March 2018 - tz - lists.iana.org

proposed time zone package changes (Samoa, Factory, et al.)
by Arthur David Olson Aug. 28, 2019

Aug. 28, 2019

Below find proposed time zone package changes; the executive summary: * Makefile Change LOCALTIME default from "Factory" to "GMT"; do not compile "factory" file (but keep it in the distribution). * Theory Remove reference to "Factory" zone. * australasia Change end of DST in Samoa in 2011 from 2011-04-03 0:00 to 2011-04-03 1:00 (thanks to Raymond Hughes for a reference). * localtime.c Initialize ttinfo structures filled by tzparse (thanks to Ravindra for reporting a valgrind warning). * zic.c Fix generation of POSIX strings for zones with rules using "weekday<=n" forms of dates (thanks to Lei Liu for finding the problem). Also, limit output for non-POSIX-specificable zones defined to follow the same rules every year. (Note that no zones of either of the above types appear in the distribution; these changes cater to add-on zones). If no problems are found, 2010n will appear on 2010-10-25. --ado diff -r -c old/Makefile new/Makefile *** old/Makefile Mon Sep 27 09:24:25 2010 --- new/Makefile Tue Oct 12 12:36:50 2010 *************** *** 1,5 **** # <pre> ! # @(#)Makefile 8.8 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)Makefile 8.9 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 12,18 **** # make zonenames # to get a list of the values you can use for LOCALTIME. ! LOCALTIME= Factory # If you want something other than Eastern United States time as a template # for handling POSIX-style time zone environment variables, --- 12,18 ---- # make zonenames # to get a list of the values you can use for LOCALTIME. ! LOCALTIME= GMT # If you want something other than Eastern United States time as a template # for handling POSIX-style time zone environment variables, *************** *** 262,269 **** DOCS= README Theory $(MANS) date.1 Makefile PRIMARY_YDATA= africa antarctica asia australasia \ europe northamerica southamerica ! YDATA= $(PRIMARY_YDATA) pacificnew etcetera factory backward ! NDATA= systemv SDATA= solar87 solar88 solar89 TDATA= $(YDATA) $(NDATA) $(SDATA) TABDATA= iso3166.tab zone.tab --- 262,269 ---- DOCS= README Theory $(MANS) date.1 Makefile PRIMARY_YDATA= africa antarctica asia australasia \ europe northamerica southamerica ! YDATA= $(PRIMARY_YDATA) pacificnew etcetera backward ! NDATA= systemv factory SDATA= solar87 solar88 solar89 TDATA= $(YDATA) $(NDATA) $(SDATA) TABDATA= iso3166.tab zone.tab diff -r -c old/Theory new/Theory *** old/Theory Mon Sep 27 09:24:25 2010 --- new/Theory Tue Oct 12 12:36:50 2010 *************** *** 1,4 **** ! @(#)Theory 8.4 This file is in the public domain, so clarified as of 2009-05-17 by Arthur David Olson. --- 1,4 ---- ! @(#)Theory 8.5 This file is in the public domain, so clarified as of 2009-05-17 by Arthur David Olson. *************** *** 287,294 **** 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', `EET' (see the file `europe'), ! and `Factory' (see the file `factory'). ----- Time zone abbreviations ----- --- 287,293 ---- 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'). ----- Time zone abbreviations ----- diff -r -c old/australasia new/australasia *** old/australasia Mon Sep 27 09:24:27 2010 --- new/australasia Tue Oct 12 13:14:56 2010 *************** *** 1,5 **** # <pre> ! # @(#)australasia 8.18 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)australasia 8.19 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 487,497 **** # http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%2020… # </a> Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 -11:26:56 - LMT 1911 -11:30 - SAMT 1950 # Samoa Time -11:00 - WST 2010 Sep 26 ! -11:00 1:00 WSDT 2011 Apr 3 -11:00 - WST # Solomon Is --- 487,507 ---- # http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%2020… # </a> + # From Raymond Hughes (2010-10-07): + # Please see + # <a href="http://www.mcil.gov.ws"> + # http://www.mcil.gov.ws + # </a>, + # the Ministry of Commerce, Industry and Labour (sideframe) "Last Sunday + # September 2010 (26/09/10) - adjust clocks forward from 12:00 midnight + # to 01:00am and First Sunday April 2011 (03/04/11) - adjust clocks + # backwards from 1:00am to 12:00am" + Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 -11:26:56 - LMT 1911 -11:30 - SAMT 1950 # Samoa Time -11:00 - WST 2010 Sep 26 ! -11:00 1:00 WSDT 2011 Apr 3 1:00 -11:00 - WST # Solomon Is diff -r -c old/localtime.c new/localtime.c *** old/localtime.c Mon Sep 27 09:24:26 2010 --- new/localtime.c Tue Oct 12 12:36:51 2010 *************** *** 5,11 **** #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.14"; #endif /* !defined NOID */ #endif /* !defined lint */ --- 5,11 ---- #ifndef lint #ifndef NOID ! static char elsieid[] = "@(#)localtime.c 8.15"; #endif /* !defined NOID */ #endif /* !defined lint */ *************** *** 914,919 **** --- 914,920 ---- register unsigned char * typep; register char * cp; register int load_result; + static struct ttinfo zttinfo; INITIALIZE(dstname); stdname = name; *************** *** 986,991 **** --- 987,993 ---- /* ** Two transitions per year, from EPOCH_YEAR forward. */ + sp->ttis[0] = sp->ttis[1] = zttinfo; sp->ttis[0].tt_gmtoff = -dstoffset; sp->ttis[0].tt_isdst = 1; sp->ttis[0].tt_abbrind = stdlen + 1; *************** *** 1099,1106 **** } /* ** Finally, fill in ttis. - ** ttisstd and ttisgmt need not be handled. */ sp->ttis[0].tt_gmtoff = -stdoffset; sp->ttis[0].tt_isdst = FALSE; sp->ttis[0].tt_abbrind = 0; --- 1101,1108 ---- } /* ** Finally, fill in ttis. */ + sp->ttis[0] = sp->ttis[1] = zttinfo; sp->ttis[0].tt_gmtoff = -stdoffset; sp->ttis[0].tt_isdst = FALSE; sp->ttis[0].tt_abbrind = 0; *************** *** 1113,1118 **** --- 1115,1121 ---- dstlen = 0; sp->typecnt = 1; /* only standard time */ sp->timecnt = 0; + sp->ttis[0] = zttinfo; sp->ttis[0].tt_gmtoff = -stdoffset; sp->ttis[0].tt_isdst = 0; sp->ttis[0].tt_abbrind = 0; diff -r -c old/zic.c new/zic.c *** old/zic.c Mon Sep 27 09:24:26 2010 --- new/zic.c Tue Oct 12 13:37:29 2010 *************** *** 3,9 **** ** 2006-07-17 by Arthur David Olson. */ ! static char elsieid[] = "@(#)zic.c 8.22"; #include "private.h" #include "locale.h" --- 3,9 ---- ** 2006-07-17 by Arthur David Olson. */ ! static char elsieid[] = "@(#)zic.c 8.24"; #include "private.h" #include "locale.h" *************** *** 1881,1896 **** register int week; if (rp->r_dycode == DC_DOWGEQ) { ! week = 1 + rp->r_dayofmonth / DAYSPERWEEK; ! if ((week - 1) * DAYSPERWEEK + 1 != rp->r_dayofmonth) return -1; } else if (rp->r_dycode == DC_DOWLEQ) { if (rp->r_dayofmonth == len_months[1][rp->r_month]) week = 5; else { ! week = 1 + rp->r_dayofmonth / DAYSPERWEEK; ! if (week * DAYSPERWEEK - 1 != rp->r_dayofmonth) return -1; } } else return -1; /* "cannot happen" */ (void) sprintf(result, "M%d.%d.%d", --- 1881,1896 ---- register int week; if (rp->r_dycode == DC_DOWGEQ) { ! if ((rp->r_dayofmonth % DAYSPERWEEK) != 1) return -1; + week = 1 + rp->r_dayofmonth / DAYSPERWEEK; } else if (rp->r_dycode == DC_DOWLEQ) { if (rp->r_dayofmonth == len_months[1][rp->r_month]) week = 5; else { ! if ((rp->r_dayofmonth % DAYSPERWEEK) != 0) return -1; + week = rp->r_dayofmonth / DAYSPERWEEK; } } else return -1; /* "cannot happen" */ (void) sprintf(result, "M%d.%d.%d", *************** *** 2018,2023 **** --- 2018,2024 ---- register char * envvar; register int max_abbr_len; register int max_envvar_len; + register int prodstic; /* all rules are min to max */ max_abbr_len = 2 + max_format_len + max_abbrvar_len; max_envvar_len = 2 * max_abbr_len + 5 * 9; *************** *** 2032,2037 **** --- 2033,2039 ---- timecnt = 0; typecnt = 0; charcnt = 0; + prodstic = zonecount == 1; /* ** Thanks to Earl Chew ** for noting the need to unconditionally initialize startttisstd. *************** *** 2053,2058 **** --- 2055,2062 ---- updateminmax(rp->r_loyear); if (rp->r_hiwasnum) updateminmax(rp->r_hiyear); + if (rp->r_lowasnum || rp->r_hiwasnum) + prodstic = FALSE; } } /* *************** *** 2075,2080 **** --- 2079,2094 ---- if (max_year <= INT_MAX - YEARSPERREPEAT) max_year += YEARSPERREPEAT; else max_year = INT_MAX; + /* + ** Regardless of any of the above, + ** for a "proDSTic" zone which specifies that its rules + ** always have and always will be in effect, + ** we only need one cycle to define the zone. + */ + if (prodstic) { + min_year = 1900; + max_year = min_year + YEARSPERREPEAT; + } } /* ** For the benefit of older systems,

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Brazilian state of Goiás may abolish DST
by World Time Zone April 27, 2019

April 27, 2019

According to some news Brazilian state of Goiás may abolish DST: "The Energy and Mines Commission of the House of Representatives approved a Legislative Decree that suspends daylight saving time in Goiás." http://www.infomoney.com.br/minhas-financas/consumo/noticia/7061178/comissa… Also, ".... this year the federal government even considered not implementing daylight saving time, but left the decision to 2018." Alexander Krivenyshev https://www.WorldTimeZone.com

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[PATCH] Support building zic.exe and zdump.exe natively on Windows with Visual Studio nmake.
by Manuela Friedrich Oct. 28, 2018

Oct. 28, 2018

Provide getopt() implementation for Windows as per ftp://ftp.es.ele.tue.nl/pub/users/jos/poster/getopt.c In localtime.c use native localtime(), gmtime(), ctime() and mktime(). Also use int or __int64 respectively for ssize_t type and check for Windows drive letters in tzloadbody(). In private.h and zdump.c define strotimax depending on Visual Studio version. It needs to be strtol for up to VS 2010 and stroll for higher versions. In zdump.c need prototype for gmtime_r() to suffice return type requirements. Also use __time64_t variables on Windows instead of time_t. In main() variable declarations had to be moved to the top to avoid compile errors. In zic.c dolink() need to have an extra mkdirs() call for Windows as we don't have link support here and the previous mkdirs() calls wouldn't have been called therefore. Also itsdir() needs separate Windows part to check for directory flag as the namesslashdot Linux alternative alway returns directory on Windows. Add nmake specific Makefile.nmake based on existing Makefile. It uses different object, library and executable extensions, sets CC and CFLAGS for 64 and 32bit Windows build. Target root has been added to build zdump and zic. Version and version.h rules were changed to batch. --- Makefile.nmake | 934 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ getopt.c | 110 +++++++ localtime.c | 23 ++ private.h | 4 + zdump.c | 47 ++- zic.c | 14 + 6 files changed, 1128 insertions(+), 4 deletions(-) create mode 100644 Makefile.nmake create mode 100644 getopt.c diff --git a/Makefile.nmake b/Makefile.nmake new file mode 100644 index 0000000..730523e --- /dev/null +++ b/Makefile.nmake @@ -0,0 +1,934 @@ +# This file is in the public domain, so clarified as of +# 2009-05-17 by Arthur David Olson. + +# This file supports building zic.exe and zdump.exe with Visual Studio nmake + +# Package name for the code distribution. +PACKAGE= tzcode + +# Version number for the distribution, overridden in the 'tarballs' rule below. +VERSION= unknown + +# Email address for bug reports. +BUGEMAIL= tz(a)iana.org + +# Change the line below for your time zone (after finding the zone you want in +# the time zone files, or adding it to a time zone file). +# Alternately, if you discover you've got the wrong time zone, you can just +# zic -l rightzone +# to correct things. +# Use the command +# make zonenames +# to get a list of the values you can use for LOCALTIME. + +LOCALTIME= GMT + +# If you want something other than Eastern United States time as a template +# for handling POSIX-style time zone environment variables, +# change the line below (after finding the zone you want in the +# time zone files, or adding it to a time zone file). +# (When a POSIX-style environment variable is handled, the rules in the +# template file are used to determine "spring forward" and "fall back" days and +# times; the environment variable itself specifies UT offsets of standard and +# summer time.) +# Alternately, if you discover you've got the wrong time zone, you can just +# zic -p rightzone +# to correct things. +# Use the command +# make zonenames +# to get a list of the values you can use for POSIXRULES. +# If you want POSIX compatibility, use "America/New_York". + +POSIXRULES= America/New_York + +# Also see TZDEFRULESTRING below, which takes effect only +# if the time zone files cannot be accessed. + + +# Installation locations. +# +# The defaults are suitable for Debian, except that if REDO is +# posix_right or right_posix then files that Debian puts under +# /usr/share/zoneinfo/posix and /usr/share/zoneinfo/right are instead +# put under /usr/share/zoneinfo-posix and /usr/share/zoneinfo-leaps, +# respectively. Problems with the Debian approach are discussed in +# the commentary for the right_posix rule (below). + +# Destination directory, which can be used for staging. +# 'make DESTDIR=/stage install' installs under /stage (e.g., to +# /stage/etc/localtime instead of to /etc/localtime). Files under +# /stage are not intended to work as-is, but can be copied by hand to +# the root directory later. If DESTDIR is empty, 'make install' does +# not stage, but installs directly into production locations. +DESTDIR = + +# Everything is installed into subdirectories of TOPDIR, and used there. +# TOPDIR should be empty (meaning the root directory), +# or a directory name that does not end in "/". +# TOPDIR should be empty or an absolute name unless you're just testing. +TOPDIR = + +# The default local time zone is taken from the file TZDEFAULT. +TZDEFAULT = $(TOPDIR)/etc/localtime + +# The subdirectory containing installed program and data files, and +# likewise for installed files that can be shared among architectures. +# These should be relative file names. +USRDIR = usr +USRSHAREDIR = $(USRDIR)/share + +# "Compiled" time zone information is placed in the "TZDIR" directory +# (and subdirectories). +# TZDIR_BASENAME should not contain "/" and should not be ".", ".." or empty. +TZDIR_BASENAME= zoneinfo +TZDIR = $(TOPDIR)\\$(USRSHAREDIR)\\$(TZDIR_BASENAME) + +# The "tzselect" and (if you do "make INSTALL") "date" commands go in: +BINDIR = $(TOPDIR)/$(USRDIR)/bin + +# The "zdump" command goes in: +ZDUMPDIR = $(BINDIR) + +# The "zic" command goes in: +ZICDIR = $(TOPDIR)/$(USRDIR)/sbin + +# Manual pages go in subdirectories of. . . +MANDIR = $(TOPDIR)/$(USRSHAREDIR)/man + +# Library functions are put in an archive in LIBDIR. +LIBDIR = $(TOPDIR)/$(USRDIR)/lib + + +# Types to try, as an alternative to time_t. int64_t should be first. +TIME_T_ALTERNATIVES = int64_t int32_t uint32_t uint64_t + +# If you want only POSIX time, with time values interpreted as +# seconds since the epoch (not counting leap seconds), use +# REDO= posix_only +# below. If you want only "right" time, with values interpreted +# as seconds since the epoch (counting leap seconds), use +# REDO= right_only +# below. If you want both sets of data available, with leap seconds not +# counted normally, use +# REDO= posix_right +# below. If you want both sets of data available, with leap seconds counted +# normally, use +# REDO= right_posix +# below. POSIX mandates that leap seconds not be counted; for compatibility +# with it, use "posix_only" or "posix_right". Use POSIX time on systems with +# leap smearing; this can work better than unsmeared "right" time with +# applications that are not leap second aware, and is closer to unsmeared +# "right" time than unsmeared POSIX time is (e.g., 0.5 vs 1.0 s max error). + +REDO= posix_right + +# To install data in text form that has all the information of the binary data, +# (optionally incorporating leap second information), use +# TZDATA_TEXT= tzdata.zi leapseconds +# To install text data without leap second information (e.g., because +# REDO='posix_only'), use +# TZDATA_TEXT= tzdata.zi +# To avoid installing text data, use +# TZDATA_TEXT= + +TZDATA_TEXT= leapseconds tzdata.zi + +# For backward-compatibility links for old zone names, use +# BACKWARD= backward +# If you also want the link US/Pacific-New, even though it is confusing +# and is planned to be removed from the database eventually, use +# BACKWARD= backward pacificnew +# To omit these links, use +# BACKWARD= + +BACKWARD= backward + +# If you want out-of-scope and often-wrong data from the file 'backzone', use +# PACKRATDATA= backzone +# To omit this data, use +# PACKRATDATA= + +PACKRATDATA= + +# The name of a locale using the UTF-8 encoding, used during self-tests. +# The tests are skipped if the name does not appear to work on this system. + +UTF8_LOCALE= en_US.utf8 + +# Since "." may not be in PATH... + +YEARISTYPE= ./yearistype + +# Non-default libraries needed to link. +LDLIBS= + +# Add the following to the end of the "CFLAGS=" line as needed to override +# defaults specified in the source code. "-DFOO" is equivalent to "-DFOO=1". +# -DBIG_BANG=-9999999LL if the Big Bang occurred at time -9999999 (see zic.c) +# -DDEPRECATE_TWO_DIGIT_YEARS for optional runtime warnings about strftime +# formats that generate only the last two digits of year numbers +# -DEPOCH_LOCAL if the 'time' function returns local time not UT +# -DEPOCH_OFFSET=N if the 'time' function returns a value N greater +# than what POSIX specifies, assuming local time is UT. +# For example, N is 252460800 on AmigaOS. +# -DHAVE_DECL_ASCTIME_R=0 if <time.h> does not declare asctime_r +# -DHAVE_DECL_ENVIRON if <unistd.h> declares 'environ' +# -DHAVE_DIRECT_H if mkdir needs <direct.h> (MS-Windows) +# -DHAVE_GENERIC=0 if _Generic does not work +# -DHAVE_GETTEXT if 'gettext' works (e.g., GNU/Linux, FreeBSD, Solaris) +# -DHAVE_INCOMPATIBLE_CTIME_R if your system's time.h declares +# ctime_r and asctime_r incompatibly with the POSIX standard +# (Solaris when _POSIX_PTHREAD_SEMANTICS is not defined). +# -DHAVE_INTTYPES_H if you have a non-C99 compiler with <inttypes.h> +# -DHAVE_LINK=0 if your system lacks a link function +# -DHAVE_LOCALTIME_R=0 if your system lacks a localtime_r function +# -DHAVE_LOCALTIME_RZ=0 if you do not want zdump to use localtime_rz +# localtime_rz can make zdump significantly faster, but is nonstandard. +# -DHAVE_POSIX_DECLS=0 if your system's include files do not declare +# functions like 'link' or variables like 'tzname' required by POSIX +# -DHAVE_SNPRINTF=0 if your system lacks the snprintf function +# -DHAVE_STDBOOL_H if you have a non-C99 compiler with <stdbool.h> +# -DHAVE_STDINT_H if you have a non-C99 compiler with <stdint.h> +# -DHAVE_STRFTIME_L if <time.h> declares locale_t and strftime_l +# -DHAVE_STRDUP=0 if your system lacks the strdup function +# -DHAVE_SYMLINK=0 if your system lacks the symlink function +# -DHAVE_SYS_STAT_H=0 if your compiler lacks a <sys/stat.h> +# -DHAVE_SYS_WAIT_H=0 if your compiler lacks a <sys/wait.h> +# -DHAVE_TZSET=0 if your system lacks a tzset function +# -DHAVE_UNISTD_H=0 if your compiler lacks a <unistd.h> +# -Dlocale_t=XXX if your system uses XXX instead of locale_t +# -Dssize_t=long on hosts like MS-Windows that lack ssize_t +# -DTHREAD_SAFE to make localtime.c thread-safe, as POSIX requires; +# not needed by the main-program tz code, which is single-threaded. +# Append other compiler flags as needed, e.g., -pthread on GNU/Linux. +# -Dtime_tz=\"T\" to use T as the time_t type, rather than the system time_t +# This is intended for internal use only; it mangles external names. +# -DTZ_DOMAIN=\"foo\" to use "foo" for gettext domain name; default is "tz" +# -DTZ_DOMAINDIR=\"/path\" to use "/path" for gettext directory; +# the default is system-supplied, typically "/usr/lib/locale" +# -DTZDEFRULESTRING=\",date/time,date/time\" to default to the specified +# DST transitions if the time zone files cannot be accessed +# -DUNINIT_TRAP if reading uninitialized storage can cause problems +# other than simply getting garbage data +# -DUSE_LTZ=0 to build zdump with the system time zone library +# Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below. +# -DZIC_MAX_ABBR_LEN_WO_WARN=3 +# (or some other number) to set the maximum time zone abbreviation length +# that zic will accept without a warning (the default is 6) +# $(GCC_DEBUG_FLAGS) if you are using recent GCC and want lots of checking +# Select instrumentation via "make GCC_INSTRUMENT='whatever'". +GCC_INSTRUMENT = \ + -fsanitize=undefined -fsanitize-address-use-after-scope \ + -fsanitize-undefined-trap-on-error -fstack-protector +GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \ + $(GCC_INSTRUMENT) \ + -Wall -Wextra \ + -Walloc-size-larger-than=100000 -Warray-bounds=2 \ + -Wbad-function-cast -Wcast-align -Wdate-time \ + -Wdeclaration-after-statement -Wdouble-promotion \ + -Wformat=2 -Wformat-overflow=2 -Wformat-signedness -Wformat-truncation \ + -Winit-self -Wjump-misses-init -Wlogical-op \ + -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \ + -Wold-style-definition -Woverlength-strings -Wpointer-arith \ + -Wshadow -Wshift-overflow=2 -Wstrict-prototypes -Wstringop-overflow=5 \ + -Wsuggest-attribute=const -Wsuggest-attribute=format \ + -Wsuggest-attribute=noreturn -Wsuggest-attribute=pure \ + -Wtrampolines -Wundef -Wuninitialized -Wunused \ + -Wvariadic-macros -Wvla -Wwrite-strings \ + -Wno-address -Wno-format-nonliteral -Wno-sign-compare \ + -Wno-type-limits -Wno-unused-parameter +# +# If your system has a "GMT offset" field in its "struct tm"s +# (or if you decide to add such a field in your system's "time.h" file), +# add the name to a define such as +# -DTM_GMTOFF=tm_gmtoff +# to the end of the "CFLAGS=" line. If not defined, the code attempts to +# guess TM_GMTOFF from other macros; define NO_TM_GMTOFF to suppress this. +# Similarly, if your system has a "zone abbreviation" field, define +# -DTM_ZONE=tm_zone +# and define NO_TM_ZONE to suppress any guessing. These two fields are not +# required by POSIX, but are widely available on GNU/Linux and BSD systems. +# +# The next batch of options control support for external variables +# exported by tzcode. In practice these variables are less useful +# than TM_GMTOFF and TM_ZONE. However, most of them are standardized. +# # +# # To omit or support the external variable "tzname", add one of: +# # -DHAVE_TZNAME=0 +# # -DHAVE_TZNAME=1 +# # to the "CFLAGS=" line. "tzname" is required by POSIX 1988 and later. +# # If not defined, the code attempts to guess HAVE_TZNAME from other macros. +# # Warning: unless time_tz is also defined, HAVE_TZNAME=1 can cause +# # crashes when combined with some platforms' standard libraries, +# # presumably due to memory allocation issues. +# # +# # To omit or support the external variables "timezone" and "daylight", add +# # -DUSG_COMPAT=0 +# # -DUSG_COMPAT=1 +# # to the "CFLAGS=" line; "timezone" and "daylight" are inspired by +# # Unix Systems Group code and are required by POSIX 2008 (with XSI) and later. +# # If not defined, the code attempts to guess USG_COMPAT from other macros. +# # +# # To support the external variable "altzone", add +# # -DALTZONE +# # to the end of the "CFLAGS=" line; although "altzone" appeared in +# # System V Release 3.1 it has not been standardized. +# +# If you want functions that were inspired by early versions of X3J11's work, +# add +# -DSTD_INSPIRED +# to the end of the "CFLAGS=" line. This arranges for the functions +# "tzsetwall", "offtime", "timelocal", "timegm", "timeoff", +# "posix2time", and "time2posix" to be added to the time conversion library. +# "tzsetwall" is like "tzset" except that it arranges for local wall clock +# time (rather than the time specified in the TZ environment variable) +# to be used. +# "offtime" is like "gmtime" except that it accepts a second (long) argument +# that gives an offset to add to the time_t when converting it. +# "timelocal" is equivalent to "mktime". +# "timegm" is like "timelocal" except that it turns a struct tm into +# a time_t using UT (rather than local time as "timelocal" does). +# "timeoff" is like "timegm" except that it accepts a second (long) argument +# that gives an offset to use when converting to a time_t. +# "posix2time" and "time2posix" are described in an included manual page. +# X3J11's work does not describe any of these functions. +# Sun has provided "tzsetwall", "timelocal", and "timegm" in SunOS 4.0. +# These functions may well disappear in future releases of the time +# conversion package. +# +# If you don't want functions that were inspired by NetBSD, add +# -DNETBSD_INSPIRED=0 +# to the end of the "CFLAGS=" line. Otherwise, the functions +# "localtime_rz", "mktime_z", "tzalloc", and "tzfree" are added to the +# time library, and if STD_INSPIRED is also defined the functions +# "posix2time_z" and "time2posix_z" are added as well. +# The functions ending in "_z" (or "_rz") are like their unsuffixed +# (or suffixed-by-"_r") counterparts, except with an extra first +# argument of opaque type timezone_t that specifies the time zone. +# "tzalloc" allocates a timezone_t value, and "tzfree" frees it. +# +# If you want to allocate state structures in localtime, add +# -DALL_STATE +# to the end of the "CFLAGS=" line. Storage is obtained by calling malloc. +# +# NIST-PCTS:151-2, Version 1.4, (1993-12-03) is a test suite put +# out by the National Institute of Standards and Technology +# which claims to test C and Posix conformance. If you want to pass PCTS, add +# -DPCTS +# to the end of the "CFLAGS=" line. +# +# If you want strict compliance with XPG4 as of 1994-04-09, add +# -DXPG4_1994_04_09 +# to the end of the "CFLAGS=" line. This causes "strftime" to always return +# 53 as a week number (rather than 52 or 53) for January days before +# January's first Monday when a "%V" format is used and January 1 +# falls on a Friday, Saturday, or Sunday. + +!IF "$(CPU)" == "AMD64" +CFLAGS=/Zi -DHAVE_SYS_WAIT_H=0 -DHAVE_UNISTD_H=0 -DHAVE_INTTYPES_H=0 -DHAVE_POSIX_DECLS=0 -DHAVE_LINK=0 -DHAVE_SYMLINK=0 -DTYPECHECK=1 -DHAVE_DECL_ASCTIME_R=0 +!ELSE +CFLAGS=/Zi -DHAVE_SYS_WAIT_H=0 -DHAVE_UNISTD_H=0 -DHAVE_INTTYPES_H=0 -DHAVE_POSIX_DECLS=0 -DHAVE_LINK=0 -DHAVE_SYMLINK=0 -DSTD_INSPIRED -DTYPECHECK=1 -DHAVE_DECL_ASCTIME_R=0 +!ENDIF + +# Linker flags. Default to $(LFLAGS) for backwards compatibility +# to release 2012h and earlier. + +LDFLAGS= $(LFLAGS) + +# For leap seconds, this Makefile uses LEAPSECONDS='-L leapseconds' in +# submake command lines. The default is no leap seconds. + +LEAPSECONDS= + +# The zic command and its arguments. + +zic= ./zic.exe +ZIC= $(zic) $(ZFLAGS) + +ZFLAGS= + +# How to use zic to install tz binary files. + +ZIC_INSTALL= $(ZIC) -d '$(DESTDIR)$(TZDIR)' $(LEAPSECONDS) + +# The name of a Posix-compliant 'awk' on your system. +AWK= awk + +# The full path name of a Posix-compliant shell, preferably one that supports +# the Korn shell's 'select' statement as an extension. +# These days, Bash is the most popular. +# It should be OK to set this to /bin/sh, on platforms where /bin/sh +# lacks 'select' or doesn't completely conform to Posix, but /bin/bash +# is typically nicer if it works. +KSHELL= /bin/bash + +# The path where SGML DTDs are kept and the catalog file(s) to use when +# validating. The default should work on both Debian and Red Hat. +SGML_TOPDIR= /usr +SGML_DTDDIR= $(SGML_TOPDIR)/share/xml/w3c-sgml-lib/schema/dtd +SGML_SEARCH_PATH= $(SGML_DTDDIR)/REC-html401-19991224 +SGML_CATALOG_FILES= \ + $(SGML_TOPDIR)/share/doc/w3-recs/html/www.w3.org/TR/1999/REC-html401-19991224/HTML4.cat:$(SGML_TOPDIR)/share/sgml/html/4.01/HTML4.cat + +# The name, arguments and environment of a program to validate your web pages. +# See <http://openjade.sourceforge.net/doc/> for a validator, and +# <https://validator.w3.org/source/> for a validation library. +# Set VALIDATE=':' if you do not have such a program. +VALIDATE = nsgmls +VALIDATE_FLAGS = -s -B -wall -wno-unused-param +VALIDATE_ENV = \ + SGML_CATALOG_FILES='$(SGML_CATALOG_FILES)' \ + SGML_SEARCH_PATH='$(SGML_SEARCH_PATH)' \ + SP_CHARSET_FIXED=YES \ + SP_ENCODING=UTF-8 + +# This expensive test requires USE_LTZ. +# To suppress it, define this macro to be empty. +CHECK_TIME_T_ALTERNATIVES = check_time_t_alternatives + +# SAFE_CHAR is a regular expression that matches a safe character. +# Some parts of this distribution are limited to safe characters; +# 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 '#', +# since Makefile macros cannot contain '#'. +# TAB_CHAR is a single tab character, in single quotes. +TAB_CHAR= ' ' +SAFE_CHARSET1= $(TAB_CHAR)' !\"'$$sharp'$$%&'\''()*+,./0123456789:;<=>?@' +SAFE_CHARSET2= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\^_`' +SAFE_CHARSET3= 'abcdefghijklmnopqrstuvwxyz{|}~' +SAFE_CHARSET= $(SAFE_CHARSET1)$(SAFE_CHARSET2)$(SAFE_CHARSET3) +SAFE_CHAR= '[]'$(SAFE_CHARSET)'-]' + +# OK_CHAR matches any character allowed in the distributed files. +# 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= cl +CC= $(cc) -DTZDIR=\"$(TZDIR)\" + +AR= lib + +# ':' on typical hosts; 'ranlib' on the ancient hosts that still need ranlib. +RANLIB= : + +TZCOBJS= zic.obj getopt.obj +TZDOBJS= zdump.obj localtime.obj asctime.obj getopt.obj strftime.obj +DATEOBJS= date.obj localtime.obj strftime.obj asctime.obj +LIBSRCS= localtime.c asctime.c difftime.c +LIBOBJS= localtime.obj asctime.obj difftime.obj +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= calendars CONTRIBUTING LICENSE Makefile \ + NEWS README theory.html version +WEB_PAGES= tz-art.html tz-how-to.html tz-link.html +DOCS= $(MANS) date.1 $(MANTXTS) $(WEB_PAGES) +PRIMARY_YDATA= africa antarctica asia australasia \ + europe northamerica southamerica +YDATA= $(PRIMARY_YDATA) etcetera +NDATA= systemv factory +TDATA_TO_CHECK= $(YDATA) $(NDATA) backward pacificnew +TDATA= $(YDATA) $(NDATA) $(BACKWARD) +ZONETABLES= zone1970.tab zone.tab +TABDATA= iso3166.tab $(TZDATA_TEXT) $(ZONETABLES) +LEAP_DEPS= leapseconds.awk leap-seconds.list +TZDATA_ZI_DEPS= zishrink.awk version $(TDATA) $(PACKRATDATA) +DATA= $(TDATA_TO_CHECK) backzone iso3166.tab leap-seconds.list \ + leapseconds yearistype.sh $(ZONETABLES) +AWK_SCRIPTS= checklinks.awk checktab.awk leapseconds.awk zishrink.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) tzdata.zi + +# 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= \ + calendars CONTRIBUTING LICENSE Makefile NEWS README \ + 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 theory.html \ + time2posix.3 tz-art.html tz-how-to.html tz-link.html \ + 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 + +root: zic.exe zdump.exe + +ALL: root date $(ENCHILADA) + +install: root $(DATA) $(REDO) $(MANS) + mkdir $(DESTDIR)$(ETCDIR) $(DESTDIR)$(TZDIR) \ + $(DESTDIR)$(LIBDIR) \ + $(DESTDIR)$(MANDIR)/man3 $(DESTDIR)$(MANDIR)/man5 \ + $(DESTDIR)$(MANDIR)/man8 + $(ZIC_INSTALL) -l $(LOCALTIME) -p $(POSIXRULES) \ + -t '$(DESTDIR)$(TZDEFAULT)' + cp -f $(TABDATA) $(DESTDIR)$(TZDIR)/. + cp tzselect $(DESTDIR)$(BINDIR)/. + cp zdump.exe $(DESTDIR)$(ZDUMPDIR)/. + cp zic.exe $(DESTDIR)$(ZICDIR)/. + cp libtz.lib $(DESTDIR)$(LIBDIR)/. + $(RANLIB) $(DESTDIR)$(LIBDIR)/libtz.lib + 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/. + +# for version get first token of git describe (e.g. 2018a from 2018a-5-g4a132ae) or $(VERSION) +# if version file is already present, i.e. downloaded from ftp, skip recreating it +version: $(VERSION_DEPS) +!IF [git describe > nul 2>&1] == 0 + if not exist version for /f "delims=-" %%a in ('git describe') do echo %%a > $@ +!ELSE + if not exist version echo $(VERSION) > $@ +!ENDIF + +# This file can be tailored by setting BACKWARD, PACKRATDATA, etc. +tzdata.zi: $(TZDATA_ZI_DEPS) + version=`sed 1q version` && \ + LC_ALL=C $(AWK) -v version="$$version" -f zishrink.awk \ + $(TDATA) $(PACKRATDATA) >$@.out + mv $@.out $@ + +version.h: version + echo static char const PKGVERSION[]="($(PACKAGE)) "; >$@ + for /F %%H in ('type version') do echo static char const TZVERSION[]="%%H"; >> $@ + echo static char const REPORT_BUGS_TO[]="$(BUGEMAIL)"; >>$@ + +zdump.exe: $(TZDOBJS) + $(CC) $(CFLAGS) $(LDFLAGS) $(TZDOBJS) $(LDLIBS) /link /out:$@ + +zic.exe: $(TZCOBJS) + $(CC) $(CFLAGS) $(LDFLAGS) $(TZCOBJS) $(LDLIBS) /link /out:$@ + +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 = \ + BACKWARD='$(BACKWARD)' \ + DESTDIR='$(DESTDIR)' \ + LEAPSECONDS='$(LEAPSECONDS)' \ + PACKRATDATA='$(PACKRATDATA)' \ + TZDEFAULT='$(TZDEFAULT)' \ + TZDIR='$(TZDIR)' \ + YEARISTYPE='$(YEARISTYPE)' \ + ZIC='$(ZIC)' + +# 'make install_data' installs one set of tz binary files. +install_data: zic.exe leapseconds yearistype tzdata.zi + $(ZIC_INSTALL) tzdata.zi + +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): tzdata.zi zdump zic + mkdir -p tzs.dir + $(zic) -d tzs.dir tzdata.zi + $(AWK) '/^L/{print "Link\t" $$2 "\t" $$3}' \ + tzdata.zi | LC_ALL=C sort >$@.out + wd=`pwd` && \ + zones=`$(AWK) -v wd="$$wd" \ + '/^Z/{print wd "/tzs.dir/" $$2}' tzdata.zi \ + | LC_ALL=C sort` && \ + ./zdump -i -c $(TZS_YEAR) $$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.lib: $(LIBOBJS) + del $@ + $(AR) $@ $(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='"$$VERSION"'|' \ + <$@.ksh >$@.out + chmod +x $@.out + mv $@.out $@ + +check: check_character_set check_white_space check_links \ + check_name_lengths check_sorted \ + check_tables check_web check_zishrink check_tzs + +check_character_set: $(ENCHILADA) + test ! '$(UTF8_LOCALE)' || \ + ! printf 'A\304\200B\n' | \ + LC_ALL='$(UTF8_LOCALE)' grep -q '^A.B$$' >/dev/null 2>&1 || { \ + LC_ALL='$(UTF8_LOCALE)' && export LC_ALL && \ + sharp='#' && \ + ! grep -Env $(SAFE_LINE) $(MANS) date.1 $(MANTXTS) \ + $(MISC) $(SOURCES) $(WEB_PAGES) \ + CONTRIBUTING LICENSE Makefile README \ + version tzdata.zi && \ + ! grep -Env $(SAFE_SHARP_LINE) $(TDATA_TO_CHECK) 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:]]$$' \ + $$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list) + +PRECEDES_FILE_NAME = ^(Zone|Link[[:space:]]+[^[:space:]]+)[[:space:]]+ +FILE_NAME_COMPONENT_TOO_LONG = \ + $(PRECEDES_FILE_NAME)[^[:space:]]*[^/[:space:]]{15} + +check_name_lengths: $(TDATA_TO_CHECK) backzone + ! grep -En '$(FILE_NAME_COMPONENT_TOO_LONG)' \ + $(TDATA_TO_CHECK) backzone + +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_TO_CHECK) + $(AWK) -f checklinks.awk $(TDATA_TO_CHECK) + $(AWK) -f checklinks.awk tzdata.zi + +check_tables: checktab.awk $(PRIMARY_YDATA) $(ZONETABLES) + for tab in $(ZONETABLES); do \ + $(AWK) -f checktab.awk -v zone_table=$$tab $(PRIMARY_YDATA) \ + || exit; \ + done + +check_tzs: $(TZS) $(TZS_NEW) + diff -u $(TZS) $(TZS_NEW) + +# This checks only the HTML 4.01 strict page. +# To check the the other pages, use <https://validator.w3.org/>. +check_web: tz-how-to.html + $(VALIDATE_ENV) $(VALIDATE) $(VALIDATE_FLAGS) tz-how-to.html + +# Check that tzdata.zi generates the same binary data that its sources do. +check_zishrink: tzdata.zi zic leapseconds $(PACKRATDATA) $(TDATA) + for type in posix right; do \ + mkdir -p time_t.dir/$$type time_t.dir/$$type-shrunk && \ + case $$type in \ + right) leap='-L leapseconds';; \ + *) leap=;; \ + esac && \ + $(ZIC) $$leap -d time_t.dir/$$type $(TDATA) && \ + $(AWK) '/^Rule/' $(TDATA) | \ + $(ZIC) $$leap -d time_t.dir/$$type - $(PACKRATDATA) && \ + $(ZIC) $$leap -d time_t.dir/$$type-shrunk tzdata.zi && \ + diff -r time_t.dir/$$type time_t.dir/$$type-shrunk || exit; \ + done + rm -fr time_t.dir + +clean_misc: + del core *.obj *.out \ + date tzselect version.h zdump.exe zic.exe yearistype libtz.lib +clean: clean_misc + del *.dir tzdata.zi $(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 $(TZDATA_ZI_DEPS) | sed 1q` tzdata.zi + 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_TO_CHECK) tzdata.zi; do \ + $(zic) -v -d public.dir $$i 2>&1 || exit; \ + done + $(zic) -v -d public.dir $(TDATA_TO_CHECK) + rm -fr public.dir + +# Check that the code works under various alternative +# implementations of time_t. +check_time_t_alternatives: + if diff -q Makefile Makefile 2>/dev/null; then \ + quiet_option='-q'; \ + else \ + quiet_option=''; \ + fi && \ + wd=`pwd` && \ + zones=`$(AWK) '/^[^#]/ { print $$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 $$quiet_option -r \ + time_t.dir/int64_t/etc \ + time_t.dir/$$type/etc && \ + diff $$quiet_option -r \ + time_t.dir/int64_t/usr/share \ + time_t.dir/$$type/usr/share && \ + 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/usr/bin/zdump -V -t $$range $$zones \ + >time_t.dir/int64_t.out && \ + time_t.dir/$$type/usr/bin/zdump -V -t $$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=$$i\"" ; \ + ./zdump -v Europe/Rome ; \ + $(MAKE) clean ; \ + done + +zonenames: tzdata.zi + @$(AWK) '/^Z/ { print $$2 } /^L/ { print $$3 }' tzdata.zi + +asctime.obj: private.h tzfile.h +date.obj: private.h +difftime.obj: private.h +localtime.obj: private.h tzfile.h +strftime.obj: private.h tzfile.h +zdump.obj: version.h +zic.obj: private.h tzfile.h version.h +getopt.obj: +msvcrt.lib: + +.KEEP_STATE: + +.PHONY: ALL INSTALL root +.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: check_zishrink +.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 diff --git a/getopt.c b/getopt.c new file mode 100644 index 0000000..9608eae --- /dev/null +++ b/getopt.c @@ -0,0 +1,110 @@ +/* transcript/src/getopt.c + * + * public domain getopt from mod.sources + * RCSID: $Header: getopt.c,v 2.1 85/11/24 11:49:10 shore Rel $ + */ + +/* +** This is a public domain version of getopt(3). +** Bugs, fixes to: +** Keith Bostic +** ARPA: keith@seismo +** UUCP: seismo!keith +** Added NO_STDIO, opterr handling, Rich $alz (mirror!rs). +*/ + +#include <stdio.h> +#include <string.h> + +/* +** Error macro. Maybe we want stdio, maybe we don't. +** The (undocumented?) variable opterr tells us whether or not +** to print errors. +*/ + +#ifdef NO_STDIO + +#define tell(s) \ + if (opterr) \ + { \ + char ebuf[2]; \ + (void)write(2, nargv, (unsigned int)strlen(nargv)); \ + (void)write(2, s, (unsigned int)strlen(s)); \ + ebuf[0] = optopt; \ + ebuf[1] = '\n'; \ + (void)write(2, ebuf, 2); \ + } + +#else + +#define tell(s) \ + if (opterr) \ + (void)fputs(*nargv, stderr), \ + (void)fputs(s,stderr), \ + (void)fputc(optopt, stderr), \ + (void)fputc('\n', stderr) + +#endif + + +/* Global variables. */ +static char EMSG[] = ""; +int opterr = 1; /* undocumented error-suppressor*/ +int optind = 1; /* index into argv vector */ +int optopt; /* char checked for validity */ +char *optarg; /* arg associated with option */ + + + +getopt(nargc, nargv, ostr) + int nargc; + char **nargv; + char *ostr; +{ + static char *place = EMSG; /* option letter processing */ + register char *oli; /* option letter list index */ + + if (!*place) /* update scanning pointer */ + { + if (optind >= nargc || *(place = nargv[optind]) != '-' || !*++place) + return(EOF); + if (*place == '-') /* found "--" */ + { + optind++; + return(EOF); + } + } + /* option letter okay? */ + if ((optopt = *place++) == ':' || (oli = strchr(ostr, optopt)) == NULL) + { + if (!*place) + optind++; + tell(": illegal option -- "); + goto Bad; + } + if (*++oli != ':') /* don't need argument */ + { + optarg = NULL; + if (!*place) + optind++; + } + else /* need an argument */ + { + if (*place) + optarg = place; /* no white space */ + else + if (nargc <= ++optind) + { + place = EMSG; + tell(": option requires an argument -- "); + goto Bad; + } + else + optarg = nargv[optind]; /* white space */ + place = EMSG; + optind++; + } + return(optopt); /* dump back option letter */ +Bad: + return('?'); +} \ No newline at end of file diff --git a/localtime.c b/localtime.c index 9b8266a..06243dd 100644 --- a/localtime.c +++ b/localtime.c @@ -58,6 +58,14 @@ static void unlock(void) { } #define OPEN_MODE O_RDONLY #endif /* !defined O_BINARY */ +#ifdef _WIN32 +#ifdef _WIN64 +typedef unsigned __int64 ssize_t; +#else +typedef unsigned int ssize_t; +#endif +#endif + #ifndef WILDABBR /* ** Someone might make incorrect use of a time zone abbreviation: @@ -401,6 +409,13 @@ tzloadbody(char const *name, struct state *sp, bool doextend, if (name[0] == ':') ++name; doaccess = name[0] == '/'; +#ifdef _WIN32 + /* + ** DOS drive specifier? + */ + if (isalpha(name[0]) && name[1]==':' && name[2] == '\\') + doaccess = true; +#endif if (!doaccess) { size_t namelen = strlen(name); if (sizeof lsp->fullname - sizeof tzdirslash <= namelen) @@ -1529,11 +1544,13 @@ localtime_tzset(time_t const *timep, struct tm *tmp, bool setname) return tmp; } +#ifndef _WIN32 struct tm * localtime(const time_t *timep) { return localtime_tzset(timep, &tm, true); } +#endif struct tm * localtime_r(const time_t *timep, struct tm *tmp) @@ -1575,11 +1592,13 @@ gmtime_r(const time_t *timep, struct tm *tmp) return gmtsub(gmtptr, timep, 0, tmp); } +#ifndef _WIN32 struct tm * gmtime(const time_t *timep) { return gmtime_r(timep, &tm); } +#endif #ifdef STD_INSPIRED @@ -1724,6 +1743,7 @@ timesub(const time_t *timep, int_fast32_t offset, return NULL; } +#ifndef _WIN32 char * ctime(const time_t *timep) { @@ -1736,6 +1756,7 @@ ctime(const time_t *timep) struct tm *tmp = localtime(timep); return tmp ? asctime(tmp) : NULL; } +#endif char * ctime_r(const time_t *timep, char *buf) @@ -2155,6 +2176,7 @@ mktime_z(struct state *sp, struct tm *tmp) #endif +#ifndef _WIN32 time_t mktime(struct tm *tmp) { @@ -2169,6 +2191,7 @@ mktime(struct tm *tmp) unlock(); return t; } +#endif #ifdef STD_INSPIRED diff --git a/private.h b/private.h index 2e8415e..d460ca3 100644 --- a/private.h +++ b/private.h @@ -266,7 +266,11 @@ typedef int int_fast32_t; #ifndef INTMAX_MAX # ifdef LLONG_MAX typedef long long intmax_t; +# if _MSC_VER <= 1600 +# define strtoimax strtol +# else # define strtoimax strtoll +# endif # define INTMAX_MAX LLONG_MAX # define INTMAX_MIN LLONG_MIN # else diff --git a/zdump.c b/zdump.c index 60a027e..fc90662 100644 --- a/zdump.c +++ b/zdump.c @@ -4,6 +4,9 @@ */ #include "version.h" +#ifdef _WIN32 +#include <stdlib.h> +#endif /* ** This code has been made independent of the rest of the time @@ -22,6 +25,12 @@ #include "private.h" #include <stdio.h> +#if _MSC_VER <= 1600 +# define strtoimax strtol +#else +# define strtoimax strtoll +#endif + #ifndef HAVE_SNPRINTF # define HAVE_SNPRINTF (199901 <= __STDC_VERSION__) #endif @@ -181,6 +190,9 @@ gmtime_r(time_t *tp, struct tm *tmp) return r; } +#endif +#ifdef _WIN32 +struct tm * gmtime_r(time_t *tp, struct tm *tmp); #endif /* Platforms with TM_ZONE don't need tzname, so they can use the @@ -198,7 +210,11 @@ gmtime_r(time_t *tp, struct tm *tmp) # undef localtime_r # define localtime_r zdump_localtime_r static struct tm * +#ifdef _WIN32 +localtime_r(__time64_t *tp, struct tm *tmp) +#else localtime_r(time_t *tp, struct tm *tmp) +#endif { struct tm *r = localtime(tp); if (r) { @@ -212,7 +228,11 @@ localtime_r(time_t *tp, struct tm *tmp) # undef localtime_rz # define localtime_rz zdump_localtime_rz static struct tm * +#ifdef _WIN32 +localtime_rz(timezone_t rz, __time64_t *tp, struct tm *tmp) +#else localtime_rz(timezone_t rz, time_t *tp, struct tm *tmp) +#endif { return localtime_r(tp, tmp); } @@ -421,10 +441,22 @@ main(int argc, char *argv[]) register bool Vflag; register char * cutarg; register char * cuttimes; +#ifdef _WIN32 + register __time64_t cutlotime; + register __time64_t cuthitime; + __time64_t now; + __time64_t t; + __time64_t newt; +#else register time_t cutlotime; register time_t cuthitime; time_t now; + time_t t; + time_t newt; +#endif + struct tm * newtmp; bool iflag = false; + bool newtm_ok; cutlotime = absolute_min_time; cuthitime = absolute_max_time; @@ -531,7 +563,6 @@ main(int argc, char *argv[]) for (i = optind; i < argc; ++i) { timezone_t tz = tzalloc(argv[i]); char const *ab; - time_t t; struct tm tm, newtm; bool tm_ok; if (!tz) { @@ -562,12 +593,12 @@ main(int argc, char *argv[]) } } while (t < cuthitime) { - time_t newt = ((t < absolute_max_time - SECSPERDAY / 2 + newt = ((t < absolute_max_time - SECSPERDAY / 2 && t + SECSPERDAY / 2 < cuthitime) ? t + SECSPERDAY / 2 : cuthitime); - struct tm *newtmp = localtime_rz(tz, &newt, &newtm); - bool newtm_ok = newtmp != NULL; + newtmp = localtime_rz(tz, &newt, &newtm); + newtm_ok = newtmp != NULL; if (tm_ok != newtm_ok || (tm_ok && (delta(&newtm, &tm) != newt - t || newtm.tm_isdst != tm.tm_isdst @@ -605,11 +636,19 @@ main(int argc, char *argv[]) return EXIT_SUCCESS; } +#ifdef _WIN32 +static __time64_t +#else static time_t +#endif yeartot(intmax_t y) { register intmax_t myy, seconds, years; +#ifdef _WIN32 + register __time64_t t; +#else register time_t t; +#endif myy = EPOCH_YEAR; t = 0; diff --git a/zic.c b/zic.c index 304410f..11120ee 100644 --- a/zic.c +++ b/zic.c @@ -897,6 +897,11 @@ dolink(char const *fromfield, char const *tofield, bool staysymlink) mkdirs(tofield, true); symlink_errno = symlink(contents, tofield) == 0 ? 0 : errno; } +#ifdef _WIN32 + /* there is no link support on Windows */ + if (symlink_errno == ENOTSUP && !todirs_made) + mkdirs(tofield, true); +#endif free(linkalloc); if (symlink_errno == 0) { if (link_errno != ENOTSUP) @@ -986,6 +991,14 @@ itsdir(char const *name) if (res == 0) return S_ISDIR(st.st_mode) != 0; #endif +#ifdef _WIN32 + if (res == 0 ) { + if ((st.st_mode & 0170000) == 0040000) + return 1; + else + return 0; + } +#else if (res == 0 || errno == EOVERFLOW) { size_t n = strlen(name); char *nameslashdot = emalloc(n + 3); @@ -996,6 +1009,7 @@ itsdir(char const *name) free(nameslashdot); return dir; } +#endif return false; } -- 2.15.1.windows.2

4 16

Re: [tz] [IANA #985615] Sudan Time Zone change
by ahmed.atyya＠ntc.gov.sd June 25, 2018

June 25, 2018

Dear Sir/ Madam we would like to inform you that the Republic of Sudan is going to change the time zone from (GMT + 3:00) to (GMT+ 2:00) starting from Wednesday 1 November 2017. this is for your information and action if required. Best Regards Dear Mr. Paul We would like to inform you as TZ coordinator that the Republic of Sudan is planning to change its time zone from GMT+ 3:00 to GMT +2:00 ( The original time zone ) starting from 1 November 2017 Please if you can update time zone data base Or you you can tell us what action is needed from Sudan government Best Regards Ahmed Atyya Head of Numbering Section National Telecomm. Corporation – Sudan Phone: +249123499988 Email: ahmed.atyya@ ----- Original Message ----- From: Sabrina Tanamal via RT <iana-questions(a)iana.org> To: ahmed atyya <ahmed.atyya(a)ntc.gov.sd> Sent: Tue, 17 Oct 2017 01:33:06 +0300 (EAT) Subject: [IANA #985615] Sudan Time Zone change Dear Ahmed, Thank you for contacting us. We host the Time Zone Database, but updates are made by the Time Zone Coordinator in consultation with the Time Zone mailing list, in accordance with RFC 6557. Questions about the contents of the database should be sent to the mailing list. For mailing list archives and subscription information, please see http://www.iana.org/time-zones Best regards, Sabrina Tanamal IANA Services Specialist On Mon Oct 16 09:55:06 2017, ahmed.atyya(a)ntc.gov.sd wrote: > Dear Sir/ Madam > > > > > > we would like to inform you that the Republic of Sudan is going to > change the time zone from (GMT + 3:00) to (GMT+ 2:00) starting from > Wednesday 1 November 2017. > > > this is for your information and action if required. > > > > > > Best Regards > > > > > > Ahmed Atyya > > > Head of Numbering Section > > National Telecomm. Corporation – Sudan > > Phone: +249123499988 > > Email: ahmed.atyya(a)ntc.gov.sd

6 19

wrong Europe/Dublin dst offset rule
by Vicky May 30, 2018

May 30, 2018

Hi, while parsing the data i found the issue in rule Europe/Dublin Negative DST.. Previous version or not in any other file there is no negative dst. DST either start and end . # The following is like GB-Eire and EU, except with standard time in # summer and negative daylight saving time in winter. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Eire 1971 only - Oct 31 2:00u -1:00 GMT Rule Eire 1972 1980 - Mar Sun>=16 2:00u 0 IST Rule Eire 1972 1980 - Oct Sun>=23 2:00u -1:00 GMT Rule Eire 1981 max - Mar lastSun 1:00u 0 IST Rule Eire 1981 1989 - Oct Sun>=23 1:00u -1:00 GMT Rule Eire 1990 1995 - Oct Sun>=22 1:00u -1:00 GMT Rule Eire 1996 max - Oct lastSun 1:00u -1:00 GMT Please explain why -ve dst offset compared with other files. Regards, Vaibhav

5 6

[PROPOSED] Support zi parsers that mishandle negative DST offsets
by Paul Eggert April 23, 2018

April 23, 2018

This is intended to provide a way to support both clients that require data to have only positive DST offsets, and clients that do not have this restriction. * Makefile (XDST, SDST): New macros. (TZDATA_ZI_DEPS): Add zidst.awk. (DSTDATA_ZI_DEPS): New macro. (all): Depend on fulldata.zi and pdstdata.zi. (fulldata.zi pdstdata.zi): New rule. (tzdata.zi): Use $(XDST)data.zi instead of reading original source. (check_zishrink): Check zidst.awk, too. (clean): Remove all *.zi files, not just tzdata.zi. * NEWS, europe: Mention this. * zidst.awk: New file. --- Makefile | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++----------- NEWS | 30 ++++++++++++++++++++++++++++++ europe | 39 ++++++++++++++++++++++----------------- zidst.awk | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 154 insertions(+), 28 deletions(-) create mode 100644 zidst.awk diff --git a/Makefile b/Makefile index 8c84cd9..92ddb80 100644 --- a/Makefile +++ b/Makefile @@ -10,6 +10,26 @@ VERSION= unknown # Email address for bug reports. BUGEMAIL= tz(a)iana.org +# To install the full data, which can contain daylight saving time +# offsets that are negative (relative to standard time), use +# XDST= full +# To install data containing only positive daylight saving time +# offsets, but otherwise as close to the full data as practical, use +# XDST= pdst +XDST= pdst +# Parsers requiring DST offsets to be positive should use the file +# pdstdata.zi, which contains almost all the data of 'africa' etc., +# except with positive DST offsets. This works around a problem that +# was discovered in January 2018 with negative DST in tests for ICU +# and OpenJDK. See: +# https://mm.icann.org/pipermail/tz/2018-January/025825.html +# https://mm.icann.org/pipermail/tz/2018-January/025822.html +# Currently the 'africa' etc. files use pdst form if comments are +# ignored, to ease transition for parsers that do not support +# negative DST offsets. This is intended to change to full form at +# some point, so that full-featured zi parsers that use the 'africa' +# files will get the full data without changing anything. + # Change the line below for your time zone (after finding the zone you want in # the time zone files, or adding it to a time zone file). # Alternately, if you discover you've got the wrong time zone, you can just @@ -463,7 +483,8 @@ TDATA= $(YDATA) $(NDATA) $(BACKWARD) ZONETABLES= zone1970.tab zone.tab TABDATA= iso3166.tab $(TZDATA_TEXT) $(ZONETABLES) LEAP_DEPS= leapseconds.awk leap-seconds.list -TZDATA_ZI_DEPS= zishrink.awk version $(TDATA) $(PACKRATDATA) +TZDATA_ZI_DEPS= zidst.awk zishrink.awk version $(TDATA) $(PACKRATDATA) +DSTDATA_ZI_DEPS= zidst.awk $(TDATA) $(PACKRATDATA) DATA= $(TDATA_TO_CHECK) backzone iso3166.tab leap-seconds.list \ leapseconds yearistype.sh $(ZONETABLES) AWK_SCRIPTS= checklinks.awk checktab.awk leapseconds.awk zishrink.awk @@ -500,7 +521,8 @@ VERSION_DEPS= \ SHELL= /bin/sh -all: tzselect yearistype zic zdump libtz.a $(TABDATA) +all: tzselect yearistype zic zdump libtz.a $(TABDATA) \ + fulldata.zi pdstdata.zi ALL: all date $(ENCHILADA) @@ -535,11 +557,15 @@ version: $(VERSION_DEPS) printf '%s\n' "$$V" >$@.out mv $@.out $@ -# This file can be tailored by setting BACKWARD, PACKRATDATA, etc. -tzdata.zi: $(TZDATA_ZI_DEPS) +# These files can be tailored by setting BACKWARD, PACKRATDATA, etc. +fulldata.zi pdstdata.zi: $(DSTDATA_ZI_DEPS) + $(AWK) -v outfile='$@' -f zidst.awk $(TDATA) $(PACKRATDATA) \ + >$@.out + mv $@.out $@ +tzdata.zi: $(XDST)data.zi version version=`sed 1q version` && \ LC_ALL=C $(AWK) -v version="$$version" -f zishrink.awk \ - $(TDATA) $(PACKRATDATA) >$@.out + $(XDST)data.zi >$@.out mv $@.out $@ version.h: version @@ -721,17 +747,32 @@ check_tzs: $(TZS) $(TZS_NEW) check_web: tz-how-to.html $(VALIDATE_ENV) $(VALIDATE) $(VALIDATE_FLAGS) tz-how-to.html -# Check that tzdata.zi generates the same binary data that its sources do. -check_zishrink: tzdata.zi zic leapseconds $(PACKRATDATA) $(TDATA) +# The format of the source files, either full or pdst. +# Currently they are in pdst format, but this is expected to change. +SDST = pdst + +# Check that zishrink.awk does not alter the data, and that zidst.awk +# preserves $(SDST) data. +check_zishrink: zic leapseconds $(PACKRATDATA) $(TDATA) \ + $(XDST)data.zi tzdata.zi for type in posix right; do \ - mkdir -p time_t.dir/$$type time_t.dir/$$type-shrunk && \ + mkdir -p time_t.dir/$$type time_t.dir/$$type-$(SDST) \ + time_t.dir/$$type-shrunk && \ case $$type in \ right) leap='-L leapseconds';; \ *) leap=;; \ esac && \ - $(ZIC) $$leap -d time_t.dir/$$type $(TDATA) && \ - $(AWK) '/^Rule/' $(TDATA) | \ + $(ZIC) $$leap -d time_t.dir/$$type $(XDST)data.zi && \ + $(AWK) '/^Rule/' $(XDST)data.zi | \ $(ZIC) $$leap -d time_t.dir/$$type - $(PACKRATDATA) && \ + case $(XDST) in \ + $(SDST)) \ + $(ZIC) $$leap -d time_t.dir/$$type-$(SDST) $(TDATA) && \ + $(AWK) '/^Rule/' $(TDATA) | \ + $(ZIC) $$leap -d time_t.dir/$$type-$(SDST) \ + $(XDST)data.zi && \ + diff -r time_t.dir/$$type time_t.dir/$$type-$(SDST);; \ + esac && \ $(ZIC) $$leap -d time_t.dir/$$type-shrunk tzdata.zi && \ diff -r time_t.dir/$$type time_t.dir/$$type-shrunk || exit; \ done @@ -741,7 +782,7 @@ clean_misc: rm -f core *.o *.out \ date tzselect version.h zdump zic yearistype libtz.a clean: clean_misc - rm -fr *.dir tzdata.zi tzdb-*/ $(TZS_NEW) + rm -fr *.dir *.zi tzdb-*/ $(TZS_NEW) maintainer-clean: clean @echo 'This command is intended for maintainers to use; it' diff --git a/NEWS b/NEWS index 4f763c0..c455f3c 100644 --- a/NEWS +++ b/NEWS @@ -2,6 +2,36 @@ News for the tz database Unreleased, experimental changes + Briefly: + Support zi parsers that mishandle negative DST offsets + + Changes to build procedure + + The new XDST macro in the Makefile lets the installer choose + XDST=full, which allows arbitrary DST offsets in the data, or + XDST=pdst, which allows only positive DST offsets. Choosing + XDST=full is arguably more correct for Ireland, which observes + Irish Standard Time (IST, UTC+01) in summer and GMT (UTC) in + winter. Choosing XDST=pdst is better for zoneinfo parsers that do + not work well with negative DST offsets, notably OpenJDK+CLDR. + On platforms using tzcode or similar APIs, XDST should not affect + any behavior other than that depending on the tm_isdst flag. + + For now this change does not affect client-visible behavior by + default, as the Makefile defaults to XDST=pdst and uncommented + parts of the data source files contain only pdst-format data. + After a bit of time for testing, XDST=full and full-format source + files are planned to become the default, so that parsers that + support negative DST offsets can get full data without changing + their build procedures. Parsers requiring positive DST offsets + should use the new file pdstdata.zi instead of tzdata.zi or the + source files 'africa' etc.: pdstdata.zi is pdst-compatible, it is + automatically built from the data source files, and it will + continue to be pdst-compatible regardless of XDST. To get + full-format data now, use the new file fulldata.zi, which will + continue to be full-format regardless of XDST. To get the format + selected by XDST, use tzdata.zi. + Changes to code The code is a bit more portable to MS-Windows. (Thanks to Manuela diff --git a/europe b/europe index 6c1ccbe..5aeda33 100644 --- a/europe +++ b/europe @@ -508,11 +508,27 @@ Link Europe/London Europe/Jersey Link Europe/London Europe/Guernsey Link Europe/London Europe/Isle_of_Man -# From Paul Eggert (2018-01-19): +# From Paul Eggert (2018-01-30): +# In January 2018 we discovered that the negative DST offsets in the +# Eire rules cause problems with tests for ICU: +# https://mm.icann.org/pipermail/tz/2018-January/025825.html +# and with tests for OpenJDK: +# https://mm.icann.org/pipermail/tz/2018-January/025822.html +# To work around this problem, zidst.awk translates the following data +# lines into two forms. First, fulldata.zi contains the full data, +# which includes negative DST offsets. Second, pdstdata.zi uses a +# traditional approximation for Irish time stamps after 1971-10-31 +# 02:00 UTC; although this approximation has tm_isdst flags that are +# the reverse of the full data, its UTC offsets are correct and this +# suffices for ICU and OpenJDK. Although this source file currently +# has pdstdata.zi lines active and fulldata.zi lines commented out, +# this is intended to change in the near future and downstream code +# should not rely on it. +# # The following is like GB-Eire and EU, except with standard time in # summer and negative daylight saving time in winter. -# Although currently commented out, this will need to become uncommented -# once the ICU/OpenJDK workaround is removed; see below. +# This rule set is active in fulldata.zi and is commented out in +# pdstdata.zi. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S #Rule Eire 1971 only - Oct 31 2:00u -1:00 GMT #Rule Eire 1972 1980 - Mar Sun>=16 2:00u 0 IST @@ -533,24 +549,13 @@ Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2 0:00 1:00 IST 1947 Nov 2 2:00s 0:00 - GMT 1948 Apr 18 2:00s 0:00 GB-Eire GMT/IST 1968 Oct 27 -# From Paul Eggert (2018-01-18): -# The next line should look like this: +# The next line is active in fulldata.zi and commented out in pdstdata.zi. # 1:00 Eire IST/GMT -# However, in January 2018 we discovered that the Eire rules cause -# problems with tests for ICU: -# https://mm.icann.org/pipermail/tz/2018-January/025825.html -# and with tests for OpenJDK: -# https://mm.icann.org/pipermail/tz/2018-January/025822.html -# To work around this problem, use a traditional approximation for -# time stamps after 1971-10-31 02:00 UTC, to give ICU and OpenJDK -# developers breathing room to fix bugs. This approximation has -# correct UTC offsets, but results in tm_isdst flags are the reverse -# of what they should be. This workaround is temporary and should be -# removed reasonably soon. +# These three lines are active in pdstdata.zi and commented out in +# fulldata.zi. 1:00 - IST 1971 Oct 31 2:00u 0:00 GB-Eire GMT/IST 1996 0:00 EU GMT/IST -# End of workaround for ICU and OpenJDK bugs. ############################################################################### diff --git a/zidst.awk b/zidst.awk new file mode 100644 index 0000000..7885e9a --- /dev/null +++ b/zidst.awk @@ -0,0 +1,50 @@ +# Convert tzdata source into full or positive-DST form + +# Contributed by Paul Eggert. This file is in the public domain. + +# This is not a general-purpose converter; it is designed for current tzdata. +# +# When converting to full form, the output can use negative DST offsets. +# +# When converting to positive-DST form, the output uses only positive +# DST offsets. The idea is for the output data to simulate the +# behavior of the input data as best it can within the constraints of +# positive DST offsets. +# +# In the input, lines requiring the full format are commented #[full] +# and the positive DST near-equivalents are commented #[pdst]. + +BEGIN { + dst_type["full"] = 1 + dst_type["pdst"] = 1 + + # The command line should set OUTFILE to the name of the output file, + # which should start with either "full" or "pdst". + todst = substr(outfile, 1, 4) + if (!dst_type[todst]) exit 1 +} + +/^Zone/ { zone = $2 } + +{ + in_comment = /^#/ + + # Test whether this line should differ between the full and the pdst versions. + Rule_Eire = /^#?Rule[\t ]+Eire[\t ]/ + Zone_Dublin_post_1968 \ + = (zone == "Europe/Dublin" && /^#?[\t ]+[01]:00[\t ]/ \ + && (!$(in_comment + 4) || 1968 < $(in_comment + 4))) + + # If so, uncomment the desired version and comment out the undesired one. + if (Rule_Eire || Zone_Dublin_post_1968) { + if ((Rule_Eire \ + || (Zone_Dublin_post_1968 && $(in_comment + 3) == "IST/GMT")) \ + == (todst == "full")) { + sub(/^#/, "") + } else if (/^[^#]/) { + sub(/^/, "#") + } + } +} + +{ print } -- 2.14.3

7 14

US marks centennial of daylight saving
by Paul Eggert March 30, 2018

March 30, 2018

Tonight marks 100 years since the introduction of daylight saving time as United States federal law. On March 30/31, 1918, New York City held a New-Year's-style celebration for the public in Madison Square Garden, along with a reception at the Aldine Club for the elite. The guest of honor was Marcus M. Marks, president of the Daylight Saving Association, and uncle of the now-more-famous Johnny Marks (who was later to write "Rudolph the Red-Nosed Reindeer"). Among other things, Marks got to push the button that advanced the 8-meter clocks atop what is now known as the Met Life Tower. See: Change in time begins tomorrow. Government's new daylight regulation goes into effect at 2 A. M. No confusion expected. New York Times. 1918-03-30. https://www.nytimes.com/packages/html/mobile/change-in-time.pdf

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[PROPOSED] * tz-link.html: Add worldclock.com.
by Paul Eggert March 26, 2018

March 26, 2018

--- tz-link.html | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tz-link.html b/tz-link.html index 7221777..6700c7f 100644 --- a/tz-link.html +++ b/tz-link.html @@ -239,8 +239,9 @@ These are listed roughly in ascending order of complexity and fanciness. <ul> <li><a href="https://time.is">Time.is</a> shows locations' time and zones.</li> -<li><a href="https://www.timejones.com">TimeJones.com</a> -and <a href="https://timezoneconverterapp.com">Time Zone Converter</a> +<li><a href="https://www.timejones.com">TimeJones.com</a>, +<a href="https://timezoneconverterapp.com">Time Zone Converter</a> and +<a href="http://worldclock.com">The World Clock</a> are time zone converters.</li> <li><a href="http://twiki.org/cgi-bin/xtra/tzdatepick.html">Date and Time Gateway</a> -- 2.7.4

1 0

Re: [tz] [PATCH1/1] Propose new zone for Crozet Islands
by REMI ACIEN March 25, 2018

March 25, 2018

Provenance : Courrier<https://go.microsoft.com/fwlink/?LinkId=550986> pour Windows 10 A new zone for Crozet Islands . Why not .

4 5

[PROPOSED] Spelling fixes
by Paul Eggert March 23, 2018

March 23, 2018

--- NEWS | 2 +- asia | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/NEWS b/NEWS index 8afe3a4..0297fd8 100644 --- a/NEWS +++ b/NEWS @@ -39,7 +39,7 @@ Release 2018d - 2018-03-22 07:05:46 -0700 Enderbury and Kiritimati skipped New Year's Eve 1994, not New Year's Day 1995. (Thanks to Kerry Shetline.) - Fix the 1912-01-01 transition for Portugual and its colonies. + Fix the 1912-01-01 transition for Portugal and its colonies. This transition was at 00:00 according to the new UT offset, not according to the old one. Also assume that Cape Verde switched on the same date as the rest, not in 1907. This affects diff --git a/asia b/asia index 998a7d4..7a6294a 100644 --- a/asia +++ b/asia @@ -2658,7 +2658,7 @@ Zone Asia/Karachi 4:28:12 - LMT 1907 # From Sharef Mustafa (2018-03-16): # Palestine summer time will start on Mar 24th 2018 by advancing the # clock by 60 minutes as per Palestinian cabinet decision published on -# the offical website, though the decree did not specify the exact +# the official website, though the decree did not specify the exact # time of the time shift. # http://www.palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e7a… # -- 2.14.3

1 0

[tz-announce] 2018d release of tz code and data available
by Paul Eggert March 23, 2018

March 23, 2018

The 2018d release of the tz code and data is available. It reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Briefly: Palestine starts DST a week earlier in 2018. Add support for vanguard and rearguard data consumers. Add subsecond precision to source data format, though not to data. Changes to future time stamps In 2018, Palestine starts DST on March 24, not March 31. Adjust future predictions accordingly. (Thanks to Sharef Mustafa.) Changes to past and future time stamps Casey Station in Antarctica changed from +11 to +08 on 2018-03-11 at 04:00. (Thanks to Steffen Thorsen.) Changes to past time stamps Historical transitions for Uruguay, represented by America/Montevideo, have been updated per official legal documents, replacing previous data mainly originating from the inventions of Shanks & Pottenger. This has resulted in adjustments ranging from 30 to 90 minutes in either direction over at least two dozen distinct periods ranging from one day to several years in length. A mere handful of pre-1991 transitions are unaffected; data since then has come from more reliable contemporaneous reporting. These changes affect various timestamps in 1920-1923, 1936, 1939, 1942-1943, 1959, 1966-1970, 1972, 1974-1980, and 1988-1990. Additionally, Uruguay's pre-standard-time UT offset has been adjusted westward by 7 seconds, from UT-03:44:44 to UT-03:44:51, to match the location of the Observatory of the National Meteorological Institute in Montevideo. (Thanks to Jeremie Bonjour, Tim Parenti, and Michael Deckers.) Enderbury and Kiritimati skipped New Year's Eve 1994, not New Year's Day 1995. (Thanks to Kerry Shetline.) Fix the 1912-01-01 transition for Portugual and its colonies. This transition was at 00:00 according to the new UT offset, not according to the old one. Also assume that Cape Verde switched on the same date as the rest, not in 1907. This affects Africa/Bissau, Africa/Sao_Tome, Asia/Macau, Atlantic/Azores, Atlantic/Cape_Verde, Atlantic/Madeira, and Europe/Lisbon. (Thanks to Michael Deckers.) Fix an off-by-1 error for pre-1913 timestamps in Jamaica and in Turks & Caicos. Changes to past time zone abbreviations MMT took effect in Uruguay from 1908-06-10, not 1898-06-28. There is no clock change associated with the transition. Changes to build procedure The new DATAFORM macro in the Makefile lets the installer choose among three source data formats. The idea is to lessen downstream disruption when data formats are improved. * DATAFORM=vanguard installs from the latest, bleeding-edge format. DATAFORM=main (the default) installs from the format used in the 'africa' etc. files. DATAFORM=rearguard installs from a trailing-edge format. Eventually, elements of today's vanguard format should move to the main format, and similarly the main format's features should eventually move to the rearguard format. * In the current version, the main and rearguard formats are identical and match that of 2018c, so this change does not affect default behavior. The vanguard format currently contains one feature not in the main format: negative SAVE values. This improves support for Ireland, which uses Irish Standard Time (IST, UTC+01) in summer and GMT (UTC) in winter. tzcode has supported negative SAVE values for decades, and this feature should move to the main format soon. However, it will not move to the rearguard format for quite some time because some downstream parsers do not support it. * The build procedure constructs three files vanguard.zi, main.zi, and rearguard.zi, one for each format. The files represent the same data as closely as the formats allow. These three files are intended for downstream data consumers and are not installed. Zoneinfo parsers that do not support negative SAVE values should start using rearguard.zi, so that they will be unaffected when the negative-DST feature moves from vanguard to main. Bleeding-edge Zoneinfo parsers that support the new features already can use vanguard.zi; in this respect, current tzcode is bleeding-edge. The Makefile should now be safe for parallelized builds, and 'make -j to2050new.tzs' is now much faster on a multiprocessor host with GNU Make. When built with -DSUPPRESS_TZDIR, the tzcode library no longer prepends TZDIR/ to file names that do not begin with '/'. This is not recommended for general use, due to its security implications. (From a suggestion by Manuela Friedrich.) Changes to code zic now accepts subsecond precision in expressions like 00:19:32.13, which is approximately the legal time of the Netherlands from 1835 to 1937. However, because it is questionable whether the few recorded uses of non-integer offsets had subsecond precision in practice, there are no plans for tzdata to use this feature. (Thanks to Steve Allen for pointing out the limitations of historical data in this area.) The code is a bit more portable to MS-Windows. Installers can compile with -DRESERVE_STD_EXT_IDS on MS-Windows platforms that reserve identifiers like 'localtime'. (Thanks to Manuela Friedrich). Changes to documentation and commentary theory.html now outlines tzdb's extensions to POSIX's model for civil time, and has a section "POSIX features no longer needed" that lists POSIX API components that are now vestigial. (From suggestions by Steve Summit.) It also better distinguishes time zones from tz regions. (From a suggestion by Guy Harris.) Commentary is now more consistent about using the phrase "daylight saving time", to match the C name tm_isdst. Daylight saving time need not occur in summer, and need not have a positive offset from standard time. Commentary about historical transitions in Uruguay has been expanded with links to many relevant legal documents. (Thanks to Tim Parenti.) Commentary now uses some non-ASCII characters with Unicode value less than U+0100, as they can be useful and should work even with older editors such as XEmacs. Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2018d.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2018d.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2018d.tar.lz As usual, links to the latest release files are here: https://www.iana.org/time-zones/repository/tzcode-latest.tar.gz https://www.iana.org/time-zones/repository/tzdata-latest.tar.gz https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz Links are also available via plain HTTP, and via FTP from ftp://ftp.iana.org/tz/releases with the same basenames as above. Each release file has a GPG signature, which can be retrieved by appending ".asc" to the above URLs. Copies of these signatures are appended to this message. This release corresponds to commit bd850bce5d292caaa5eba2c2088f6d4ad8024647 dated 2018-03-22 07:05:46 -0700 and tagged '2018d' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: e79a95e235cd384247e4112d5154f30eb7b40f28dab4872ed9153e45bf56569949d0845bc1b9ad24b7a5f9609bdadfc892959dbf0d540dbca79b18398dc4f930 tzcode2018d.tar.gz ee961aedc34e134172523a29fb8a9358f42649d06ffcd2d8a6ad86eeb174a80af5bfc4637e9e52ecdc51fa3d01afef9fff660a69ed72904ff747a59b5634830b tzdata2018d.tar.gz 12c839846c147b83ace915e399fe447f93e83b500327fb4549b6039615f548d7167594168b5c4779ee1f33d7a1b8c2e294aa13cd35823d778617065ad9ad8ea5 tzdb-2018d.tar.lz Here are the GPG checksums for the release files: -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJas7pNAAoJEO2X6Q5iqn40dn8P+gI1f6sWKcA8iuDkRWundwBk Y92iYPChJDbgUSiWw3o+qyFmVUz0P1PZkB3rCTFhtyY8u6zCiO4+6xADyS+le3II iwwIg2yCqPxBXDXYkcFvSrXDuOo1hG009L1k9nKmv6RvO7lvr/o0K/pRQTWKiV2w jS9gPZeZ/ggTdcyaD9tzFNwDe0nCg54rwFs3Gy+YK2+8fNhLmYJCp3WJydza9zgU pBMMP868h1ZY9uWEZcWX3mstyKD4egFRfyHMj4XPVrnGwpMT5u7groiq2TZv/MXV A/HDxa4jU+El6RW0TwAVnGEwUSJ3L3I7B6/Pbf3jf+VCTYkw67cX/WrtSNop1E03 ujPZVqYr5N8HLu/VO/R2R+OccvMZ1X/URehA4068w/+ESG8X8AbRVBYGavpFmnUv uHOeOFgzcJUQqFU1fqAEdhlrYqqbnsRFJN8QX1QWwQs5fUAzNSAkAB+kTEVCAvhK 1xaxlNaZqoWqT0bYvD2TL+VLkPNHvu8RMpa/rhmjE23AWfYuSJsAABNMBpB5t6ux SbBOBeJ+a5a1rZwya0hxeX6A3BCBPXKBjnt8MjBnV1s8Ns4Ng7jQ5ZqOXtlSo4ER fYHbVQITXnE+DbuM1zF6RY1dwmCLvkxpdM5lifgiYCdcDzttsifDdrq5WM+pJsz5 3yTFJFsk6et2ekpHRugZ =MMy8 -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJas7pNAAoJEO2X6Q5iqn40BqwP/A8PU9mzxssBdQirWsuGhN3E +3hk6i7UFLrCHixbpN03y7r8ujkhRvkjLSrA2tcrYEK9t8NLkhQIrnmlVjEOQEcz +qiZWJV55kd2dhk2EE+pc8xXuqRsnId4r/xCF+D2wxl6IZpMEFelRCRiCGgszhDS FSv3UjlnpBv3uB5UgKdOFJKYcTvfOZ5jmpt1O6Ma9YNxqlc2+s8hUBR3VEtzancU +AyCoL/sUrijfGOZPSznhGJJ3lC5LkjkWqC0BYB5EI3YeClVtGWoZlD64jShJhWT pe3CAimaEibz1ty1tGz4Agdd0vQErvyCPQY6wy1pRYPW5wb++JomMVub7Uh7w/6o pvrkVaVqeiWeENoI6NRnmC+ANSaz6/lF61HM36VZ1XaCgmeCDaLHn31WKHRPctse r26++PyCIJwllaTNfGynjkAKUeBJJwwR8a/sjPeqEfEgoDKV1EpQVCBbPna3hmTq 8nzt11WsTNG+aocYr3hevSYiyxEWOLp5O9UaiTtVDc91Mhk2U9E9Fa7Zva35ZhjJ oRPS+AU5GFfWzgiW8XOLURqvwRNqUUudNaXy2wVuzwROdmboyewzB//MBavkI+r+ raI+coG2ZJoPcQmuRCUcjs1+JnNBL3sZT68/jTy2w0LURfUP9V+dUuJgjtRbMCtb Myzq3RCYNI/x3EjU/xcb =ibli -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJas7pOAAoJEO2X6Q5iqn40ursP/02PBDqd4eb8qrKrjScYt+I4 wnXMcjy9AmsfhPq1k1x6ZUI5qIbidrMD9S9m4NwKBGyvGxxcneWWJ5Yoln+K95YJ tCtm40eHypeVUlsXJExv3JB0hJ7d7eY2olbY/DcK6CTYt7R4amGU/ClCQpEIVTz2 HcVeH8oOPRUG0STyzKh2lPF0Wua6LUGp9/nZWgsETsXrAQ8MaC/vlyrjiEJsvwP1 65bOoNiRKiGU7tp6JhFE8v85vLKgkzmHeysWJdMt0aczH1DMwlSWS9ViEauLugK7 K0ERNC22WwEzya0EKmTMcRFHYIT1B9/dg0Tbb2h2KKRqu7kzd2NVr6ap5Cu6ezYO hThz6i09OL6ADSwSk4c6JeUUjX7rGG6DNu0pCQYlNJ9xIhi+U/FAuTvzBfU3uJe3 8akO1UGwUWA/TwtnQTv08uGGia+Wt/GbQStkidZFVvdbXcjSH39GlhRXRWDKSOCv wDVNMkopDQOsxwoFgAE45dacQZh2Qv29eT4pG6Eo2J+eXJR2lb5edQkDZNLk2DcE 6frcVchrdBeaUUSA1+ssH3B+hVwwJ7IX/FCwhKDZgxyy67oqGVChkeUjes4GJ5vB 0t7/XZTORvsH6XwBNDKoXS0fswtZiwhPr3YV1nZHwKCa0OWIs9WsPt587K82Hlsf mROMmzivSut43pdALRCr =zKoc -----END PGP SIGNATURE----- _______________________________________________ tz-announce mailing list tz-announce(a)iana.org https://mm.icann.org/mailman/listinfo/tz-announce

1 0

[PROPOSED] * tz-link.html: Tweak URLs.
by Paul Eggert March 22, 2018

March 22, 2018

--- tz-link.html | 56 +++++++++++++++++++++++++++----------------------------- 1 file changed, 27 insertions(+), 29 deletions(-) diff --git a/tz-link.html b/tz-link.html index f3ac4ed..7221777 100644 --- a/tz-link.html +++ b/tz-link.html @@ -7,7 +7,9 @@ <body> <h1>Sources for time zone and daylight saving time data</h1> <p> -Time zone and daylight saving rules are controlled by individual +<a href="https://en.wikipedia.org/wiki/Time_zone">Time zone</a> and +<a href="https://en.wikipedia.org/wiki/Daylight_saving_time">daylight-saving</a> +rules are controlled by individual governments. They are sometimes changed with little notice, and their histories and planned futures are often recorded only fitfully. Here is a summary of attempts to organize and record relevant data in this @@ -20,12 +22,9 @@ time zone database 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 <a href="https://en.wikipedia.org/wiki/Time_zone">time zone</a> -boundaries and -<a href="https://en.wikipedia.org/wiki/Daylight_saving_time">daylight-saving</a> -rules. -This database (often called <code>zoneinfo</code> or -<code><abbr>tz</abbr></code>) +to time zone boundaries and daylight saving rules. +This database (known as <code><abbr>tz</abbr></code>, +<code><abbr>tzdb</abbr></code>, or <code>zoneinfo</code>) is used by several implementations, including <a href="https://www.gnu.org/software/libc/">the @@ -109,7 +108,7 @@ gzip -dc tzdata-latest.tar.gz | tar -xf - release in a single-tarball format containing extra data useful for regression testing:</p> <pre style="margin-left: 2em"><code>wget <a href="https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz">https://www.iana.org/time-zones/repository/tzdb-latest.tar.lz</a> -<a href="http://www.nongnu.org/lzip/">lzip</a> -dc tzdb-latest.tar.lz | tar -xf - +<a href="https://www.nongnu.org/lzip/">lzip</a> -dc tzdb-latest.tar.lz | tar -xf - </code></pre> <p>These commands use convenience links to the latest release of the <code><abbr>tz</abbr></code> database hosted by the @@ -130,7 +129,7 @@ Since version 2016h, each release has contained a text file named The releases are also available in an <a href="ftp://ftp.iana.org/tz/releases/"><abbr title="File Transfer Protocol">FTP</abbr> directory</a> via a -less-secure protocol .</p> +less-secure protocol.</p> <p>Alternatively, a development repository of code and data can be retrieved from <a href="https://github.com">GitHub</a> via the shell command:</p> @@ -192,7 +191,7 @@ href="http://www.oracle.com/technetwork/java/javase/tzupdater-readme-136440.html Java, <a href="http://www.joda.org/joda-time/tz_update.html">Joda-Time</a>, <a href="https://dev.mysql.com/doc/refman/en/time-zone-support.html">MySQL</a>, and <a -href="http://nodatime.org/userguide/tzdb">Noda Time</a> (see below). +href="https://nodatime.org/userguide/tzdb">Noda Time</a> (see below). </p> <p>Sources for the <code><abbr>tz</abbr></code> database are <a href="https://en.wikipedia.org/wiki/UTF-8"><abbr @@ -203,7 +202,7 @@ title="linefeed">LF</abbr></a>, which can be modified by common text editors such as <a href="https://www.gnu.org/software/emacs/">GNU Emacs</a>, <a href="https://wiki.gnome.org/Apps/Gedit">gedit</a>, and -<a href="http://www.vim.org">vim</a>. +<a href="https://www.vim.org">vim</a>. Specialized source-file editing can be done via the <a href="https://packagecontrol.io/packages/zoneinfo">Sublime zoneinfo</a> package for <a @@ -258,7 +257,7 @@ timezone information for all countries</a> displays tables of DST rules. Worldwide</a> lets you sort zone names and convert times.</li> <li><a href="https://24timezones.com">24TimeZones</a> has a world time map and a time converter.</li> -<li><a href="http://www.zeitverschiebung.net/en/">Time Difference</a> +<li><a href="https://www.zeitverschiebung.net/en/">Time Difference</a> calculates the current time difference between locations.</li> <li><a href="http://www.wx-now.com">Weather Now</a> and <a href="http://www.thetimenow.com">The Time Now</a> list the weather too.</li> @@ -290,7 +289,7 @@ variant <a href="https://tools.ietf.org/html/rfc6321">xCal</a> title="Extensible Markup Language">XML</abbr></a> format, and a variant <a href="https://tools.ietf.org/html/rfc7265">jCal</a> (Internet <abbr>RFC</abbr> 7265) -uses <a href="http://www.json.org"><abbr +uses <a href="https://www.json.org"><abbr title="JavaScript Object Notation">JSON</abbr></a> format.</li> </ul> <h2 id="compilers">Other <code><abbr>tz</abbr></code> compilers</h2> @@ -374,7 +373,7 @@ License">LGPL</abbr>)</a>.</li> <li><abbr>ICU</abbr> (mentioned <a href="#ICU">above</a>) contains compilers and Java-based libraries.</li> </ul> -<li><a href="http://nodatime.org">Noda Time – Date and +<li><a href="https://nodatime.org">Noda Time – Date and time <abbr>API</abbr> for .NET</a> and <a href="http://www.babiej.demon.nl/Tz4Net/main.htm">TZ4Net</a> are similar to Joda-Time and Time4J, but for the .NET framework instead of @@ -458,7 +457,7 @@ library that reads tz binary files and converts time stamps from one time zone or format to another. It is used by <a href="https://secure.php.net"><abbr title="PHP: Hypertext Preprocessor">PHP</abbr></a>, -<a href="http://hhvm.com"><abbr title="HipHop Virtual Machine">HHVM</abbr></a>, +<a href="https://hhvm.com"><abbr title="HipHop Virtual Machine">HHVM</abbr></a>, and <a href="https://www.mongodb.com">MongoDB</a>. It is freely available under the <abbr>MIT</abbr> license.</li> <li><a href="https://github.com/bigeasy/timezone">Timezone</a> is a @@ -518,7 +517,7 @@ the older, proprietary method of Microsoft Windows 2000 and later, which stores time zone data in the <a href="https://en.wikipedia.org/wiki/Windows_Registry">Windows Registry</a>. The <a -href="http://unicode.org/cldr/charts/latest/supplemental/zone_tzid.html">Zone → +href="https://unicode.org/cldr/charts/latest/supplemental/zone_tzid.html">Zone → Tzid table</a> or <a href="https://unicode.org/repos/cldr/trunk/common/supplemental/windowsZones.xml"><abbr>XML</abbr> file</a> of the <abbr>CLDR</abbr> data maps proprietary zone IDs @@ -528,7 +527,7 @@ href="https://www.oracle.com/java/index.html">Oracle Java</a> contains a copy of a subset of a recent <code><abbr>tz</abbr></code> database in a Java-specific format.</li> -<li><a href="http://www.relativedata.com/time-zone-master">Time Zone +<li><a href="https://www.relativedata.com/time-zone-master">Time Zone Master</a> is a Microsoft Windows clock program that can automatically download, compile and use <code>tz</code> releases. The Basic version is free.</li> @@ -543,8 +542,8 @@ licenses</a> to <code><abbr>tz</abbr></code> contributors.</li> <li><a href="https://www.astro.com/atlas">Time-zone Atlas</a> is Astrodienst's Web version of Shanks and Pottenger's time zone history atlases also published in <a -href="http://astrocom.com/astrology-products/software/acs-atlas-software">software</a> -form by <a href="http://astrocom.com">ACS-Starcrafts</a>. +href="https://astrocom.com/astrology-products/software/acs-atlas-software">software</a> +form by <a href="https://astrocom.com">ACS-Starcrafts</a>. These atlases are extensive but unreliable, as Shanks appears to have guessed many <abbr>UT</abbr> offsets and transitions. The atlases cite no sources and do not indicate which entries are guesswork.</li> @@ -552,7 +551,7 @@ sources and do not indicate which entries are guesswork.</li> its own <code>tztab</code>(4) format.</li> <li>Microsoft Windows has proprietary data mentioned <a href="#System.TimeZoneInfo">above</a>.</li> -<li><a href="http://www.worldtimeserver.com">World Time Server</a> +<li><a href="https://www.worldtimeserver.com">World Time Server</a> is another time zone database.</li> <li><a href="http://tycho.usno.navy.mil/tzones.html">World Time Zones</a> contains data from the Time Service Department of the @@ -578,14 +577,14 @@ recent editions. The pictorial quality is good, but the maps do not indicate daylight saving time, and parts of the data are a few years out of date.</li> -<li><a href="http://www.worldtimezone.com">Current time around the world +<li><a href="https://www.worldtimezone.com">Current time around the world and standard time zones map of the world</a> has several fancy time zone maps; it covers Russia particularly well. The maps' pictorial quality is not quite as good as the <abbr>CIA</abbr>'s but the maps are more up to date.</li> <li><a -href="http://blog.poormansmath.net/how-much-is-time-wrong-around-the-world/">How +href="https://blog.poormansmath.net/how-much-is-time-wrong-around-the-world/">How much is time wrong around the world?</a> maps the difference between mean solar and standard time, highlighting areas such as western China where the two differ greatly. It's a bit out of date, unfortunately.</li> @@ -666,9 +665,8 @@ political subdivision data related to time zones.</li> <li><a href="http://home.kpn.nl/vanadovv/time/Multizones.html">Time zone boundaries for multizone countries</a> summarizes legal boundaries between time zones within countries.</li> -<li>Manifold.net's <a -href="http://manifold.net/info/freestuff.shtml">Free Downloads for -Manifold System Users</a> includes a Manifold-format map of +<li><a href="http://manifold.net/info/freestuff.shtml">Manifold Software +– GIS and Database Tools</a> includes a Manifold-format map of world time zone boundaries distributed under the <abbr>GPL</abbr>.</li> <li>A ship within the <a @@ -808,12 +806,12 @@ href="https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol"><abbr>D option for a server to configure a client's time zone and daylight saving settings automatically.</li> <li><a -href="http://www.cv.nrao.edu/~rfisher/Ephemerides/times.html">Astronomical +href="https://www.cv.nrao.edu/~rfisher/Ephemerides/times.html">Astronomical Times</a> explains more abstruse astronomical time scales like <abbr title="Terrestrial Dynamic Time">TDT</abbr>, <abbr title="Geocentric Coordinate Time">TCG</abbr>, and <abbr title="Barycentric Dynamic Time">TDB</abbr>. -<a href="http://www.ucolick.org/~sla/leapsecs/timescales.html">Time +<a href="https://www.ucolick.org/~sla/leapsecs/timescales.html">Time Scales</a> goes into more detail, particularly for historical variants.</li> <li>The <a href="https://www.iau.org"><abbr title="International Astronomical Union">IAU</abbr></a>'s <a @@ -859,7 +857,7 @@ and Klepczynski's 1999 proposal to discontinue leap seconds</a>, discussed further in <a href="https://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf">The leap second: its history and possible future</a>. -<a href="http://www.ucolick.org/~sla/leapsecs/"><abbr>UTC</abbr> +<a href="https://www.ucolick.org/~sla/leapsecs/"><abbr>UTC</abbr> might be redefined without Leap Seconds</a> gives pointers on this contentious issue, which was active until 2015 and could become active @@ -873,7 +871,7 @@ zone names, abbreviations, identifiers, and formats. For example, it contains French translations for "Eastern European Summer Time", "<abbr title="Eastern European Summer Time">EEST</abbr>", and "Bucharest". Its -<a href="http://unicode.org/cldr/charts/latest/by_type/">by-type +<a href="https://unicode.org/cldr/charts/latest/by_type/">by-type charts</a> show these values for many locales. Data values are available in both <abbr title="Locale Data Markup Language">LDML</abbr> (an <abbr>XML</abbr> format) and <abbr>JSON</abbr>. -- 2.7.4

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Re: [tz] proposed tz data changes for Iran, Sri Lanka, Alberta, Thule, etc.
by REMI ACIEN March 21, 2018

March 21, 2018

Provenance : Courrier<https://go.microsoft.com/fwlink/?LinkId=550986> pour Windows 10 For Zone Asia/Seoul +8 :27 :52 . Why not .

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[PROPOSED] Put ziguard.awk in tzdata and tzdb tarballs
by Paul Eggert March 20, 2018

March 20, 2018

(Problem reported by Patsy Franklin.) * Makefile (AWK_SCRIPTS): Add ziguard.awk. --- Makefile | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 3c0479a..c69e01b 100644 --- a/Makefile +++ b/Makefile @@ -486,7 +486,8 @@ TZDATA_ZI_DEPS= ziguard.awk zishrink.awk version $(TDATA) $(PACKRATDATA) DSTDATA_ZI_DEPS= ziguard.awk $(TDATA) $(PACKRATDATA) DATA= $(TDATA_TO_CHECK) backzone iso3166.tab leap-seconds.list \ leapseconds yearistype.sh $(ZONETABLES) -AWK_SCRIPTS= checklinks.awk checktab.awk leapseconds.awk zishrink.awk +AWK_SCRIPTS= checklinks.awk checktab.awk leapseconds.awk \ + ziguard.awk zishrink.awk MISC= $(AWK_SCRIPTS) zoneinfo2tdf.pl TZS_YEAR= 2050 TZS= to$(TZS_YEAR).tzs @@ -903,6 +904,9 @@ tarballs traditional_tarballs signatures traditional_signatures: version VERSION=`cat version` && \ $(MAKE) VERSION="$$VERSION" $@_version +# These *_version rules are intended for use if VERSION is set by some +# other means. Ordinarily these rules are used only by the above +# non-_version rules, which set VERSION on the 'make' command line. tarballs_version: traditional_tarballs_version tzdb-$(VERSION).tar.lz traditional_tarballs_version: \ tzcode$(VERSION).tar.gz tzdata$(VERSION).tar.gz -- 2.14.3

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switches at 1883-11-18 at the same instant
by Michael H Deckers March 20, 2018

March 20, 2018

On 2018-03-19 09:18, Glenn A. Walsh wrote in a post to a different mailing list: > Centennial: Official Enactment of U.S. Time Zones & Daylight Saving Time > A century ago today (March 19), U.S.President Woodrow Wilson signed into law the Standard Time Act of1918, which officially established time zones in the United States aswell as Daylight Saving Time. Although time zones had beenunofficially observed for a few decades. > MORE INFO - CLICK ON IMAGE OR LINK --- LIKE THIS POST? - PLEASE SHARE! > Link >>> http://spacewatchtower.blogspot.com/2018/03/centennial-official-enactment-o… > The link describes (among many other things) how the Allegheny Observatory synchronized the switch of US railway times to grid time zones. As one would expect, the switch was done at a single instant, when UT was 1883-11-18 + 18 h. This differs from the current description in tzdb which uses different instants for different target time zones -- not a likely choice for simplifying a nationwide railway schedule. Thus I propose: - Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 + Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 10:07:02 - Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11 + Zone America/Boise -7:44:49 - LMT 1883 Nov 18 10:15:11 - Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42 + Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 10:31:42 - Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00:04 + Zone America/Denver -6:59:56 - LMT 1883 Nov 18 11:00:04 - Zone America/North_Dakota/Beulah -6:47:07 - LMT 1883 Nov 18 12:12:53 + Zone America/North_Dakota/Beulah -6:47:07 - LMT 1883 Nov 18 11:12:53 - Zone America/North_Dakota/New_Salem -6:45:39 - LMT 1883 Nov 18 12:14:21 + Zone America/North_Dakota/New_Salem -6:45:39 - LMT 1883 Nov 18 11:14:21 - Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48 + Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 11:14:48 - Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58 + Zone America/New_York -4:56:02 - LMT 1883 Nov 18 13:03:58 Michael Deckers.

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[PROPOSED] Update .PHONY list
by Paul Eggert March 20, 2018

March 20, 2018

* Makefile (.PHONY): Update to match current Makefile contents. --- Makefile | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/Makefile b/Makefile index 979c0a2..3c0479a 100644 --- a/Makefile +++ b/Makefile @@ -964,14 +964,17 @@ zic.o: private.h tzfile.h version.h .KEEP_STATE: .PHONY: ALL INSTALL all -.PHONY: check check_character_set check_links +.PHONY: check check_character_set check_links check_name_lengths .PHONY: check_public check_sorted check_tables .PHONY: check_time_t_alternatives check_tzs check_web check_white_space .PHONY: check_zishrink -.PHONY: clean clean_misc force_tzs +.PHONY: clean clean_misc dummy.zd 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: tarballs tarballs_version +.PHONY: traditional_signatures traditional_signatures_version +.PHONY: traditional_tarballs traditional_tarballs_version +.PHONY: typecheck .PHONY: zonenames zones .PHONY: $(ZDS) -- 2.14.3

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Re: [tz] [PATCH] * asia (Asia/Seoul) correct DST.
by REMI ACIEN March 19, 2018

March 19, 2018

For Zone Asia/Seoul LMT + 8 :26 :52 . Provenance : Courrier<https://go.microsoft.com/fwlink/?LinkId=550986> pour Windows 10

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Re: [tz] more on Palm Springs
by Paul Eggert March 18, 2018

March 18, 2018

Steve Allen wrote: > If inserting the Palm Springs story into tzdb is going to happen then > UCR has scanned copies of the local paper. Thanks for the URLs. Another city of two-timers, eh? Proposed patches attached.

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[PATCH] * backzone: Chillicothe, city of two-timers.
by Paul Eggert March 18, 2018

March 18, 2018

--- backzone | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/backzone b/backzone index 71cb066..de247f0 100644 --- a/backzone +++ b/backzone @@ -274,6 +274,16 @@ Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown -5:07:10 - KMT 1912 Feb # Kingston Mean Time -5:00 - EST +# United States +# +# From Paul Eggert (2018-03-18): +# America/Chillicothe would be tricky, as it was a city of two-timers: +# "To prevent a constant mixup at Chillicothe, caused by the courthouse +# clock running on central time and the city running on 'daylight saving' +# time, a third hand was added to the dial of the courthouse clock." +# -- Ohio news in brief. The Cedarville Herald. 1920-05-21;43(21):1 (col. 5) +# https://digitalcommons.cedarville.edu/cedarville_herald/794 + # Canada Zone America/Coral_Harbour -5:32:40 - LMT 1884 -5:00 NT_YK E%sT 1946 -- 2.14.3

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Keeping track of Japanese Era data
by Florian Weimer March 17, 2018

March 17, 2018

Would the tz project be interested in keeping track of the Japanese Era information? glibc currently stores it as part of its locale data, but I think this causes some issues (particularly with downstream builds). Thanks, Florian

4 3

Palestine summer time 2018
by Sharef Mustafa March 16, 2018

March 16, 2018

Hi, Palestine summer time will start on Mar 24th 2018 by advancing the clock by 60 minutes as per Palestinian cabinet decision published on the offical website, though the decree did not specify the exact time of the time shift., http://www.palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e7a… this affects Asia/Gaza & Asia/Hebron time zones. BR Sharef Mustafa

2 1

Phone glitch leaves some Hobartians behind the times
by Gilmore Davidson March 16, 2018

March 16, 2018

http://www.abc.net.au/news/2018-03-16/time-glitch-leaves-some-hobart-reside… <http://www.abc.net.au/news/2018-03-16/time-glitch-leaves-some-hobart-reside…> “[National telecom provider] Telstra has apologised for a fault that caused thousands of Tasmanian customers to have the wrong time displayed on their phones. The issue affecting Android operating systems caused widespread confusion, with many people reporting being late to work after their phones were running an hour early."

3 2

Casey time zone change
by Steffen Thorsen March 14, 2018

March 14, 2018

Australian Antarctic Division informed us: With the conclusion of the Australian Antarctica Division’s aviation program for the 2017/18 season, please change your time for Casey station to *UTC +8* on Sunday 11th March (this change will take place on 11th March at 4am (UTC +11)). Best regards, Steffen Thorsen - timeanddate.com

3 3

Permanent DST in Florida: step 2 of 4 completed
by Arthur David Olson March 12, 2018

March 12, 2018

"The Florida Senate passed the Sunshine Protection Act on Tuesday, three weeks after the state’s House of Representatives, and sent it to Gov. Rick Scott..." https://www.nytimes.com/2018/03/08/us/daylight-saving-time-florida.html?smi… (I have hopes for a new CBS hit series, "DST: Miami.") (Less frivolously, discussions about using EDT, AST, or FST--and how to set tm_isdst--can begin in earnest.) @dashdashado

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[PATCH] * tz-art.html: Add a Veep episode.
by Paul Eggert March 12, 2018

March 12, 2018

--- tz-art.html | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/tz-art.html b/tz-art.html index 480b9e1..9624d8c 100644 --- a/tz-art.html +++ b/tz-art.html @@ -81,19 +81,19 @@ doing so got a crook trying to be declared dead to emerge a bit too early from the titular enclosure. </li> <li> -The 1960s ITC television series <em>The Prisoner</em> included an episode -entitled "The Chimes of Big Ben" in which our protagonist tumbled to +"The Chimes of Big Ben", <em>The Prisoner</em>, episode 2, ITC, 1967-10-06. +Our protagonist tumbles to the fraudulent nature of a Poland-to-England escape upon hearing "Big Ben" chiming on Polish local time. </li> <li> -The series <em>Seinfeld</em> included an episode entitled "The Susie," first -broadcast 1997-02-13, in which Kramer decides that daylight saving time +"The Susie", <em>Seinfeld</em>, season 8, episode 15, NBC, 1997-02-13. +Kramer decides that daylight saving time isn't coming fast enough, so he sets his watch ahead an hour. </li> <li> -The "20 Hours in America" episode of <em>The West Wing</em>, -first aired 2002-09-25, contained a <a +"20 Hours in America", <em>The West Wing</em>, season 4, episodes 1–2, +2002-09-25, contained a <a href="https://www.youtube.com/watch?v=-J1NHzQ1sgc">scene</a> that saw White House staffers stranded in Indiana; they thought they had time to catch Air Force One but were done in by intra-Indiana local time changes. @@ -165,6 +165,11 @@ CBS, 2016-01-17. The applicability of a contract hinges on the time zone associated with a video timestamp. </li> +<li> +"Justice", <em>Veep</em>, season 6, episode 4, HBO, 2017-05-07. +Jonah's inability to understand DST ends up impressing a wealthy +backer who sets him up for a 2020 presidential run. +</li> </ul> <h2>Books, plays, and magazines</h2> <ul> -- 2.14.3

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