October 2022 - tz - lists.iana.org

Syria Time has changed
by Rami M Oct. 31, 2022

Oct. 31, 2022

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Grouped country lists are confusing
by Stephen Colebourne Oct. 31, 2022

Oct. 31, 2022

Recent changes merged the comments acting as country headers. Thus, a typical merged header is now: # Denmark # Germany # Norway # Sweden It is very confusing to suggest that all four countries are evenly represented here, as the commentary is typically all about the primary country (Germany in this case). The alphabetical list is decidedly unhelpful too, as nothing indicates which country the Zone's city relates to. Can I propose these comments be altered to something like: # Germany # also applicable since 1970 to Denmark # also applicable since 1970 to Norway # also applicable since 1970 to Sweden thanks Stephen

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[tz-announce] 2022f release of tz code and data available
by Paul Eggert via tz-announce Oct. 30, 2022

Oct. 30, 2022

The 2022f release of the tz code and data is available. This release contains the following changes. The most urgent one is the change for Chihuahua, Mexico which affects timestamps starting Sunday. Briefly: Mexico will no longer observe DST except near the US border. Chihuahua moves to year-round -06 on 2022-10-30. Fiji no longer observes DST. Move links to 'backward'. In vanguard form, GMT is now a Zone and Etc/GMT a link. zic now supports links to links, and vanguard form uses this. Simplify four Ontario zones. Fix a Y2438 bug when reading TZif data. Enable 64-bit time_t on 32-bit glibc platforms. Omit large-file support when no longer needed. In C code, use some C23 features if available. Remove no-longer-needed workaround for Qt bug 53071. Changes to future timestamps Mexico will no longer observe DST after 2022, except for areas near the US border that continue to observe US DST rules. On 2022-10-30 at 02:00 the Mexican state of Chihuahua moves from -07 (-06 with DST) to year-round -06, thus not changing its clocks that day. The new law states that Chihuahua near the US border no longer observes US DST. (Thanks to gera for the heads-up about Chihuahua.) Fiji will not observe DST in 2022/3. (Thanks to Shalvin Narayan.) For now, assume DST is suspended indefinitely. Changes to data Move links to 'backward' to ease and simplify link maintenance. This affects generated data only if you use 'make BACKWARD='. GMT is now a Zone and Etc/GMT a link instead of vice versa, as GMT is needed for leap second support whereas Etc/GMT is not. However, this change exposes a bug in TZUpdater 2.3.2 so it is present only in vanguard form for now. Vanguard form now uses links to links, as zic now supports this. Changes to past timestamps Simplify four Ontario zones, as most of the post-1970 differences seem to have been imaginary. (Problem reported by Chris Walton.) Move America/Nipigon, America/Rainy_River, and America/Thunder_Bay to 'backzone'; backward-compatibility links still work, albeit with some different timestamps before November 2005. Changes to code zic now supports links to links regardless of input line order. For example, if Australia/Sydney is a Zone, the lines Link Australia/Canberra Australia/ACT Link Australia/Sydney Australia/Canberra now work correctly, even though the shell commands ln Australia/Canberra Australia/ACT ln Australia/Sydney Australia/Canberra would fail because the first command attempts to use a link Australia/Canberra that does not exist until after the second command is executed. Previously, zic had unspecified behavior if a Link line's target was another link, and zic often misbehaved if a Link line's target was a later Link line. Fix line number in zic's diagnostic for a link to a link. Fix a bug that caused localtime to mishandle timestamps starting in the year 2438 when reading data generated by 'zic -b fat' when distant-future DST transitions occur at times given in standard time or in UT, not the usual case of local time. This occurs when the corresponding .zi Rule lines specify DST transitions with TO columns of 'max' and AT columns that end in 's' or 'u'. The number 2438 comes from the 32-bit limit in the year 2038, plus the 400-year Gregorian cycle. (Problem reported by Bradley White.) On glibc 2.34 and later, which optionally supports 64-bit time_t on platforms like x86 where time_t was traditionally 32 bits, default time_t to 64 instead of 32 bits. This lets functions like localtime support timestamps after the year 2038, and fixes year-2038 problems in zic when accessing files dated after 2038. To continue to limit time_t to 32 bits on these platforms, use "make CFLAGS='-D_TIME_BITS=32'". In C code, do not enable large-file support on platforms like AIX and macOS that no longer need it now that tzcode does not use off_t or related functions like 'stat'. Large-file support is still enabled by default on GNU/Linux, as it is needed for 64-bit time_t support. In C code, prefer C23 keywords to pre-C23 macros for alignof, bool, false, and true. Also, use the following C23 features if available: __has_include, unreachable. zic no longer works around Qt bug 53071, as the relevant Qt releases have been out of support since 2019. This change affects only fat TZif files, as thin files never had the workaround. zdump no longer modifies the environ vector when compiled on platforms lacking tm_zone or when compiled with -DUSE_LTZ=0. This avoid undefined behavior on POSIX platforms. Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2022f.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2022f.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2022f.tar.lz The following convenience links are also available, although they may point to the previous release until the relevant caches are refreshed: 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 d3dc2a9d65ce433555c994ce2cf84901b87d9357 dated 2022-10-28 18:04:57 -0700 and tagged '2022f' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 3e2ef91b972f1872e3e8da9eae9d1c4638bfdb32600f164484edd7147be45a116db80443cd5ae61b5c34f8b841e4362f4beefd957633f6cc9b7def543ed6752b tzcode2022f.tar.gz 72d05d05be999075cdf57b896c0f4238b1b862d4d0ed92cc611736592a4ada14d47bd7f0fc8be39e7938a7f5940a903c8af41e87859482bcfab787d889d429f6 tzdata2022f.tar.gz 1dd9f8fc3e9fa113a72010b9bceb04c7540b1175801fbd15b591a6bca9400503c6683a4c89f83e08d77f5b78624a005113a8fc428c552a2a4a2b8d26de110141 tzdb-2022f.tar.lz Here are the GPG digital signatures for the release files: -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmNcfQQACgkQ7ZfpDmKq fjS19A//fGB4YH/GygGQkql4tlshrg7ykQIQCc3qDgBrj09JVeUfM/tAN5unx+lU jBK/V5BK4K9bkrNCmxmhEdoCfdyKqusPLJSrI+ZwqqPXzNOt46dkzUxbRNYH2pvy SZklxSpgJPa4h83I8C3afGOVJn6DYpnv8SKOV6jdOOk8C6aXMaDA6t16BxN1i1Ja UKN9EQtC7xjtvtq7LtLcwo9GMy4pWoyb+CbDayG2wBq4ym3VFLxRbKupVFIDa0I7 +1pzM3Ldg2dwDKvLH8GRzirsisXbfESNVI3v1DmGnm0xDrK5pOT3iPe95OyqvMvL NdjQCpbYpoaUuo8nCf5clU4nzGEDb1sEkI6Mb8tGl2ZgG5gdC5a4P2i20vNmyIt/ uSquD7xmcBZ0CggijpFx0ndZ+0y7XSJNf7mCPaxc7vHCj5jAgQv8HLE6UXChCLeq OazZOW7xEYTDyWQ9xt2HIY1RMVBeaEE5n9V3xyfBQpb/jYeIFm83nEP5X+KjlG0Z 0YGYrVieiwS1lzNTh+LXcXusMwe6B6wYt1G4pVUgasoFADUemfd9y0yzvpdkz6/2 +WvIAF4KbGwdVHteKFR+wq9UyaSFhTUL1f9f+DsYnSbApO4F7KFzDZ3tA9IVLxfy WuOZkqjAtldzkQhoTiygF2cyGwgzWeT1WwNF6oowYYvisDf1o2E= =JtyS -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmNcfQUACgkQ7ZfpDmKq fjRcIBAAhzux6C0XSQtma/RyLPGu18XmXNrFOATZ+pGxZVYEMQCbIwzS5K9yN1eD NqmcyRwI+57Kn4WHIaPcAXepcWq20yv9W30CNAZLmI6bgDlY2x2Hy+N+/TZfGWbQ FKa0gDKh/KMV5efOsgRQDm4RnM81yoJT7CV6abnaAnvUGtOzBlnsnCD5CbEUPA2s RsM/DnHISjofgfRuEyJk1oce/lji4VOaKnoR1u5omUHhOsowAZZs9AVS3dJcYdSc 58QPrwFoZjDtW5SpXV8lufgJBFEaWpDBzgvqwKyZz4SuRmezZLWedhu06iCLNedB ORkL9N5UJj2IXUD46uJGSaFgRyqtAElEzqWjgPsa2HjrTFoDlUfu2+I7HTzE+9ZN JldGwJz3P0ZGYUXldiCsV0dIgVsukcXE+8y2t3XSreTrgY+BQkipCaFz/y9vgMN+ ueudjvcTyTx9K6SCWeZ9UHLGhIPMsTgifmrTi/4Z2O8HHPROtYAF1aAMqKO0qMZ+ YEJnwsyHWDxty+3eB6NXRuvZjAIK3nTf1KUOy5zh4h0oG1/NG19eCNtzLLC3Zpt8 KLXrDPqWU2KRs3ts6l1kYTgiebb0w5iUBksMgTxwcslqYFHQfX++lov0PZOv1Mtl D46ODcN9NAHxsu+MmX9PtAotMVCyyJhhv6sFHnbqzEiA+faHVXw= =E16s -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmNcfQYACgkQ7ZfpDmKq fjT9mA/8CUb7Mz5G+ih1x9HkhqMFE4W8m9C0yQfDL4s3c50HcLIUfjyue0UUejW5 t6Ahs+nkFWXd9l2d0Twp/tRuSMJSuiNkcxcL12zAFD2PmP1gjmvObup56jNlOSut RzuCjhDCcNablZUCFnPJ7RtZ3CDfB4wQlp86QsELFhRyhOEIpp+dtPbJ6rRQctMt 8E3Bdk5CvmMrtosTWMRJRDP6e3ox1Dx1idUSFwTedHaxwpFw7edVyuS6rV5i7i3G hX+9osS1fxV7uLJ7dEd78Hlg55ygn2l5iaxyl7bEWnBpRjGjeuYzir34Y7ddWoKh 2feE4z1aG8zIzXJMCnojqiyFO4Thsm1naWKwBLzIx0L3y09NOtRAL/9HYbO4f0Zi /owClbYLQSjzqaVLxFfSscFt9iIwonmQsynG3/aJuNAHQVEXhAWg5dlaEqG0pCLo mKsvg8aeu5sC68bokEZbsGzcPnmQYFTnhU9ZXYvEIrCbBUuszv7FdlSsB6Jwwhqn dadNZF5mToxUSp6YfmwTY/STvf6WJOxMuU2bxF4Bi79xptY8mO2tEre/wamwId95 Vk0aNyFD8z9PJu8Sfk5cPijJXLcGI6MEXoZlJ9Ou9l/Ybio9Ns4YH7tjHf8O10Uu 9QM3XMKKyAG2G49mYbU1lJDmcM1VGtGmS/CibmL/d1eZdNFTBqw= =Eezp -----END PGP SIGNATURE-----

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checklinks.awk validation too strict
by Stephen Colebourne Oct. 29, 2022

Oct. 29, 2022

Hi, The latest version of checklinks.awk includes the following check: if (backcheck && FILENAME != backcheck && $3 != "GMT") { printf "%s: Link should be in '%s'\n", $3, backcheck status = 1 } The effect of the check is to insist that all Links are in the backward file. I understand this makes sense for TZDB's default dataset, as it now contains no Links in the main set of data files. In my opinion however it is perfectly valid to have a Link in the main set of files. This has been long-standing practice for TZDB. We know that some downstream consumers edit the source files before compiling them, so it seems highly likely that someone will still be wanting to have a Link in one of the main files. (And no, I don't think a command line option to turn it off is the right solution. If the check needs retaining there should be a "strict" mode only used by the default TZDB dataset) In summary, I think that this check should be removed since it is complaining about perfectly valid input files. thanks Stephen

2 1

Country heading for Morocco missing
by Stephen Colebourne Oct. 29, 2022

Oct. 29, 2022

I've noticed that the comment that acts as a heading for Morocco in the `africa` file is now missing. It is around line 591. I believe it was erroneously deleted. thanks Stephen

2 1

2022f and zonetab entries for Mexico
by Chris Walton Oct. 29, 2022

Oct. 29, 2022

According to 2022f, *America/Chihuahua* and *America/Ojinaga* switched from Mountain Time to Central Time. The descriptions in zone.tab and zone1970.tab still show "Mountain Time". -chris

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[PROPOSED] Don’t assume nonempty argv
by Paul Eggert Oct. 29, 2022

Oct. 29, 2022

Don’t dump core if argv[0] is NULL, which is allowed on GNU/Linux if the invoker is sufficiently perverse. * zdump.c (progname): Now char const *, so that it can be given the address of a string constant. (tzalloc): Use optarg, not progname, since progname’s type is no longer correct. * zdump.c, zic.c (main): Initialize progname to non-null. --- zdump.c | 6 +++--- zic.c | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/zdump.c b/zdump.c index 512ba8cc..f0461ade 100644 --- a/zdump.c +++ b/zdump.c @@ -84,7 +84,7 @@ static time_t const absolute_max_time = ? (((time_t) 1 << atime_shift) - 1 + ((time_t) 1 << atime_shift)) : -1); static int longest; -static char * progname; +static char const *progname; static bool warned; static bool errout; @@ -234,7 +234,7 @@ tzalloc(char const *val) exit(EXIT_FAILURE); } tzset(); - return &progname; /* Any valid non-null char ** will do. */ + return &optarg; /* Any valid non-null char ** will do. */ # else enum { TZeqlen = 3 }; static char const TZeq[TZeqlen] = "TZ="; @@ -463,7 +463,7 @@ main(int argc, char *argv[]) # endif /* defined TEXTDOMAINDIR */ textdomain(TZ_DOMAIN); #endif /* HAVE_GETTEXT */ - progname = argv[0]; + progname = argv[0] ? argv[0] : "zdump"; for (i = 1; i < argc; ++i) if (strcmp(argv[i], "--version") == 0) { printf("zdump %s%s\n", PKGVERSION, TZVERSION); diff --git a/zic.c b/zic.c index 501718f4..f3b32ecc 100644 --- a/zic.c +++ b/zic.c @@ -943,7 +943,7 @@ main(int argc, char **argv) textdomain(TZ_DOMAIN); #endif /* HAVE_GETTEXT */ main_argv = argv; - progname = argv[0]; + progname = argv[0] ? argv[0] : "zic"; if (TYPE_BIT(zic_t) < 64) { fprintf(stderr, "%s: %s\n", progname, _("wild compilation-time specification of zic_t")); -- 2.37.2

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[PROPOSED] Most of Mexico will no longer observe DST
by Paul Eggert Oct. 28, 2022

Oct. 28, 2022

Also, Chihuahua moves to year-round -06. * NEWS: Mention this. * northamerica (Mexico): No DST after 2022. (America/Ojinaga, America/Chihuahua): Switch from -07 to -06 on 2022-10-30 02:00. --- NEWS | 9 +++++++++ northamerica | 20 ++++++++++++++++---- 2 files changed, 25 insertions(+), 4 deletions(-) diff --git a/NEWS b/NEWS index 331c1d2..5689811 100644 --- a/NEWS +++ b/NEWS @@ -3,6 +3,8 @@ News for the tz database Unreleased, experimental changes Briefly: + Mexico will no longer observe DST except near the US border. + Chihuahua moves to year-round -06 on 2022-10-30. Fiji no longer observes DST. Move links to 'backward'. In vanguard form, GMT is now a Zone and Etc/GMT a link. @@ -16,6 +18,13 @@ Unreleased, experimental changes Changes to future timestamps. + Mexico will no longer observe DST after 2022, except for areas + near the US border that continue to observe US DST rules. + On 2022-10-30 at 02:00 the Mexican state of Chihuahua moves + from -07 (-06 with DST) to year-round -06, thus not changing + its clocks that day. The new law states that Chihuahua + near the US border no longer observes US DST. + Fiji will not observe DST in 2022/3. (Thanks to Shalvin Narayan.) For now, assume DST is suspended indefinitely. diff --git a/northamerica b/northamerica index 1f16a1c..df19543 100644 --- a/northamerica +++ b/northamerica @@ -2553,6 +2553,12 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 # 5- The islands, reefs and keys shall take their timezone from the # longitude they are located at. +# From Paul Eggert (2022-10-28): +# The new Mexican law was published today: +# https://www.dof.gob.mx/nota_detalle.php?codigo=5670045&fecha=28/10/2022 +# This abolishes DST except where US DST rules are observed, +# and in addition changes all of Chihuahua to -06 with no DST. + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Mexico 1931 only - May 1 23:00 1:00 D Rule Mexico 1931 only - Oct 1 0:00 0 S @@ -2568,8 +2574,8 @@ Rule Mexico 1996 2000 - Apr Sun>=1 2:00 1:00 D Rule Mexico 1996 2000 - Oct lastSun 2:00 0 S Rule Mexico 2001 only - May Sun>=1 2:00 1:00 D Rule Mexico 2001 only - Sep lastSun 2:00 0 S -Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D -Rule Mexico 2002 max - Oct lastSun 2:00 0 S +Rule Mexico 2002 2022 - Apr Sun>=1 2:00 1:00 D +Rule Mexico 2002 2022 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] # Quintana Roo; represented by Cancún Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 6:00u @@ -2622,7 +2628,8 @@ Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 7:00u -6:00 Mexico C%sT 1998 -6:00 - CST 1998 Apr Sun>=1 3:00 -7:00 Mexico M%sT 2010 - -7:00 US M%sT + -7:00 US M%sT 2022 Oct 30 2:00 + -6:00 - CST # Chihuahua (away from US border) Zone America/Chihuahua -7:04:20 - LMT 1922 Jan 1 7:00u -7:00 - MST 1927 Jun 10 23:00 @@ -2631,7 +2638,8 @@ Zone America/Chihuahua -7:04:20 - LMT 1922 Jan 1 7:00u -6:00 - CST 1996 -6:00 Mexico C%sT 1998 -6:00 - CST 1998 Apr Sun>=1 3:00 - -7:00 Mexico M%sT + -7:00 Mexico M%sT 2022 Oct 30 2:00 + -6:00 - CST # Sonora Zone America/Hermosillo -7:23:52 - LMT 1922 Jan 1 7:00u -7:00 - MST 1927 Jun 10 23:00 @@ -2729,6 +2737,10 @@ Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 7:00u # http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010 # It has been moved to the 'backward' file. # +# From Paul Eggert (2022-10-28): +# Today's new law states that the entire state of Baja California +# follows US DST rules, which agrees with simplifications noted above. +# # # Revillagigedo Is # no information -- 2.37.3

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Daylight Savings Time in Fiji Islands
by Shalvin Narayan Oct. 28, 2022

Oct. 28, 2022

Hi Contributors, Please note that there will not be any daylight savings time change in Fiji for 2022-2023. As per current tzdata, the time is scheduled to be changed on 13 November and moved back on 15 January. However, as per the government announcement, it will not be the case and they have canceled the DST change. You can find the announcement on: https://www.facebook.com/FijianGovernment/posts/pfbid0mmWVTYmTibn66ybpFda75… Requesting if the updated tzdata package can be provided so the patch can be implemented in the system and reflected in global time and data systems. zdump -v Pacific/Fiji | grep 2022 zdump: warning: zone "Pacific/Fiji" abbreviation "+12" lacks alphabetic at start Pacific/Fiji Sat Jan 15 13:59:59 2022 UTC = Sun Jan 16 02:59:59 2022 +13 isdst=1 gmtoff=46800 Pacific/Fiji Sat Jan 15 14:00:00 2022 UTC = Sun Jan 16 02:00:00 2022 +12 isdst=0 gmtoff=43200 Pacific/Fiji Sat Nov 12 13:59:59 2022 UTC = Sun Nov 13 01:59:59 2022 +12 isdst=0 gmtoff=43200 Pacific/Fiji Sat Nov 12 14:00:00 2022 UTC = Sun Nov 13 03:00:00 2022 +13 isdst=1 gmtoff=46800 zdump -v Pacific/Fiji | grep 2023 zdump: warning: zone "Pacific/Fiji" abbreviation "+12" lacks alphabetic at start Pacific/Fiji Sat Jan 14 13:59:59 2023 UTC = Sun Jan 15 02:59:59 2023 +13 isdst=1 gmtoff=46800 Pacific/Fiji Sat Jan 14 14:00:00 2023 UTC = Sun Jan 15 02:00:00 2023 +12 isdst=0 gmtoff=43200 Pacific/Fiji Sat Nov 11 13:59:59 2023 UTC = Sun Nov 12 01:59:59 2023 +12 isdst=0 gmtoff=43200 Pacific/Fiji Sat Nov 11 14:00:00 2023 UTC = Sun Nov 12 03:00:00 2023 +13 isdst=1 gmtoff=46800 timedatectl status Local time: Wed 2022-10-26 16:19:46 +12 Universal time: Wed 2022-10-26 04:19:46 UTC RTC time: Wed 2022-10-26 04:19:47 Time zone: Pacific/Fiji (+12, +1200) NTP enabled: yes NTP synchronized: yes RTC in local TZ: no DST active: no Last DST change: DST ended at Sun 2022-01-16 02:59:59 +13 Sun 2022-01-16 02:00:00 +12 Next DST change: DST begins (the clock jumps one hour forward) at Sun 2022-11-13 01:59:59 +12 Sun 2022-11-13 03:00:00 +13 Thanks Shalvin Narayan Head of ICT Telecom Fiji Limited [cidimage002.png(a)01D70F67.132FB220] P: (679) 321 0247 M: (679) 991 3793 This email (including any attachments) is confidential and intended solely for the use of the recipient it is addressed to. It may also be subject to legal or other professional privileges. Information contained in this email should not be copied or forwarded without the consent of the sender. If you have received this transmission in error, please notify the sender immediately and destroy and/or delete all hard and soft data relating to this transmission. Confidentiality or privilege is not waived or lost because this email has been sent to you by mistake. Telecom Fiji Limited has active anti-virus measures on its email systems but does not accept any liability in connection with any computer virus, data corruption, delay, interruption, unauthorized access, or unauthorized amendment. Any views expressed in this email are those of the individual sender, except where expressly stated to be a representation by Telecom Fiji Limited

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Wrong day light savings (DST) in Syria
by MAHMAOD RADWAN Oct. 28, 2022

Oct. 28, 2022

Dear iana organization Right now in Syria government made a decision to cancel day light saving (DST) in Syria but for some reason smartphones (android and ios) devices reserve a change to it clock so the clock in the all smartphones are now late for an hour so I hope to fix this mistake and reasove the issue Note i live right now in Syria and my clock is late for an hour

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