March 2023 - tz - lists.iana.org

Lebanon to go back to DST midnight Wednesday March 29th
by Jad Baz 27 Mar '23

27 Mar '23

Lebanon to go back to DST midnight Wednesday March 29th https://twitter.com/ALJADEEDNEWS/status/1640313313790681088?t=G_VQcAnq10PSY… https://twitter.com/LBCI_NEWS/status/1640312096972742656?s=19

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Lebanon DST change internally disputed
by Jad Baz 26 Mar '23

26 Mar '23

Lebanon is going through many internal disputes surrounding the latest decision to delay DST Many institutions are refusing to comply with the change and are going to adopt regular DST on Sunday Mar 26th Those institutions include but are not limited to: - News agencies - Religious organizations - Schools, universities, etc... The refusal is mainly centered the legality of that decision and, obviously, the technical chaos it will create because of its short notice Moreover, as some of the below articles mention, this is also causing sectarian strife All of these concerns are important to bring to light in view of IANA's procedures for updating timezone data: If you would ask today "what the average person on the street would think the time actually is", it's not at all clear what the answer would be Below are some links about these latest developments: https://www.cnn.com/2023/03/25/middleeast/lebanon-daylight-savings-intl/ind… https://www.lbcgroup.tv/news/lebanon-news/693963/lbci-refuses-to-comply-wit… https://www.lbcgroup.tv/news/news-bulletin-reports/693989/lebanese-patriarc… http://www.mtv.com.lb/en/news/local/1352862/bkerke--we-are-committed-to-swi… http://www.mtv.com.lb/en/news/live_feed/1352804/mtv-will-not-comply-with-th… https://today.lorientlejour.com/article/1332635/postponement-of-daylight-sa…

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Time Zone Iran
by Patrick.Stergonschegg＠orf.at 26 Mar '23

26 Mar '23

Hello, I just noticed that the Windows time zone for "UTC +03:30 Tehran" is probably being computed incorrectly. It seems that DST +1 is being added, although Iranian Government announced that they will not switch to DST anymore, beginning in 2023. Official IR News Agency announcement: http://irna.ir/xjJ3TT Current Time: https://time.ir I assume that Microsoft imports IANA time zone data: http://bit.ly/3ZmGzTE In the file tzdata2023b\asia on line 1625 it says: 3:30 Iran +0330/+0430 I assume the line should be changed and a new line should be added, e.g.: 3:30 Iran +0330/+0430 2022 3:30 - +0330 More ressources: http://bit.ly/3lQC9qp https://www.timeanddate.com/worldclock/iran I am looking forward to any feedback. Thanks a lot, Patrick

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Lebanon DST change update - central bank to use two timezones
by Jad Baz 25 Mar '23

25 Mar '23

Lebanon's central bank said it would only adopt government decision (of postponing DST) for work shifts and schedules but would stick to regular DST time in its systems and transactions https://www.mtv.com.lb/news/%D9%85%D9%80%D9%80%D8%AD%D9%80%D9%80%D9%84%D9%8… https://twitter.com/BeirutCityGuide/status/1639653667694428161?s=20

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[tz-announce] 2023b release of tz code and data available
by Paul Eggert via tz-announce 24 Mar '23

24 Mar '23

The 2023b release of the tz code and data is available. It follows so closely on the 2023a release because Lebanon's government announced that Lebanon's spring-forward transition previously scheduled for the end of this week has been delayed until April 20. This release contains the following change: Briefly: Lebanon delays the start of DST this year. Changes to future timestamps This year Lebanon springs forward April 20/21 not March 25/26. (Thanks to Saadallah Itani.) Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2023b.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2023b.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2023b.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 71faa2a55db2c9f21f4099b58c28536673982e0a dated 2023-03-23 19:50:38 -0700 and tagged '2023b' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 94058ceabfdaa62eeff9be804a030f0eb95b4099b62fbb7e55557e8b934c8d883f488a3a6996331e24aebd147d66c19a73fb925a3dd929c630a9e11b51003b7f tzcode2023b.tar.gz 0f697b872ef02109d2098db12d0effc834b2ac5438921e0867f2c70987f305a47dc3eac720c344bb3757c902a7653109621e943564bdfbf00937077c311aa29b tzdata2023b.tar.gz 286ab1bf768dda48d4066d2477de0f3db9c26e55e26c1a4f33b450268255f28d57360bffe602a3bc29f8a281b7e0ff17880fe1d14914d6361f62abb7526e5081 tzdb-2023b.tar.lz Here are GPG digital signatures for the release files: -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmQdELYACgkQ7ZfpDmKq fjQpIQ//eOaHIqWDFcotP/ntWHses+E1PaalrArGe6uoGJYR3Aql9GBIM/BrhBZH oiCeRxxsLLoU4ZoJdrEh3Q4q4a3g/j5NGL3oi1ktlwHz1dnJFd2UQ+XlK2mv2/Lb o+cwaM0RV8SZojClxXF/ditXgsJ+EGbSX7WYKX7XfCxdWwFw+ZZPPcYvmXvenFCl wtJWjgo11a3V7OpKk4kfX/EuoNoHTF7uOIr943Id96JFM0z7LET1zaoKzObMs0+l Afyi1Rl0bxO6rlPH+HRJb41cac1YXMcoRkz0rzvaZalEA4FYFYIsA4nbuVB1DGIW xzQLErGgBg9NFLSIQJmocS7V3T3KpSeIXAfUMN3XMUMVfOwv9Fm0ZdzgPEH3/Xhr h/6C1a18Q+xeicqaB7Hm+nybH51sFxajx9xoGcr+Ij+1ze1W4Rk7LnHC6+tsqQ/D N+P1fBEcb33C3/T8G2s+OWNMRInotcqAnZYUqLkFTmNbWEC1xdWdUZGxY+0PxDSX c7UGAgj7E9G4JS684AkcpVgIJUwz0XyQIZkJHudg7FyEjW7U7qIycXUwC+RCVtWb tnJX9TxzP01/kD3R3C8CALByCJW4OTlpwcETqACjUF6JBpAHHbFWGY1znBs/zsDa PSMozhoQ3moWHRBsW3PU7XBsxOf6kDMrqUxWTo1oKVv0Jy5xfO0= =UybO -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmQdELYACgkQ7ZfpDmKq fjQJpg//cdQED6jsk1BnqHOCL1/PPUxJsl1SmDlcAoO4o7Odt5AlTFq6P6zGzRze F+P1P6k9mD09IyiQC3m3wQaROoyAoaErPeuzwmoDT/rBVNRraSE0t8xy2jDytkne CH3f1TMYYqQOWpQnDxzMKByypkNCG9o0ryzhTMWRI9BNnLZqwRnyRFWPdLYM5O7/ DxFk3YbtoB9IoO2LR32dqYxrrKKb6cjr7exTGI+0WQNwQEK0HV/62bImDmparUei 8BZKc9fk41xNYJJxdew81pSAmRK6TMHPOG5cvs8KPLIb/lKfG21wJXL0wDr0U4wy L15riEQlkRckzG2IIV2OB5F+5MY7NWNHubuJ0YEBDJkPMQKfBPSkZM1xkvosiend 8BBgHPBH4HiZ9z/ZvrRXyIjOOpYuko9wyiqtRpqSp4OimB2RMV6VG8oSD+OG3YCj VhF2+KlZwLj9mG9sOeslDuBnp4h4eyCvVoILQNE0qYjeHGY4WTkqP/l29ZI2+rQW cfcOk8atl4ojmekmsLcoz3EnJLtDIgtLtchHTIKsDQgZnVNASnvpaZXU3l8T6fZf 0PitHf90Qj2WWkuiMkNBbS0q4D/CknH7pqy1TY8/IWQRrvPp9deLDEMs+TcSleOk 1HZ1bxgCL1lgqQGiqC66Ybyy794bG6g3CclFkSHGGB8UcC1hkg8= =o96Z -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmQdELgACgkQ7ZfpDmKq fjRyIhAAiuZfMpkCkyrVZycCouQsPeYtUPSeJpbaUHktBWZYxZ7JwCvLEFx9RC1+ Pz3Siiwes7Q0R0yuFCOr11oDfS9br22WOuvSYdaNacdxp8Xas8s5vKwj5ObJcu+a sYyrKMBlEf4nPiwZTXNaX5OW+kNJEFS9A+TS2vJ0Us3JzWrcfucBVnSwDqIkXWO5 99JXfqENH5OtxX5hbrGLCJ6g0A48tFgHWCXWIQ3NyCZQQzylLjQubXZHkcn9VVhP R1eesSskihJrNpUAaTS8eneZeJ9sdT7iulk+cgCI+uTMl+QOFtiEBxtF7Osj1faq xgguz7qIP2h47EIZDsBpKvyyOxL5MDsrGvbu/1zi6QzbBjIXR7UQ1s9OzZy+Zh+r Nxav3vYHXHpayFn7i6/BTEjLak4Jdr526DwyM9OAxiq9Bx4d6LAk3H14OHFKa6i8 6Nbp+4SjhuD+ycjyyU49SIdCYvakXgHHYHSnngXQzp9LO01cG4tHfnFadYN+l6Va iu+HqPBQqbieuKqqtC9Zvx0xSFxUQLnraVTERkaUFPNRPhxiezMStPCCAbAhceAc cXsfbhcrQrvd46L9Lm89+ywkNsrVw9e/j3yWsHTAxhqpyda6v/XRUV9LgqwSUego MKQT5q/XB7Zn7stC6Fj/XHzh4Ty4yLJ65SWjreXV1+C+fqijVA8= =BTwz -----END PGP SIGNATURE-----

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Lebanon DST last minute postponed, IANA not informed!
by Jad Baz 23 Mar '23

23 Mar '23

Dear timezone coordinators, My name is Jad Baz, I am a software engineer from Lebanon I just wanted to bring to your attention an issue concerning Lebanon's last minute cancellation of DST this Sunday (March 26th 2023) Lebanon, as part of the EEST timezone, is supposed to enter in DST this Sunday However, this was postponed due to Ramadan It was announced today (Thu March 23rd) by several news outlets that the Secretary General of the Council of Ministers decided to change postpone DST from this Sunday March 26th to April 21st Below, you will find a few links to news articles in English from trusted Lebanese news agencies: - https://www.lbcgroup.tv/news/lebanon-news/693669/lebanon-postpones-daylight… - https://www.mtv.com.lb/news/local/1352516/lebanon-postpones-daylight-saving… I checked the latest IANA updates from March 22nd and did not find mention of this latest development I think this decision was taken haphazardly without much regard for how this change will be propagated (as are most decisions in Lebanon, sadly...) I know my question is coming quite last minute But I'm wondering what needs to be done to save the situation as this is causing a lot of chaos (eg airlines) I looked at the procedures doc and initially thought that there must be some formal communication that needs to go out from government employees but it seems that "what the average person on street would think the time actually is" is enough So my questions are: - Are the above articles enough to make this change? Or is there any other data you need that I can help with? - Do you expect this might be amended by Sunday? If not, what's a more realistic estimate of a schedule? Thank you very much, Jad Baz

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DST Change in Lebanon
by Rany Hany 23 Mar '23

23 Mar '23

Hello, Lebanon has extended daylight savings time until April 20 2023 (exceptionally this year). It's so that people fasting this ramadan stop their fasting at 5PM instead of 6PM. Sources: - https://twitter.com/grandserail/status/1638874765954785280 - https://twitter.com/timourazhari/status/1638877448447115266 Best

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Fwd: [tz-announce] 2023a release of tz code and data available
by Saadallah Itani 23 Mar '23

23 Mar '23

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Asia/Bangkok
by Chris Walton 22 Mar '23

22 Mar '23

Paul, Sorry for the timing of this message; I know you are in the middle of trying to push out 2023a. At some point in the last few months the description of Asia/Bangkok in zone1970.tab changed from "Indochina (most areas)" to "north Vietnam". Is this really what you intended? -chris

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[tz-announce] 2023a release of tz code and data available
by Paul Eggert via tz-announce 22 Mar '23

22 Mar '23

The 2023a release of the tz code and data is available. This release contains the following changes: Briefly: Egypt now uses DST again, from April through October. This year Morocco springs forward April 23, not April 30. Palestine delays the start of DST this year. Much of Greenland still uses DST from 2024 on. America/Yellowknife now links to America/Edmonton. tzselect can now use current time to help infer timezone. The code now defaults to C99 or later. Fix use of C23 attributes. Changes to future timestamps Starting in 2023, Egypt will observe DST from April's last Friday through October's last Thursday. (Thanks to Ahmad ElDardiry.) Assume the transition times are 00:00 and 24:00, respectively. In 2023 Morocco's spring-forward transition after Ramadan will occur April 23, not April 30. (Thanks to Milamber.) Adjust predictions for future years accordingly. This affects predictions for 2023, 2031, 2038, and later years. This year Palestine will delay its spring forward from March 25 to April 29 due to Ramadan. (Thanks to Heba Hamad.) Make guesses for future Ramadans too. Much of Greenland, represented by America/Nuuk, will continue to observe DST using European Union rules. When combined with Greenland's decision not to change the clocks in fall 2023, America/Nuuk therefore changes from -03/-02 to -02/-01 effective 2023-10-29 at 01:00 UTC. (Thanks to Thomas M. Steenholdt.) This change from 2022g doesn't affect timestamps until 2024-03-30, and doesn't affect tm_isdst until 2023-03-25. Changes to past timestamps America/Yellowknife has changed from a Zone to a backward compatibility Link, as it no longer differs from America/Edmonton since 1970. (Thanks to Almaz Mingaleev.) This affects some pre-1948 timestamps. The old data are now in 'backzone'. Changes to past time zone abbreviations When observing Moscow time, Europe/Kirov and Europe/Volgograd now use the abbreviations MSK/MSD instead of numeric abbreviations, for consistency with other timezones observing Moscow time. Changes to code You can now tell tzselect local time, to simplify later choices. Select the 'time' option in its first prompt. You can now compile with -DTZNAME_MAXIMUM=N to limit time zone abbreviations to N bytes (default 255). The reference runtime library now rejects POSIX-style TZ strings that contain longer abbreviations, treating them as UTC. Previously the limit was platform dependent and abbreviations were silently truncated to 16 bytes even when the limit was greater than 16. The code by default is now designed for C99 or later. To build in a C89 environment, compile with -DPORT_TO_C89. To support C89 callers of the tzcode library, compile with -DSUPPORT_C89. The two new macros are transitional aids planned to be removed in a future version, when C99 or later will be required. The code now builds again on pre-C99 platforms, if you compile with -DPORT_TO_C89. This fixes a bug introduced in 2022f. On C23-compatible platforms tzcode no longer uses syntax like 'static [[noreturn]] void usage(void);'. Instead, it uses '[[noreturn]] static void usage(void);' as strict C23 requires. (Problem reported by Houge Langley.) The code's functions now constrain their arguments with the C 'restrict' keyword consistently with their documentation. This may allow future optimizations. zdump again builds standalone with ckdadd and without setenv, fixing a bug introduced in 2022g. (Problem reported by panic.) leapseconds.awk can now process a leap seconds file that never expires; this might be useful if leap seconds are discontinued. Changes to commentary tz-link.html has a new section "Coordinating with governments and distributors". (Thanks to Neil Fuller for some of the text.) To improve tzselect diagnostics, zone1970.tab's comments column is now limited to countries that have multiple timezones. Note that leap seconds are planned to be discontinued by 2035. Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2023a.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2023a.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2023a.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 f24b84a13556c12441dd55c323f9a8fd3b6fbbee dated 2023-03-22 12:39:33 -0700 and tagged '2023a' in the development GitHub repository at <https://github.com/eggert/tz>. 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