EAT
|
||||
|
||||
# Djibouti
|
||||
Zone Africa/Djibouti 2:52:36 - LMT 1911 Jul
|
||||
3:00 - EAT
|
||||
|
||||
# Cameroon
|
||||
# Whitman says they switched to 1:00 in 1920; go with Shanks & Pottenger.
|
||||
Zone Africa/Douala 0:38:48 - LMT 1912
|
||||
1:00 - WAT
|
||||
# Sierra Leone
|
||||
# From Paul Eggert (2014-08-12):
|
||||
# The following table is from Shanks & Pottenger, but it can't be right.
|
||||
# Whitman gives Mar 31 - Aug 31 for 1931 on.
|
||||
# The International Hydrographic Bulletin, 1932-33, p 63 says that
|
||||
# Sierra Leone would advance its clocks by 20 minutes on 1933-10-01.
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
Rule SL 1935 1942 - Jun 1 0:00 0:40 SLST
|
||||
Rule SL 1935 1942 - Oct 1 0:00 0 WAT
|
||||
Rule SL 1957 1962 - Jun 1 0:00 1:00 SLST
|
||||
Rule SL 1957 1962 - Sep 1 0:00 0 GMT
|
||||
Zone Africa/Freetown -0:53:00 - LMT 1882
|
||||
-0:53:00 - FMT 1913 Jun # Freetown Mean Time
|
||||
-1:00 SL %s 1957
|
||||
0:00 SL %s
|
||||
|
||||
# Botswana
|
||||
# From Paul Eggert (2013-02-21):
|
||||
# Milne says they were regulated by the Cape Town Signal in 1899;
|
||||
# assume they switched to 2:00 when Cape Town did.
|
||||
Zone Africa/Gaborone 1:43:40 - LMT 1885
|
||||
1:30 - SAST 1903 Mar
|
||||
2:00 - CAT 1943 Sep 19 2:00
|
||||
2:00 1:00 CAST 1944 Mar 19 2:00
|
||||
2:00 - CAT
|
||||
|
||||
# Zimbabwe
|
||||
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
|
||||
2:30 - BEAT 1948
|
||||
2:45 - BEAUT 1957
|
||||
3:00 - EAT
|
||||
|
||||
# Rwanda
|
||||
Zone Africa/Kigali 2:00:16 - LMT 1935 Jun
|
||||
2:00 - CAT
|
||||
|
||||
# Democratic Republic of the Congo (west)
|
||||
Zone Africa/Kinshasa 1:01:12 - LMT 1897 Nov 9
|
||||
1:00 - WAT
|
||||
|
||||
# Gabon
|
||||
Zone Africa/Libreville 0:37:48 - LMT 1912
|
||||
1:00 - WAT
|
||||
|
||||
# Togo
|
||||
Zone Africa/Lome 0:04:52 - LMT 1893
|
||||
0:00 - GMT
|
||||
|
||||
# Angola
|
||||
#
|
||||
# Shanks gives 1911-05-26 for the transition to WAT,
|
||||
# evidently confusing the date of the Portuguese decree
|
||||
# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
|
||||
# with the date that it took effect, namely 1912-01-01.
|
||||
#
|
||||
Zone Africa/Luanda 0:52:56 - LMT 1892
|
||||
0:52:04 - AOT 1912 Jan 1 # Angola Time
|
||||
1:00 - WAT
|
||||
|
||||
# Democratic Republic of the Congo (east)
|
||||
Zone Africa/Lubumbashi 1:49:52 - LMT 1897 Nov 9
|
||||
2:00 - CAT
|
||||
|
||||
# Zambia
|
||||
Zone Africa/Lusaka 1:53:08 - LMT 1903 Mar
|
||||
2:00 - CAT
|
||||
|
||||
# Equatorial Guinea
|
||||
#
|
||||
# Although Shanks says that Malabo switched from UT +00 to +01 on 1963-12-15,
|
||||
# a Google Books search says that London Calling, Issues 432-465 (1948), p 19,
|
||||
# says that Spanish Guinea was at +01 back then. The Shanks data entries
|
||||
# are most likely wrong, but we have nothing better; use them here for now.
|
||||
#
|
||||
Zone Africa/Malabo 0:35:08 - LMT 1912
|
||||
0:00 - GMT 1963 Dec 15
|
||||
1:00 - WAT
|
||||
|
||||
# Lesotho
|
||||
Zone Africa/Maseru 1:50:00 - LMT 1903 Mar
|
||||
2:00 - SAST 1943 Sep 19 2:00
|
||||
2:00 1:00 SAST 1944 Mar 19 2:00
|
||||
2:00 - SAST
|
||||
|
||||
# Swaziland
|
||||
Zone Africa/Mbabane 2:04:24 - LMT 1903 Mar
|
||||
2:00 - SAST
|
||||
|
||||
# Somalia
|
||||
Zone Africa/Mogadishu 3:01:28 - LMT 1893 Nov
|
||||
3:00 - EAT 1931
|
||||
2:30 - BEAT 1957
|
||||
3:00 - EAT
|
||||
|
||||
# Niger
|
||||
Zone Africa/Niamey 0:08:28 - LMT 1912
|
||||
-1:00 - WAT 1934 Feb 26
|
||||
0:00 - GMT 1960
|
||||
1:00 - WAT
|
||||
|
||||
# Mauritania
|
||||
Zone Africa/Nouakchott -1:03:48 - LMT 1912
|
||||
0:00 - GMT 1934 Feb 26
|
||||
-1:00 - WAT 1960 Nov 28
|
||||
0:00 - GMT
|
||||
|
||||
# Burkina Faso
|
||||
Zone Africa/Ouagadougou -0:06:04 - LMT 1912
|
||||
0:00 - GMT
|
||||
|
||||
# Benin
|
||||
# Whitman says they switched to 1:00 in 1946, not 1934;
|
||||
# go with Shanks & Pottenger.
|
||||
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
|
||||
|
||||
# Anguilla
|
||||
Zone America/Anguilla -4:12:16 - LMT 1912 Mar 2
|
||||
-4:00 - AST
|
||||
|
||||
# Antigua and Barbuda
|
||||
Zone America/Antigua -4:07:12 - LMT 1912 Mar 2
|
||||
-5:00 - EST 1951
|
||||
-4:00 - AST
|
||||
|
||||
# Chubut, Argentina
|
||||
# The name "Comodoro Rivadavia" exceeds the 14-byte POSIX limit.
|
||||
Zone America/Argentina/ComodRivadavia -4:30:00 - LMT 1894 Oct 31
|
||||
-4:16:48 - CMT 1920 May
|
||||
-4:00 - ART 1930 Dec
|
||||
-4:00 Arg AR%sT 1969 Oct 5
|
||||
-3:00 Arg AR%sT 1991 Mar 3
|
||||
-4:00 - WART 1991 Oct 20
|
||||
-3:00 Arg AR%sT 1999 Oct 3
|
||||
-4:00 Arg AR%sT 2000 Mar 3
|
||||
-3:00 - ART 2004 Jun 1
|
||||
-4:00 - WART 2004 Jun 20
|
||||
-3:00 - ART
|
||||
|
||||
# Aruba
|
||||
Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad
|
||||
-4:30 - ANT 1965 # Netherlands Antilles Time
|
||||
-4:00 - AST
|
||||
|
||||
# Cayman Is
|
||||
Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
|
||||
-5:07:11 - KMT 1912 Feb # Kingston Mean Time
|
||||
-5:00 - EST
|
||||
|
||||
# Canada
|
||||
Zone America/Coral_Harbour -5:32:40 - LMT 1884
|
||||
-5:00 NT_YK E%sT 1946
|
||||
-5:00 - EST
|
||||
|
||||
# Dominica
|
||||
Zone America/Dominica -4:05:36 - LMT 1911 Jul 1 0:01 # Roseau
|
||||
-4:00 - AST
|
||||
|
||||
# Baja California
|
||||
# See 'northamerica' for why this entry is here rather than there.
|
||||
Zone America/Ensenada -7:46:28 - LMT 1922 Jan 1 0:13:32
|
||||
-8:00 - PST 1927 Jun 10 23:00
|
||||
-7:00 - MST 1930 Nov 16
|
||||
-8:00 - PST 1942 Apr
|
||||
-7:00 - MST 1949 Jan 14
|
||||
-8:00 - PST 1996
|
||||
-8:00 Mexico P%sT
|
||||
|
||||
# Grenada
|
||||
Zone America/Grenada -4:07:00 - LMT 1911 Jul # St George's
|
||||
-4:00 - AST
|
||||
|
||||
# Guadeloupe
|
||||
Zone America/Guadeloupe -4:06:08 - LMT 1911 Jun 8 # Pointe-à-Pitre
|
||||
-4:00 - AST
|
||||
|
||||
# Canada
|
||||
#
|
||||
# From Paul Eggert (2015-03-24):
|
||||
# Since 1970 most of Quebec has been like Toronto; see
|
||||
# America/Toronto. However, earlier versions of the tz database
|
||||
# mistakenly relied on data from Shanks & Pottenger saying that Quebec
|
||||
# differed from Ontario after 1970, and the following rules and zone
|
||||
# were created for most of Quebec from the incorrect Shanks &
|
||||
# Pottenger data. The post-1970 entries have been corrected, but the
|
||||
# pre-1970 entries are unchecked and probably have errors.
|
||||
#
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
Rule Mont 1917 only - Mar 25 2:00 1:00 D
|
||||
Rule Mont 1917 only - Apr 24 0:00 0 S
|
||||
Rule Mont 1919 only - Mar 31 2:30 1:00 D
|
||||
Rule Mont 1919 only - Oct 25 2:30 0 S
|
||||
Rule Mont 1920 only - May 2 2:30 1:00 D
|
||||
Rule Mont 1920 1922 - Oct Sun>=1 2:30 0 S
|
||||
Rule Mont 1921 only - May 1 2:00 1:00 D
|
||||
Rule Mont 1922 only - Apr 30 2:00 1:00 D
|
||||
Rule Mont 1924 only - May 17 2:00 1:00 D
|
||||
Rule Mont 1924 1926 - Sep lastSun 2:30 0 S
|
||||
Rule Mont 1925 1926 - May Sun>=1 2:00 1:00 D
|
||||
Rule Mont 1927 1937 - Apr lastSat 24:00 1:00 D
|
||||
Rule Mont 1927 1937 - Sep lastSat 24:00 0 S
|
||||
Rule Mont 1938 1940 - Apr lastSun 0:00 1:00 D
|
||||
Rule Mont 1938 1939 - Sep lastSun 0:00 0 S
|
||||
Rule Mont 1946 1973 - Apr lastSun 2:00 1:00 D
|
||||
Rule Mont 1945 1948 - Sep lastSun 2:00 0 S
|
||||
Rule Mont 1949 1950 - Oct lastSun 2:00 0 S
|
||||
Rule Mont 1951 1956 - Sep lastSun 2:00 0 S
|
||||
Rule Mont 1957 1973 - Oct lastSun 2:00 0 S
|
||||
Zone America/Montreal -4:54:16 - LMT 1884
|
||||
-5:00 Mont E%sT 1918
|
||||
-5:00 Canada E%sT 1919
|
||||
-5:00 Mont E%sT 1942 Feb 9 2:00s
|
||||
-5:00 Canada E%sT 1946
|
||||
-5:00 Mont E%sT 1974
|
||||
-5:00 Canada E%sT
|
||||
|
||||
# Montserrat
|
||||
# From Paul Eggert (2006-03-22):
|
||||
# In 1995 volcanic eruptions forced evacuation of Plymouth, the capital.
|
||||
# world.gazetteer.com says Cork Hill is the most populous location now.
|
||||
Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Cork Hill
|
||||
-4:00 - AST
|
||||
|
||||
# Argentina
|
||||
# This entry was intended for the following areas, but has been superseded by
|
||||
# more detailed zones.
|
||||
# Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN), Chaco (CC),
|
||||
# Formosa (FM), La Pampa (LP), Chubut (CH)
|
||||
Zone America/Rosario -4:02:40 - LMT 1894 Nov
|
||||
-4:16:44 - CMT 1920 May
|
||||
-4:00 - ART 1930 Dec
|
||||
-4:00 Arg AR%sT 1969 Oct 5
|
||||
-3:00 Arg AR%sT 1991 Jul
|
||||
-3:00 - ART 1999 Oct 3 0:00
|
||||
-4:00 Arg AR%sT 2000 Mar 3 0:00
|
||||
-3:00 - ART
|
||||
|
||||
# St Kitts-Nevis
|
||||
Zone America/St_Kitts -4:10:52 - LMT 1912 Mar 2 # Basseterre
|
||||
-4:00 - AST
|
||||
|
||||
# St Lucia
|
||||
Zone America/St_Lucia -4:04:00 - LMT 1890 # Castries
|
||||
-4:04:00 - CMT 1912 # Castries Mean Time
|
||||
-4:00 - AST
|
||||
|
||||
# Virgin Is
|
||||
Zone America/St_Thomas -4:19:44 - LMT 1911 Jul # Charlotte Amalie
|
||||
-4:00 - AST
|
||||
|
||||
# St Vincent and the Grenadines
|
||||
Zone America/St_Vincent -4:04:56 - LMT 1890 # Kingstown
|
||||
-4:04:56 - KMT 1912 # Kingstown Mean Time
|
||||
-4:00 - AST
|
||||
|
||||
# British Virgin Is
|
||||
Zone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town
|
||||
-4:00 - AST
|
||||
|
||||
# McMurdo, Ross Island, since 1955-12
|
||||
Zone Antarctica/McMurdo 0 - -00 1956
|
||||
12:00 NZ NZ%sT
|
||||
Link Antarctica/McMurdo Antarctica/South_Pole
|
||||
|
||||
# Yemen
|
||||
# Milne says 2:59:54 was the meridian of the saluting battery at Aden,
|
||||
# and that Yemen was at 1:55:56, the meridian of the Hagia Sophia.
|
||||
Zone Asia/Aden 2:59:54 - LMT 1950
|
||||
3:00 - AST
|
||||
|
||||
# Bahrain
|
||||
Zone Asia/Bahrain 3:22:20 - LMT 1920 # Manamah
|
||||
4:00 - GST 1972 Jun
|
||||
3:00 - AST
|
||||
|
||||
# India
|
||||
#
|
||||
# From Paul Eggert (2014-09-06):
|
||||
# The 1876 Report of the Secretary of the [US] Navy, p 305 says that Madras
|
||||
# civil time was 5:20:57.3.
|
||||
#
|
||||
# From Paul Eggert (2014-08-21):
|
||||
# In tomorrow's The Hindu, Nitya Menon reports that India had two civil time
|
||||
# zones starting in 1884, one in Bombay and one in Calcutta, and that railways
|
||||
# used a third time zone based on Madras time (80 deg. 18'30" E). Also,
|
||||
# in 1881 Bombay briefly switched to Madras time, but switched back. See:
|
||||
# http://www.thehindu.com/news/cities/chennai/madras-375-when-madras-clocked-the-time/article6339393.ece
|
||||
#Zone Asia/Chennai [not enough info to complete]
|
||||
|
||||
# China
|
||||
# Long-shu Time (probably due to Long and Shu being two names of that area)
|
||||
# Guangxi, Guizhou, Hainan, Ningxia, Sichuan, Shaanxi, and Yunnan;
|
||||
# most of Gansu; west Inner Mongolia; west Qinghai; and the Guangdong
|
||||
# counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing,
|
||||
# Yangchun, Yangjiang, Yu'nan, and Yunfu.
|
||||
Zone Asia/Chongqing 7:06:20 - LMT 1928 # or Chungking
|
||||
7:00 - LONT 1980 May # Long-shu Time
|
||||
8:00 PRC C%sT
|
||||
Link Asia/Chongqing Asia/Chungking
|
||||
|
||||
# Vietnam
|
||||
# From Paul Eggert (2014-10-13):
|
||||
# See Asia/Ho_Chi_Minh for the source for this data.
|
||||
# Trần's book says the 1954-55 transition to 07:00 in Hanoi was in
|
||||
# October 1954, with exact date and time unspecified.
|
||||
Zone Asia/Hanoi 7:03:24 - LMT 1906 Jul 1
|
||||
7:06:30 - PLMT 1911 May 1
|
||||
7:00 - ICT 1942 Dec 31 23:00
|
||||
8:00 - IDT 1945 Mar 14 23:00
|
||||
9:00 - JST 1945 Sep 2
|
||||
7:00 - ICT 1947 Apr 1
|
||||
8:00 - IDT 1954 Oct
|
||||
7:00 - ICT
|
||||
|
||||
# China
|
||||
# Changbai Time ("Long-white Time", Long-white = Heilongjiang area)
|
||||
# Heilongjiang (except Mohe county), Jilin
|
||||
Zone Asia/Harbin 8:26:44 - LMT 1928 # or Haerbin
|
||||
8:30 - CHAT 1932 Mar # Changbai Time
|
||||
8:00 - CST 1940
|
||||
9:00 - CHAT 1966 May
|
||||
8:30 - CHAT 1980 May
|
||||
8:00 PRC C%sT
|
||||
|
||||
# far west China
|
||||
Zone Asia/Kashgar 5:03:56 - LMT 1928 # or Kashi or Kaxgar
|
||||
5:30 - KAST 1940 # Kashgar Time
|
||||
5:00 - KAST 1980 May
|
||||
8:00 PRC C%sT
|
||||
|
||||
# Kuwait
|
||||
Zone Asia/Kuwait 3:11:56 - LMT 1950
|
||||
3:00 - AST
|
||||
|
||||
|
||||
# Oman
|
||||
# Milne says 3:54:24 was the meridian of the Muscat Tidal Observatory.
|
||||
Zone Asia/Muscat 3:54:24 - LMT 1920
|
||||
4:00 - GST
|
||||
|
||||
# India
|
||||
# From Paul Eggert (2014-08-11), after a heads-up from Stephen Colebourne:
|
||||
# According to a Portuguese decree (1911-05-26)
|
||||
# http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
|
||||
# Portuguese India switched to UT +05 on 1912-01-01.
|
||||
#Zone Asia/Panaji [not enough info to complete]
|
||||
|
||||
# Cambodia
|
||||
# From Paul Eggert (2014-10-11):
|
||||
# See Asia/Ho_Chi_Minh for the source for most of this data. Also, guess
|
||||
# (1) Cambodia reverted to UT +07 on 1945-09-02, when Vietnam did, and
|
||||
# (2) they also reverted to +07 on 1953-11-09, the date of independence.
|
||||
# These guesses are probably wrong but they're better than guessing no
|
||||
# transitions there.
|
||||
Zone Asia/Phnom_Penh 6:59:40 - LMT 1906 Jul 1
|
||||
7:06:30 - PLMT 1911 May 1
|
||||
7:00 - ICT 1942 Dec 31 23:00
|
||||
8:00 - IDT 1945 Mar 14 23:00
|
||||
9:00 - JST 1945 Sep 2
|
||||
7:00 - ICT 1947 Apr 1
|
||||
8:00 - IDT 1953 Nov 9
|
||||
7:00 - ICT
|
||||
|
||||
# Israel
|
||||
Zone Asia/Tel_Aviv 2:19:04 - LMT 1880
|
||||
2:21 - JMT 1918
|
||||
2:00 Zion I%sT
|
||||
|
||||
# Laos
|
||||
# From Paul Eggert (2014-10-11):
|
||||
# See Asia/Ho_Chi_Minh for the source for most of this data.
|
||||
# Trần's book says that Laos reverted to UT +07 on 1955-04-15.
|
||||
# Also, guess that Laos reverted to +07 on 1945-09-02, when Vietnam did;
|
||||
# this is probably wrong but it's better than guessing no transition.
|
||||
Zone Asia/Vientiane 6:50:24 - LMT 1906 Jul 1
|
||||
7:06:30 - PLMT 1911 May 1
|
||||
7:00 - ICT 1942 Dec 31 23:00
|
||||
8:00 - IDT 1945 Mar 14 23:00
|
||||
9:00 - JST 1945 Sep 2
|
||||
7:00 - ICT 1947 Apr 1
|
||||
8:00 - IDT 1955 Apr 15
|
||||
7:00 - ICT
|
||||
|
||||
# Jan Mayen
|
||||
# From Whitman:
|
||||
Zone Atlantic/Jan_Mayen -1:00 - EGT
|
||||
|
||||
# St Helena
|
||||
Zone Atlantic/St_Helena -0:22:48 - LMT 1890 # Jamestown
|
||||
-0:22:48 - JMT 1951 # Jamestown Mean Time
|
||||
0:00 - GMT
|
||||
|
||||
# Northern Ireland
|
||||
Zone Europe/Belfast -0:23:40 - LMT 1880 Aug 2
|
||||
-0:25:21 - DMT 1916 May 21 2:00
|
||||
# DMT = Dublin/Dunsink MT
|
||||
-0:25:21 1:00 IST 1916 Oct 1 2:00s
|
||||
# IST = Irish Summer Time
|
||||
0:00 GB-Eire %s 1968 Oct 27
|
||||
1:00 - BST 1971 Oct 31 2:00u
|
||||
0:00 GB-Eire %s 1996
|
||||
0:00 EU GMT/BST
|
||||
|
||||
# Guernsey
|
||||
# Data from Joseph S. Myers
|
||||
# http://mm.icann.org/pipermail/tz/2013-September/019883.html
|
||||
# References to be added
|
||||
# LMT Location - 49.27N -2.33E - St.Peter Port
|
||||
Zone Europe/Guernsey -0:09:19 - LMT 1913 Jun 18
|
||||
0:00 GB-Eire %s 1940 Jul 2
|
||||
1:00 C-Eur CE%sT 1945 May 8
|
||||
0:00 GB-Eire %s 1968 Oct 27
|
||||
1:00 - BST 1971 Oct 31 2:00u
|
||||
0:00 GB-Eire %s 1996
|
||||
0:00 EU GMT/BST
|
||||
|
||||
# Isle of Man
|
||||
#
|
||||
# From Lester Caine (2013-09-04):
|
||||
# The Isle of Man legislation is now on-line at
|
||||
# <http://www.legislation.gov.im>, starting with the original Statutory
|
||||
# Time Act in 1883 and including additional confirmation of some of
|
||||
# the dates of the 'Summer Time' orders originating at
|
||||
# Westminster. There is a little uncertainty as to the starting date
|
||||
# of the first summer time in 1916 which may have be announced a
|
||||
# couple of days late. There is still a substantial number of
|
||||
# documents to work through, but it is thought that every GB change
|
||||
# was also implemented on the island.
|
||||
#
|
||||
# AT4 of 1883 - The Statutory Time et cetera Act 1883 -
|
||||
# LMT Location - 54.1508N -4.4814E - Tynwald Hill ( Manx parliament )
|
||||
Zone Europe/Isle_of_Man -0:17:55 - LMT 1883 Mar 30 0:00s
|
||||
0:00 GB-Eire %s 1968 Oct 27
|
||||
1:00 - BST 1971 Oct 31 2:00u
|
||||
0:00 GB-Eire %s 1996
|
||||
0:00 EU GMT/BST
|
||||
|
||||
# Jersey
|
||||
# Data from Joseph S. Myers
|
||||
# http://mm.icann.org/pipermail/tz/2013-September/019883.html
|
||||
# References to be added
|
||||
# LMT Location - 49.187N -2.107E - St. Helier
|
||||
Zone Europe/Jersey -0:08:25 - LMT 1898 Jun 11 16:00u
|
||||
0:00 GB-Eire %s 1940 Jul 2
|
||||
1:00 C-Eur CE%sT 1945 May 8
|
||||
0:00 GB-Eire %s 1968 Oct 27
|
||||
1:00 - BST 1971 Oct 31 2:00u
|
||||
0:00 GB-Eire %s 1996
|
||||
0:00 EU GMT/BST
|
||||
|
||||
# Slovenia
|
||||
Zone Europe/Ljubljana 0:58:04 - LMT 1884
|
||||
1:00 - CET 1941 Apr 18 23:00
|
||||
1:00 C-Eur CE%sT 1945 May 8 2:00s
|
||||
1:00 1:00 CEST 1945 Sep 16 2:00s
|
||||
1:00 - CET 1982 Nov 27
|
||||
1:00 EU CE%sT
|
||||
|
||||
# Bosnia and Herzegovina
|
||||
Zone Europe/Sarajevo 1:13:40 - LMT 1884
|
||||
1:00 - CET 1941 Apr 18 23:00
|
||||
1:00 C-Eur CE%sT 1945 May 8 2:00s
|
||||
1:00 1:00 CEST 1945 Sep 16 2:00s
|
||||
1:00 - CET 1982 Nov 27
|
||||
1:00 EU CE%sT
|
||||
|
||||
# Macedonia
|
||||
Zone Europe/Skopje 1:25:44 - LMT 1884
|
||||
1:00 - CET 1941 Apr 18 23:00
|
||||
1:00 C-Eur CE%sT 1945 May 8 2:00s
|
||||
1:00 1:00 CEST 1945 Sep 16 2:00s
|
||||
1:00 - CET 1982 Nov 27
|
||||
1:00 EU CE%sT
|
||||
|
||||
# Moldova / Transnistria
|
||||
Zone Europe/Tiraspol 1:58:32 - LMT 1880
|
||||
1:55 - CMT 1918 Feb 15 # Chisinau MT
|
||||
1:44:24 - BMT 1931 Jul 24 # Bucharest MT
|
||||
2:00 Romania EE%sT 1940 Aug 15
|
||||
2:00 1:00 EEST 1941 Jul 17
|
||||
1:00 C-Eur CE%sT 1944 Aug 24
|
||||
3:00 Russia MSK/MSD 1991 Mar 31 2:00
|
||||
2:00 Russia EE%sT 1992 Jan 19 2:00
|
||||
3:00 Russia MSK/MSD
|
||||
|
||||
# Liechtenstein
|
||||
Zone Europe/Vaduz 0:38:04 - LMT 1894 Jun
|
||||
1:00 - CET 1981
|
||||
1:00 EU CE%sT
|
||||
|
||||
# Croatia
|
||||
Zone Europe/Zagreb 1:03:52 - LMT 1884
|
||||
1:00 - CET 1941 Apr 18 23:00
|
||||
1:00 C-Eur CE%sT 1945 May 8 2:00s
|
||||
1:00 1:00 CEST 1945 Sep 16 2:00s
|
||||
1:00 - CET 1982 Nov 27
|
||||
1:00 EU CE%sT
|
||||
|
||||
# Madagascar
|
||||
Zone Indian/Antananarivo 3:10:04 - LMT 1911 Jul
|
||||
3:00 - EAT 1954 Feb 27 23:00s
|
||||
3:00 1:00 EAST 1954 May 29 23:00s
|
||||
3:00 - EAT
|
||||
|
||||
# Comoros
|
||||
Zone Indian/Comoro 2:53:04 - LMT 1911 Jul # Moroni, Gran Comoro
|
||||
3:00 - EAT
|
||||
|
||||
# Mayotte
|
||||
Zone Indian/Mayotte 3:00:56 - LMT 1911 Jul # Mamoutzou
|
||||
3:00 - EAT
|
||||
|
||||
# US minor outlying islands
|
||||
Zone Pacific/Johnston -10:00 - HST
|
||||
|
||||
# US minor outlying islands
|
||||
#
|
||||
# From Mark Brader (2005-01-23):
|
||||
# [Fallacies and Fantasies of Air Transport History, by R.E.G. Davies,
|
||||
# published 1994 by Paladwr Press, McLean, VA, USA; ISBN 0-9626483-5-3]
|
||||
# reproduced a Pan American Airways timetable from 1936, for their weekly
|
||||
# "Orient Express" flights between San Francisco and Manila, and connecting
|
||||
# flights to Chicago and the US East Coast. As it uses some time zone
|
||||
# designations that I've never seen before:....
|
||||
# Fri. 6:30A Lv. HONOLOLU (Pearl Harbor), H.I. H.L.T. Ar. 5:30P Sun.
|
||||
# " 3:00P Ar. MIDWAY ISLAND . . . . . . . . . M.L.T. Lv. 6:00A "
|
||||
#
|
||||
Zone Pacific/Midway -11:49:28 - LMT 1901
|
||||
-11:00 - NST 1956 Jun 3
|
||||
-11:00 1:00 NDT 1956 Sep 2
|
||||
-11:00 - NST 1967 Apr # N=Nome
|
||||
-11:00 - BST 1983 Nov 30 # B=Bering
|
||||
-11:00 - SST # S=Samoa
|
||||
|
||||
# N Mariana Is
|
||||
Zone Pacific/Saipan -14:17:00 - LMT 1844 Dec 31
|
||||
9:43:00 - LMT 1901
|
||||
9:00 - MPT 1969 Oct # N Mariana Is Time
|
||||
10:00 - MPT 2000 Dec 23
|
||||
10:00 - ChST # Chamorro Standard Time
|
||||
48
checklinks.awk
Normal file
48
checklinks.awk
Normal file
@ -0,0 +1,48 @@
|
||||
# Check links in tz tables.
|
||||
|
||||
# Contributed by Paul Eggert. This file is in the public domain.
|
||||
|
||||
BEGIN {
|
||||
# Special marker indicating that the name is defined as a Zone.
|
||||
# It is a newline so that it cannot match a valid name.
|
||||
# It is not null so that its slot does not appear unset.
|
||||
Zone = "\n"
|
||||
}
|
||||
|
||||
/^Zone/ {
|
||||
if (defined[$2]) {
|
||||
if (defined[$2] == Zone) {
|
||||
printf "%s: Zone has duplicate definition\n", $2
|
||||
} else {
|
||||
printf "%s: Link with same name as Zone\n", $2
|
||||
}
|
||||
status = 1
|
||||
}
|
||||
defined[$2] = Zone
|
||||
}
|
||||
|
||||
/^Link/ {
|
||||
if (defined[$3]) {
|
||||
if (defined[$3] == Zone) {
|
||||
printf "%s: Link with same name as Zone\n", $3
|
||||
} else if (defined[$3] == $2) {
|
||||
printf "%s: Link has duplicate definition\n", $3
|
||||
} else {
|
||||
printf "%s: Link to both %s and %s\n", $3, defined[$3], $2
|
||||
}
|
||||
status = 1
|
||||
}
|
||||
used[$2] = 1
|
||||
defined[$3] = $2
|
||||
}
|
||||
|
||||
END {
|
||||
for (tz in used) {
|
||||
if (defined[tz] != Zone) {
|
||||
printf "%s: Link to non-zone\n", tz
|
||||
status = 1
|
||||
}
|
||||
}
|
||||
|
||||
exit status
|
||||
}
|
||||
177
checktab.awk
Normal file
177
checktab.awk
Normal file
@ -0,0 +1,177 @@
|
||||
# Check tz tables for consistency.
|
||||
|
||||
# Contributed by Paul Eggert. This file is in the public domain.
|
||||
|
||||
BEGIN {
|
||||
FS = "\t"
|
||||
|
||||
if (!iso_table) iso_table = "iso3166.tab"
|
||||
if (!zone_table) zone_table = "zone1970.tab"
|
||||
if (!want_warnings) want_warnings = -1
|
||||
|
||||
while (getline <iso_table) {
|
||||
iso_NR++
|
||||
if ($0 ~ /^#/) continue
|
||||
if (NF != 2) {
|
||||
printf "%s:%d: wrong number of columns\n", \
|
||||
iso_table, iso_NR >>"/dev/stderr"
|
||||
status = 1
|
||||
}
|
||||
cc = $1
|
||||
name = $2
|
||||
if (cc !~ /^[A-Z][A-Z]$/) {
|
||||
printf "%s:%d: invalid country code '%s'\n", \
|
||||
iso_table, iso_NR, cc >>"/dev/stderr"
|
||||
status = 1
|
||||
}
|
||||
if (cc <= cc0) {
|
||||
if (cc == cc0) {
|
||||
s = "duplicate";
|
||||
} else {
|
||||
s = "out of order";
|
||||
}
|
||||
|
||||
printf "%s:%d: country code '%s' is %s\n", \
|
||||
iso_table, iso_NR, cc, s \
|
||||
>>"/dev/stderr"
|
||||
status = 1
|
||||
}
|
||||
cc0 = cc
|
||||
if (name2cc[name]) {
|
||||
printf "%s:%d: '%s' and '%s' have the same name\n", \
|
||||
iso_table, iso_NR, name2cc[name], cc \
|
||||
>>"/dev/stderr"
|
||||
status = 1
|
||||
}
|
||||
name2cc[name] = cc
|
||||
cc2name[cc] = name
|
||||
cc2NR[cc] = iso_NR
|
||||
}
|
||||
|
||||
cc0 = ""
|
||||
|
||||
while (getline <zone_table) {
|
||||
zone_NR++
|
||||
if ($0 ~ /^#/) continue
|
||||
if (NF != 3 && NF != 4) {
|
||||
printf "%s:%d: wrong number of columns\n", \
|
||||
zone_table, zone_NR >>"/dev/stderr"
|
||||
status = 1
|
||||
}
|
||||
split($1, cca, /,/)
|
||||
cc = cca[1]
|
||||
coordinates = $2
|
||||
tz = $3
|
||||
comments = $4
|
||||
if (cc < cc0) {
|
||||
printf "%s:%d: country code '%s' is out of order\n", \
|
||||
zone_table, zone_NR, cc >>"/dev/stderr"
|
||||
status = 1
|
||||
}
|
||||
cc0 = cc
|
||||
tztab[tz] = 1
|
||||
tz2comments[tz] = comments
|
||||
tz2NR[tz] = zone_NR
|
||||
for (i in cca) {
|
||||
cc = cca[i]
|
||||
cctz = cc tz
|
||||
cctztab[cctz] = 1
|
||||
if (cc2name[cc]) {
|
||||
cc_used[cc]++
|
||||
} else {
|
||||
printf "%s:%d: %s: unknown country code\n", \
|
||||
zone_table, zone_NR, cc >>"/dev/stderr"
|
||||
status = 1
|
||||
}
|
||||
}
|
||||
if (coordinates !~ /^[-+][0-9][0-9][0-5][0-9][-+][01][0-9][0-9][0-5][0-9]$/ \
|
||||
&& coordinates !~ /^[-+][0-9][0-9][0-5][0-9][0-5][0-9][-+][01][0-9][0-9][0-5][0-9][0-5][0-9]$/) {
|
||||
printf "%s:%d: %s: invalid coordinates\n", \
|
||||
zone_table, zone_NR, coordinates >>"/dev/stderr"
|
||||
status = 1
|
||||
}
|
||||
}
|
||||
|
||||
for (cctz in cctztab) {
|
||||
cc = substr (cctz, 1, 2)
|
||||
tz = substr (cctz, 3)
|
||||
if (1 < cc_used[cc]) {
|
||||
comments_needed[tz] = cc
|
||||
}
|
||||
}
|
||||
for (cctz in cctztab) {
|
||||
cc = substr (cctz, 1, 2)
|
||||
tz = substr (cctz, 3)
|
||||
if (!comments_needed[tz] && tz2comments[tz]) {
|
||||
printf "%s:%d: unnecessary comment '%s'\n", \
|
||||
zone_table, tz2NR[tz], tz2comments[tz] \
|
||||
>>"/dev/stderr"
|
||||
tz2comments[tz] = 0
|
||||
status = 1
|
||||
} else if (comments_needed[tz] && !tz2comments[tz]) {
|
||||
printf "%s:%d: missing comment for %s\n", \
|
||||
zone_table, tz2NR[tz], comments_needed[tz] \
|
||||
>>"/dev/stderr"
|
||||
tz2comments[tz] = 1
|
||||
status = 1
|
||||
}
|
||||
}
|
||||
FS = " "
|
||||
}
|
||||
|
||||
$1 ~ /^#/ { next }
|
||||
|
||||
{
|
||||
tz = rules = ""
|
||||
if ($1 == "Zone") {
|
||||
tz = $2
|
||||
ruleUsed[$4] = 1
|
||||
} else if ($1 == "Link" && zone_table == "zone.tab") {
|
||||
# Ignore Link commands if source and destination basenames
|
||||
# are identical, e.g. Europe/Istanbul versus Asia/Istanbul.
|
||||
src = $2
|
||||
dst = $3
|
||||
while ((i = index(src, "/"))) src = substr(src, i+1)
|
||||
while ((i = index(dst, "/"))) dst = substr(dst, i+1)
|
||||
if (src != dst) tz = $3
|
||||
} else if ($1 == "Rule") {
|
||||
ruleDefined[$2] = 1
|
||||
} else {
|
||||
ruleUsed[$2] = 1
|
||||
}
|
||||
if (tz && tz ~ /\//) {
|
||||
if (!tztab[tz]) {
|
||||
printf "%s: no data for '%s'\n", zone_table, tz \
|
||||
>>"/dev/stderr"
|
||||
status = 1
|
||||
}
|
||||
zoneSeen[tz] = 1
|
||||
}
|
||||
}
|
||||
|
||||
END {
|
||||
for (tz in ruleDefined) {
|
||||
if (!ruleUsed[tz]) {
|
||||
printf "%s: Rule never used\n", tz
|
||||
status = 1
|
||||
}
|
||||
}
|
||||
for (tz in tztab) {
|
||||
if (!zoneSeen[tz]) {
|
||||
printf "%s:%d: no Zone table for '%s'\n", \
|
||||
zone_table, tz2NR[tz], tz >>"/dev/stderr"
|
||||
status = 1
|
||||
}
|
||||
}
|
||||
if (0 < want_warnings) {
|
||||
for (cc in cc2name) {
|
||||
if (!cc_used[cc]) {
|
||||
printf "%s:%d: warning: " \
|
||||
"no Zone entries for %s (%s)\n", \
|
||||
iso_table, cc2NR[cc], cc, cc2name[cc]
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
exit status
|
||||
}
|
||||
143
europe
143
europe
@ -1500,73 +1500,84 @@ Zone Atlantic/Reykjavik -1:28 - LMT 1908
|
||||
# But these events all occurred before the 1970 cutoff,
|
||||
# so record only the time in Rome.
|
||||
#
|
||||
# From Paul Eggert (2006-03-22):
|
||||
# For Italian DST we have three sources: Shanks & Pottenger, Whitman, and
|
||||
# F. Pollastri
|
||||
# Day-light Saving Time in Italy (2006-02-03)
|
||||
# http://toi.iriti.cnr.it/uk/ienitlt.html
|
||||
# ('FP' below), taken from an Italian National Electrotechnical Institute
|
||||
# publication. When the three sources disagree, guess who's right, as follows:
|
||||
# From Michael Deckers (2016-10-24):
|
||||
# http://www.ac-ilsestante.it/MERIDIANE/ora_legale quotes a law of 1893-08-10
|
||||
# ... [translated as] "The preceding dispositions will enter into
|
||||
# force at the instant at which, according to the time specified in
|
||||
# the 1st article, the 1st of November 1893 will begin...."
|
||||
#
|
||||
# year FP Shanks&P. (S) Whitman (W) Go with:
|
||||
# 1916 06-03 06-03 24:00 06-03 00:00 FP & W
|
||||
# 09-30 09-30 24:00 09-30 01:00 FP; guess 24:00s
|
||||
# 1917 04-01 03-31 24:00 03-31 00:00 FP & S
|
||||
# 09-30 09-29 24:00 09-30 01:00 FP & W
|
||||
# 1918 03-09 03-09 24:00 03-09 00:00 FP & S
|
||||
# 10-06 10-05 24:00 10-06 01:00 FP & W
|
||||
# 1919 03-01 03-01 24:00 03-01 00:00 FP & S
|
||||
# 10-04 10-04 24:00 10-04 01:00 FP; guess 24:00s
|
||||
# 1920 03-20 03-20 24:00 03-20 00:00 FP & S
|
||||
# 09-18 09-18 24:00 10-01 01:00 FP; guess 24:00s
|
||||
# 1944 04-02 04-03 02:00 S (see C-Eur)
|
||||
# 09-16 10-02 03:00 FP; guess 24:00s
|
||||
# 1945 09-14 09-16 24:00 FP; guess 24:00s
|
||||
# 1970 05-21 05-31 00:00 S
|
||||
# 09-20 09-27 00:00 S
|
||||
# From Pierpaolo Bernardi (2016-10-20):
|
||||
# The authoritative source for time in Italy is the national metrological
|
||||
# institute, which has a summary page of historical DST data at
|
||||
# http://www.inrim.it/res/tf/ora_legale_i.shtml
|
||||
# (2016-10-24):
|
||||
# http://www.renzobaldini.it/le-ore-legali-in-italia/
|
||||
# has still different data for 1944. It divides Italy in two, as
|
||||
# there were effectively two governments at the time, north of Gothic
|
||||
# Line German controlled territory, official government RSI, and south
|
||||
# of the Gothic Line, controlled by allied armies.
|
||||
#
|
||||
# From Brian Inglis (2016-10-23):
|
||||
# Viceregal LEGISLATIVE DECREE. 14 September 1944, no. 219.
|
||||
# Restoration of Standard Time. (044U0219) (OJ 62 of 30.9.1944) ...
|
||||
# Given the R. law decreed on 1944-03-29, no. 92, by which standard time is
|
||||
# advanced to sixty minutes later starting at hour two on 1944-04-02; ...
|
||||
# Starting at hour three on the date 1944-09-17 standard time will be resumed.
|
||||
#
|
||||
# From Paul Eggert (2016-10-27):
|
||||
# Go with INRiM for DST rules, except as corrected by Inglis for 1944
|
||||
# for the Kingdom of Italy. This is consistent with Renzo Baldini.
|
||||
# Model Rome's occupation by using using C-Eur rules from 1943-09-10
|
||||
# to 1944-06-04; although Rome was an open city during this period, it
|
||||
# was effectively controlled by Germany.
|
||||
#
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
Rule Italy 1916 only - Jun 3 0:00s 1:00 S
|
||||
Rule Italy 1916 only - Oct 1 0:00s 0 -
|
||||
Rule Italy 1917 only - Apr 1 0:00s 1:00 S
|
||||
Rule Italy 1917 only - Sep 30 0:00s 0 -
|
||||
Rule Italy 1918 only - Mar 10 0:00s 1:00 S
|
||||
Rule Italy 1918 1919 - Oct Sun>=1 0:00s 0 -
|
||||
Rule Italy 1919 only - Mar 2 0:00s 1:00 S
|
||||
Rule Italy 1920 only - Mar 21 0:00s 1:00 S
|
||||
Rule Italy 1920 only - Sep 19 0:00s 0 -
|
||||
Rule Italy 1940 only - Jun 15 0:00s 1:00 S
|
||||
Rule Italy 1944 only - Sep 17 0:00s 0 -
|
||||
Rule Italy 1945 only - Apr 2 2:00 1:00 S
|
||||
Rule Italy 1945 only - Sep 15 0:00s 0 -
|
||||
Rule Italy 1946 only - Mar 17 2:00s 1:00 S
|
||||
Rule Italy 1946 only - Oct 6 2:00s 0 -
|
||||
Rule Italy 1947 only - Mar 16 0:00s 1:00 S
|
||||
Rule Italy 1947 only - Oct 5 0:00s 0 -
|
||||
Rule Italy 1948 only - Feb 29 2:00s 1:00 S
|
||||
Rule Italy 1948 only - Oct 3 2:00s 0 -
|
||||
Rule Italy 1966 1968 - May Sun>=22 0:00 1:00 S
|
||||
Rule Italy 1966 1969 - Sep Sun>=22 0:00 0 -
|
||||
Rule Italy 1969 only - Jun 1 0:00 1:00 S
|
||||
Rule Italy 1970 only - May 31 0:00 1:00 S
|
||||
Rule Italy 1970 only - Sep lastSun 0:00 0 -
|
||||
Rule Italy 1971 1972 - May Sun>=22 0:00 1:00 S
|
||||
Rule Italy 1971 only - Sep lastSun 1:00 0 -
|
||||
Rule Italy 1972 only - Oct 1 0:00 0 -
|
||||
Rule Italy 1973 only - Jun 3 0:00 1:00 S
|
||||
Rule Italy 1973 1974 - Sep lastSun 0:00 0 -
|
||||
Rule Italy 1974 only - May 26 0:00 1:00 S
|
||||
Rule Italy 1975 only - Jun 1 0:00s 1:00 S
|
||||
Rule Italy 1975 1977 - Sep lastSun 0:00s 0 -
|
||||
Rule Italy 1976 only - May 30 0:00s 1:00 S
|
||||
Rule Italy 1977 1979 - May Sun>=22 0:00s 1:00 S
|
||||
Rule Italy 1978 only - Oct 1 0:00s 0 -
|
||||
Rule Italy 1979 only - Sep 30 0:00s 0 -
|
||||
Rule Italy 1916 only - Jun 3 24:00 1:00 S
|
||||
Rule Italy 1916 1917 - Sep 30 24:00 0 -
|
||||
Rule Italy 1917 only - Mar 31 24:00 1:00 S
|
||||
Rule Italy 1918 only - Mar 9 24:00 1:00 S
|
||||
Rule Italy 1918 only - Oct 6 24:00 0 -
|
||||
Rule Italy 1919 only - Mar 1 24:00 1:00 S
|
||||
Rule Italy 1919 only - Oct 4 24:00 0 -
|
||||
Rule Italy 1920 only - Mar 20 24:00 1:00 S
|
||||
Rule Italy 1920 only - Sep 18 24:00 0 -
|
||||
Rule Italy 1940 only - Jun 14 24:00 1:00 S
|
||||
Rule Italy 1942 only - Nov 2 2:00s 0 -
|
||||
Rule Italy 1943 only - Mar 29 2:00s 1:00 S
|
||||
Rule Italy 1943 only - Oct 4 2:00s 0 -
|
||||
Rule Italy 1944 only - Apr 2 2:00s 1:00 S
|
||||
Rule Italy 1944 only - Sep 17 2:00s 0 -
|
||||
Rule Italy 1945 only - Apr 2 2:00 1:00 S
|
||||
Rule Italy 1945 only - Sep 15 1:00 0 -
|
||||
Rule Italy 1946 only - Mar 17 2:00s 1:00 S
|
||||
Rule Italy 1946 only - Oct 6 2:00s 0 -
|
||||
Rule Italy 1947 only - Mar 16 0:00s 1:00 S
|
||||
Rule Italy 1947 only - Oct 5 0:00s 0 -
|
||||
Rule Italy 1948 only - Feb 29 2:00s 1:00 S
|
||||
Rule Italy 1948 only - Oct 3 2:00s 0 -
|
||||
Rule Italy 1966 1968 - May Sun>=22 0:00s 1:00 S
|
||||
Rule Italy 1966 only - Sep 24 24:00 0 -
|
||||
Rule Italy 1967 1969 - Sep Sun>=22 0:00s 0 -
|
||||
Rule Italy 1969 only - Jun 1 0:00s 1:00 S
|
||||
Rule Italy 1970 only - May 31 0:00s 1:00 S
|
||||
Rule Italy 1970 only - Sep lastSun 0:00s 0 -
|
||||
Rule Italy 1971 1972 - May Sun>=22 0:00s 1:00 S
|
||||
Rule Italy 1971 only - Sep lastSun 0:00s 0 -
|
||||
Rule Italy 1972 only - Oct 1 0:00s 0 -
|
||||
Rule Italy 1973 only - Jun 3 0:00s 1:00 S
|
||||
Rule Italy 1973 1974 - Sep lastSun 0:00s 0 -
|
||||
Rule Italy 1974 only - May 26 0:00s 1:00 S
|
||||
Rule Italy 1975 only - Jun 1 0:00s 1:00 S
|
||||
Rule Italy 1975 1977 - Sep lastSun 0:00s 0 -
|
||||
Rule Italy 1976 only - May 30 0:00s 1:00 S
|
||||
Rule Italy 1977 1979 - May Sun>=22 0:00s 1:00 S
|
||||
Rule Italy 1978 only - Oct 1 0:00s 0 -
|
||||
Rule Italy 1979 only - Sep 30 0:00s 0 -
|
||||
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
|
||||
Zone Europe/Rome 0:49:56 - LMT 1866 Sep 22
|
||||
0:49:56 - RMT 1893 Nov 1 0:00s # Rome Mean
|
||||
1:00 Italy CE%sT 1942 Nov 2 2:00s
|
||||
1:00 C-Eur CE%sT 1944 Jul
|
||||
0:49:56 - RMT 1893 Oct 31 23:49:56 # Rome Mean
|
||||
1:00 Italy CE%sT 1943 Sep 10
|
||||
1:00 C-Eur CE%sT 1944 Jun 4
|
||||
1:00 Italy CE%sT 1980
|
||||
1:00 EU CE%sT
|
||||
|
||||
@ -1765,6 +1776,10 @@ Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun
|
||||
# See Europe/Belgrade.
|
||||
|
||||
# Malta
|
||||
#
|
||||
# From Paul Eggert (2016-10-21):
|
||||
# Assume 1900-1972 was like Rome, overriding Shanks.
|
||||
#
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
Rule Malta 1973 only - Mar 31 0:00s 1:00 S
|
||||
Rule Malta 1973 only - Sep 29 0:00s 0 -
|
||||
@ -1775,8 +1790,6 @@ Rule Malta 1975 1980 - Sep Sun>=15 2:00 0 -
|
||||
Rule Malta 1980 only - Mar 31 2:00 1:00 S
|
||||
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
|
||||
Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 0:00s # Valletta
|
||||
1:00 Italy CE%sT 1942 Nov 2 2:00s
|
||||
1:00 C-Eur CE%sT 1945 Apr 2 2:00s
|
||||
1:00 Italy CE%sT 1973 Mar 31
|
||||
1:00 Malta CE%sT 1981
|
||||
1:00 EU CE%sT
|
||||
@ -1908,7 +1921,7 @@ Zone Europe/Monaco 0:29:32 - LMT 1891 Mar 15
|
||||
# Amsterdam mean time.
|
||||
|
||||
# The data entries before 1945 are taken from
|
||||
# http://www.staff.science.uu.nl/~gent0113/idl/idl.htm
|
||||
# http://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm
|
||||
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
Rule Neth 1916 only - May 1 0:00 1:00 NST # Netherlands Summer Time
|
||||
|
||||
76
leapseconds.awk
Normal file
76
leapseconds.awk
Normal file
@ -0,0 +1,76 @@
|
||||
# Generate the 'leapseconds' file from 'leap-seconds.list'.
|
||||
|
||||
# This file is in the public domain.
|
||||
|
||||
BEGIN {
|
||||
print "# Allowance for leap seconds added to each time zone file."
|
||||
print ""
|
||||
print "# This file is in the public domain."
|
||||
print ""
|
||||
print "# This file is generated automatically from the data in the public-domain"
|
||||
print "# leap-seconds.list file available from most NIST time servers."
|
||||
print "# If the URL <ftp://time.nist.gov/pub/leap-seconds.list> does not work,"
|
||||
print "# you should be able to pick up leap-seconds.list from a secondary NIST server."
|
||||
print "# See <http://tf.nist.gov/tf-cgi/servers.cgi> for a list of secondary servers."
|
||||
print "# For more about leap-seconds.list, please see"
|
||||
print "# The NTP Timescale and Leap Seconds"
|
||||
print "# http://www.eecis.udel.edu/~mills/leap.html"
|
||||
print ""
|
||||
print "# The International Earth Rotation and Reference Systems Service"
|
||||
print "# periodically uses leap seconds to keep UTC to within 0.9 s of UT1"
|
||||
print "# (which measures the true angular orientation of the earth in space); see"
|
||||
print "# Terry J Quinn, The BIPM and the accurate measure of time,"
|
||||
print "# Proc IEEE 79, 7 (July 1991), 894-905 <http://dx.doi.org/10.1109/5.84965>."
|
||||
print "# There were no leap seconds before 1972, because the official mechanism"
|
||||
print "# accounting for the discrepancy between atomic time and the earth's rotation"
|
||||
print "# did not exist until the early 1970s."
|
||||
print ""
|
||||
print "# The correction (+ or -) is made at the given time, so lines"
|
||||
print "# will typically look like:"
|
||||
print "# Leap YEAR MON DAY 23:59:60 + R/S"
|
||||
print "# or"
|
||||
print "# Leap YEAR MON DAY 23:59:59 - R/S"
|
||||
print ""
|
||||
print "# If the leapsecond is Rolling (R) the given time is local time."
|
||||
print "# If the leapsecond is Stationary (S) the given time is UTC."
|
||||
print ""
|
||||
print "# Leap YEAR MONTH DAY HH:MM:SS CORR R/S"
|
||||
}
|
||||
|
||||
/^ *$/ { next }
|
||||
|
||||
/^#\tUpdated through/ || /^#\tFile expires on:/ {
|
||||
last_lines = last_lines $0 "\n"
|
||||
}
|
||||
|
||||
/^#/ { next }
|
||||
|
||||
{
|
||||
NTP_timestamp = $1
|
||||
TAI_minus_UTC = $2
|
||||
hash_mark = $3
|
||||
one = $4
|
||||
month = $5
|
||||
year = $6
|
||||
if (old_TAI_minus_UTC) {
|
||||
if (old_TAI_minus_UTC < TAI_minus_UTC) {
|
||||
sign = "23:59:60\t+"
|
||||
} else {
|
||||
sign = "23:59:59\t-"
|
||||
}
|
||||
if (month == "Jan") {
|
||||
year--;
|
||||
month = "Dec";
|
||||
day = 31
|
||||
} else if (month == "Jul") {
|
||||
month = "Jun";
|
||||
day = 30
|
||||
}
|
||||
printf "Leap\t%s\t%s\t%s\t%s\tS\n", year, month, day, sign
|
||||
}
|
||||
old_TAI_minus_UTC = TAI_minus_UTC
|
||||
}
|
||||
|
||||
END {
|
||||
printf "\n%s", last_lines
|
||||
}
|
||||
3
zone.tab
3
zone.tab
@ -152,7 +152,8 @@ CU +2308-08222 America/Havana
|
||||
CV +1455-02331 Atlantic/Cape_Verde
|
||||
CW +1211-06900 America/Curacao
|
||||
CX -1025+10543 Indian/Christmas
|
||||
CY +3510+03322 Asia/Nicosia
|
||||
CY +3510+03322 Asia/Nicosia Cyprus (most areas)
|
||||
CY +3507+03357 Asia/Famagusta Northern Cyprus
|
||||
CZ +5005+01426 Europe/Prague
|
||||
DE +5230+01322 Europe/Berlin Germany (most areas)
|
||||
DE +4742+00841 Europe/Busingen Busingen
|
||||
|
||||
@ -144,7 +144,8 @@ CU +2308-08222 America/Havana
|
||||
CV +1455-02331 Atlantic/Cape_Verde
|
||||
CW,AW,BQ,SX +1211-06900 America/Curacao
|
||||
CX -1025+10543 Indian/Christmas
|
||||
CY +3510+03322 Asia/Nicosia
|
||||
CY +3510+03322 Asia/Nicosia Cyprus (most areas)
|
||||
CY +3507+03357 Asia/Famagusta Northern Cyprus
|
||||
CZ,SK +5005+01426 Europe/Prague
|
||||
DE +5230+01322 Europe/Berlin Germany (most areas)
|
||||
DK +5540+01235 Europe/Copenhagen
|
||||
|
||||
52
zoneinfo2tdf.pl
Executable file
52
zoneinfo2tdf.pl
Executable file
@ -0,0 +1,52 @@
|
||||
#! /usr/bin/perl -w
|
||||
|
||||
# Courtesy Ken Pizzini.
|
||||
|
||||
use strict;
|
||||
|
||||
#This file released to the public domain.
|
||||
|
||||
# Note: error checking is poor; trust the output only if the input
|
||||
# has been checked by zic.
|
||||
|
||||
my $contZone = '';
|
||||
while (<>) {
|
||||
my $origline = $_;
|
||||
my @fields = ();
|
||||
while (s/^\s*((?:"[^"]*"|[^\s#])+)//) {
|
||||
push @fields, $1;
|
||||
}
|
||||
next unless @fields;
|
||||
|
||||
my $type = lc($fields[0]);
|
||||
if ($contZone) {
|
||||
@fields >= 3 or warn "bad continuation line";
|
||||
unshift @fields, '+', $contZone;
|
||||
$type = 'zone';
|
||||
}
|
||||
|
||||
$contZone = '';
|
||||
if ($type eq 'zone') {
|
||||
# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
|
||||
my $nfields = @fields;
|
||||
$nfields >= 5 or warn "bad zone line";
|
||||
if ($nfields > 6) {
|
||||
#this splice is optional, depending on one's preference
|
||||
#(one big date-time field, or componentized date and time):
|
||||
splice(@fields, 5, $nfields-5, "@fields[5..$nfields-1]");
|
||||
}
|
||||
$contZone = $fields[1] if @fields > 5;
|
||||
} elsif ($type eq 'rule') {
|
||||
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
|
||||
@fields == 10 or warn "bad rule line";
|
||||
} elsif ($type eq 'link') {
|
||||
# Link TARGET LINK-NAME
|
||||
@fields == 3 or warn "bad link line";
|
||||
} elsif ($type eq 'leap') {
|
||||
# Leap YEAR MONTH DAY HH:MM:SS CORR R/S
|
||||
@fields == 7 or warn "bad leap line";
|
||||
} else {
|
||||
warn "Fubar at input line $.: $origline";
|
||||
}
|
||||
print join("\t", @fields), "\n";
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user