- tz - lists.iana.org

Re: [tz] Palestine winter time
by Paul Eggert Oct. 22, 2021

Oct. 22, 2021

On 10/21/21 01:03, heba.hamad(a)mtit.gov.ps wrote: > Could you please confirm that Palestine winter time has been adopted in IANA time zone database Yes, tzdb release 2021e was published today with the updated Palestine winter time. The announcement is archived here: https://mm.icann.org/pipermail/tz-announce/2021-October/000069.html

2 2

[tz-announce] 2021e release of tz code and data available
by Paul Eggert via tz-announce Oct. 22, 2021

Oct. 22, 2021

The 2021e release of the tz code and data is available. This release reflects the following changes: Changes to future timestamps Palestine will fall back 10-29 (not 10-30) at 01:00. (Thanks to P Chan and Heba Hemad.) Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2021e.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2021e.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2021e.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 b102002e5300d94c369796d5b70bae22b5af720d dated 2021-10-21 18:41:00 -0700 and tagged '2021e' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 87b0335129ea41c5f42f687f548712e5da892baa8494cecf5d34851beceecf6ae52f22104696ed187713cf9e502570eb2041e277dfd3c043c11d0253bfde685a tzcode2021e.tar.gz c1e8d04e049157ed5d4af0868855bbd75517e3d7e1db9c41d5283ff260109de46b6fac6be94828201d093e163d868044ac2a9db2bf0aeab800e264d0c73a9119 tzdata2021e.tar.gz 8abd662f07a91eed5b77d03eaa3e9ef59ce08b4e3fc14f9857095c3d4f2039e8ac216fc985b0cf87a823eacad064197c8ecb76ba531a9fc700014d7f0057aba8 tzdb-2021e.tar.lz Here are the GPG digital signatures for the release files: -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmFyF3cACgkQ7ZfpDmKq fjQKRw//c5HpFCN0vcPUIC/OQKTF/SXFOANCpHWypc/vgTVXFAsVu0zIKWdBuXXI 0zQDpbTcTJ2FfI5Z1JGNzeKa2G4Wy71lwwPu2mGDt0WCCAqh/l15XvgVEAM96YLG WZRK+WLKIVWgZ67NA2xWAt9VLgtA643Cgym1DCpsr9jTDAhGSYq8D0XC5OQHtfw2 oyzv4InTW+0EI14FQcQ3VqImLwGSefeYPfMBRjrAspqrTLez78vW914IWNKcgEoC pKCkq9+14u0L+G5j5E+f27gbRtZ4hZnIn5uNgItomJmGObW6khn0Huf+G6U1BAal 2zLSAYMubr1kq/6dP62QUivi1W2S3YRZDh20YsKxn214HW5qK5LdQKYruBGKOFou 7oAe91W3UW0vSJuboXj0Dbdc3p8Oay97eJ/kRDVKJZ95/UOQtwrkQi2wCbm19eC8 kvHdejbIrOvdl+ZpvkHIggQGSOchyXUASeqnX/9zirOAX0N05insC/ybJLAwepFm FqpvcfwjrJKCotAjFEEex1uIT5kgQwIumvtxLef3bGQgYtF1yfWMD0NSJAR1iAU2 BzXuikOLPNbHWpC41ODgRxBVaQnMpliC0WGJ/HiVT78ukEkx0MpcxyfnxjEDD7fz F3GlJlj/bw5rvsPrFzbSjYyzXfrn0u1y8/vgehUmtSj1K7MmB6I= =CliF -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmFyF3cACgkQ7ZfpDmKq fjSLPw/9EDTMMp0ySiPkYgXICy+hYq78xDOpF5IU34tcvmL2j3OZiM49X//CQzNF 7kLoEkYenpjJZ9QU8V0w+26UJF3js/R3a9gLU3ybPZ7+o+NOanQK68z5EvggWGfm 0yVCGbPhsKNoP/2Xtpv3gLiT6WoBvJF6k16mRQtiE7ngLJ3OUpaWaQAZ73F+sMTY I5F++cAdTvOTHw6M4ORmvp8OMg2df1KVXf2MINQZkx3OVxw+y6zaMwcKUJHz81eY KCDO6DJyoj48/WNDxfIiYVk2YoOVm9I3HiqgmrojmniJFLCq/PkWGqU61gmNCSRv 5vLjb9qnfWQG8E3E44pdH8aqZt7z7kYdcL89y5UnDBlJMmoh/cPigjfBmAot7Erw 5Mj8pp/a7tcvHKIoGZscIzjRnffYDHTD6rNwStVvTfKyGE7O6Fa63yUnndCudqdu 6nZCQNkELrn9ber4ieJR6d46LOVFvqlMhCzhknZRUBkbtU4ltwBze8RvrGGhdyJ3 s9YQtGpY1uEcNF4JWzqkE9sXtPnevFERUT1hZdQpJ2NM0mrVKAfdLhryvJyi+t30 fbMbyqmYRhPuyk7OUPbduTIXc4IIpSzAaeQRFwZqDGSOuOj+8JSk6EX9Kwel7ahp 2PIzzyffxL7m2kG9+iAKckRHz0nyvoYGHQl1gsah9qUVx2Q/JIo= =kEHz -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmFyF3cACgkQ7ZfpDmKq fjSLPw/9EDTMMp0ySiPkYgXICy+hYq78xDOpF5IU34tcvmL2j3OZiM49X//CQzNF 7kLoEkYenpjJZ9QU8V0w+26UJF3js/R3a9gLU3ybPZ7+o+NOanQK68z5EvggWGfm 0yVCGbPhsKNoP/2Xtpv3gLiT6WoBvJF6k16mRQtiE7ngLJ3OUpaWaQAZ73F+sMTY I5F++cAdTvOTHw6M4ORmvp8OMg2df1KVXf2MINQZkx3OVxw+y6zaMwcKUJHz81eY KCDO6DJyoj48/WNDxfIiYVk2YoOVm9I3HiqgmrojmniJFLCq/PkWGqU61gmNCSRv 5vLjb9qnfWQG8E3E44pdH8aqZt7z7kYdcL89y5UnDBlJMmoh/cPigjfBmAot7Erw 5Mj8pp/a7tcvHKIoGZscIzjRnffYDHTD6rNwStVvTfKyGE7O6Fa63yUnndCudqdu 6nZCQNkELrn9ber4ieJR6d46LOVFvqlMhCzhknZRUBkbtU4ltwBze8RvrGGhdyJ3 s9YQtGpY1uEcNF4JWzqkE9sXtPnevFERUT1hZdQpJ2NM0mrVKAfdLhryvJyi+t30 fbMbyqmYRhPuyk7OUPbduTIXc4IIpSzAaeQRFwZqDGSOuOj+8JSk6EX9Kwel7ahp 2PIzzyffxL7m2kG9+iAKckRHz0nyvoYGHQl1gsah9qUVx2Q/JIo= =kEHz -----END PGP SIGNATURE----- PS. If your tzdata parser does not yet support negative DST offsets or times past 24:00, or if it insists on a 'pacificnew' file that is no longer present, this release's data entries can be turned into a rearguard-format tarball that should work even with these older parsers. This is intended to be a temporary transition aid for these parsers. To generate a rearguard-format tarball, obtain the full distribution as described above, and run the command 'make rearguard_tarballs' on a development host. Or you can run 'make rearguard.zi' to generate a single file that can be fed directly to a parser that works like 'zic'.

1 0

Re: [tz] Palestine winter time
by Paul Eggert Oct. 21, 2021

Oct. 21, 2021

On 10/20/21 01:47, heba.hamad(a)mtit.gov.ps wrote: > winter time will begin in Palestine from Friday 10-29 ,01:00 AM by 60 minutes backwards. Thank you for letting us know. Attached is a proposed change to tzdb, installed into its development version <https://github.com/eggert/tz>. We plan to have a new tzdb release soon. This change implements this year's transition, and also guesses that winter time will begin on October's last Friday at 01:00 in 2022 and later years, to be consistent with 2021. If this guess is wrong, please let us know as far in advance as possible, because rule changes trickle out only slowly to cell phones and computers.

2 1

The origin of time zone regions
by Arthur David Olson Oct. 21, 2021

Oct. 21, 2021

A middling-length story with a small point. In the seventies and eighties, I helped develop two-dimensional PAGE* image analysis software. Black and white images had a thousand or so spots; the positions of the spots and their size provided information on the characteristics and abundances of proteins in samples. Step one was to get the positions and sizes of spots in a single image. Step two was to compare two images, pairing up the spots. Some spots would only appear in one image and have no pairs; in other cases, two (or more) spots would appear in one image where only one appeared in the other; one spot would be paired with multiple spots. The final step was to consider groups of images. For this purpose, there were groups of spots where (to quote an article on the matter) “each spot in a group is paired with some other spot in the group and no spot in any group is paired with any spot in any other group.” In the mid-eighties, work started on the time zone database. And time zone regions ended up being defined as being places where all the clocks agreed. The small point: the nature of time zone regions has less to do with chronometry or geopolitics than it does with gel analysis. @dashdashado _ * https://www.sciencedirect.com/topics/neuroscience/two-dimensional-gel-elect…

1 0

Re: [tz] Pre-1970 data
by Stijn “Adhemar” Vandamme Oct. 20, 2021

Oct. 20, 2021

The “should timezones be merged when they contain identical offsets from 1970 onwards” discussion has been going on for quite a while on the tz mailing list. Still, contributions that I find insightful are still being made. Stephen Colebourne recently made this observation: > The key observation is that the segregation between these two groups > > of IDs *did not exist* until around 2014. It was only in 2018 that the > > ISO country rule was removed. > This change was reflected in the documentation <theory.html> as recently as 20/21 February 2019 < https://github.com/eggert/tz/commit/5f48dee82bc111b21f3610893e3b788e37396bce > < https://github.com/eggert/tz/commit/6176aefe79e83ddb8f255849b85c149f34d46aba > And Stephen made this spot-on point of analysis: > FWIW, it is clear to me that there is an aspect of imposing a > > US-centric timezone system on other parts of the world. The recent > > tzdb approach of focussing entirely on timezone regions makes perfect > > sense for the US, where region boundaries do not follow state lines, > > and ordinary members of the public need to be aware of whether they > > are in US/Mountain or US/Central. This simply isn't the timezone model > > in many other parts of the world. In places like Europe and Asia, the > > timezone is driven primarily by the country you live in - an ordinary > > member of the public in Iceland is never going to associate with some > > abstract timezone region stretching down the Atlantic that is not > > named, not legally defined and is little more than a random outcome > > based on tzdb's choice of 1970. Even in somewhere like Norway, an > > ordinary member of the public will understand that although they > > follow CET, their timezone is actually driven by their Government in > > Oslo. The brilliance of the original rule - "ID as needed for > > post-1970 data, with at least one per ISO country" - was that it > > seamlessly handled *both* models of timezone in one unified set of > > IDs. Removal of the ISO country part has completely destabilised that > > balance. > If I may throw in my two-penny, it would pertain to the documentation of this policy. Presently, <theory.html> does mention - that timezones are zones whose clocks all agree about timestamps that occur after the 1970 POSIX Epoch; - that 1970 is indeed a somewhat-arbitrary cutoff, but that moving it earlier even by a decade or two would impose significant challenges, due to the wide variety of local practices before computer timekeeping became prevalent; - that pre-1970 clock transitions are recorded for location-based timezones, but that the database is not designed for and does not suffice for applications requiring accurate handling of all past times everywhere; - that the previous “at-least-one-timezone-per-country-with-officially-designated-ISO-3166-1-two-letter-country-code” rule is dropped for this imposed too high a maintenance burden; and - that some information outside the scope of the database (implied: pre-1970) is collected in a file backzone that is distributed along with the database proper, but that this file is less reliable and does not necessarily follow database guidelines. What astonishes me in this issue is that high-quality information is being removed from the database proper into backzone, without this being mentioned in the documentation <theory.html>. Granted, <theory.html> does not explicitly state an “at-least-attempt-to-get-monotonically-closer-to-the-truth-with-increasing-versions” policy, but one would think that’s implied in maintaining a (versioned) database, unless explicitly stated otherwise. The other way around (moving information from backzone to the database proper, e.g. when historical information is double-checked and confirmed to be in accordance with database guidelines) is totally acceptable without mentioning in the documentation <theory.html>. Indeed, even though I know that correcting pre-1970 data is not the priority of this project, I’ve seen some great sluthing of historical time zone offsets presented on the tz mailing list in the past, and I kinda assumed that the results of such research found its way to the database proper (or backzone when doubts remained). In my opinion, removing high-quality information — thereby having correct offsets changed into incorrect offsets in information systems that rely on the tz database and keep it up-to-date on the default settings (which disregard backzone) — should cease, and should preferably be undone where such damage has already occured. Seeing how much problems pursuing “fairness” under the new rules causes, perhaps it’s worth reinstating the previous “at-least-one-timezone-per-country-with-officially-designated-ISO-3166-1-two-letter-country-code” rule, either officially or unofficially. (And for what it’s worth, this comes from someone who generally tries to avoid relying on country lists such as ISO 3166-1, due to strong political belief in the desirability of independence or at least increased self-governance for several countries/regions currently lacking an officially-designated ISO 3166-1 two-letter country code, including Flanders, Wallonia, Scotland, Catalonia, Basque Country, Canary Islands, Tibet, and others.) But alternatively, if this project persists in its “removing-high-quality-information and merging-for-merging’s-sake” policy, then at the very least this should be mentioned clearly, unambiguously and conspicuously highlighted (bold, bigger font size, bright but fully saturated background colour, following an animated warning icon, the lot) in the documentation <theory.html>: PREVIOUSLY OR CURRENTLY CORRECT PRE-1970 OFFSET INFORMATION IS > INTENTIONALLY BEING CHANGED AND/OR MAY INTENTIONALLY BE CHANGED IN LATER > VERSIONS OF THE tz DATABASE INTO INCORRECT OFFSET INFORMATION for the > braindead reason of merging timezones for merging’s sake. > USERS MUST NOT RELY ON UNDISPUTEDLY AND UNCONTESTEDLY CORRECT AND VERIFIED > OFFSET INFORMATION REMAINING CORRECT in the database proper, except for > timezones that have post-1970 particularities which prevent them from being > merged with foreign timezones. (And even then — who knows what the > coordinator-maintainer will come up with next…) > Information systems that rely on tz for offset information, including for > pre-1970 datetimes-with-timezone-identifier, ought to pass this warning on > to their users. > — Adhemar

1 0

Palestine winter time
by heba.hamad＠mtit.gov.ps Oct. 20, 2021

Oct. 20, 2021

Dear Sir, I’m Heba Hamad .I have been appointed as a focal point by the Ministry of telecommunication and information technology (state of Palestine) to communicate with you. We would like to inform you that winter time will begin in Palestine from Friday 10-29 ,01:00 AM by 60 minutes backwards. Kindly find the attachment below that includes the decision of the Palestinian cabinet. With Respects, Sent from Mail for Windows

4 4

Palestine winter time
by P Chan Oct. 18, 2021

Oct. 18, 2021

http://wafa.ps/Pages/Details/34701 https://www.facebook.com/wafagency/posts/4457787417632704 Palestine winter time will start from midnight 2021-10-29 (Thursday-Friday).

4 4

[tz-announce] 2021d release of tz code and data available
by Paul Eggert via tz-announce Oct. 15, 2021

Oct. 15, 2021

The 2021d release of the tz code and data is available. This release reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Briefly: Fiji suspends DST for the 2021/2022 season. 'zic -r' marks unspecified timestamps with "-00". Changes to future timestamps Fiji will suspend observance of DST for the 2021/2022 season. Assume for now that it will return next year. (Thanks to Jashneel Kumar and P Chan.) Changes to code 'zic -r' now uses "-00" time zone abbreviations for intervals with UT offsets that are unspecified due to -r truncation. This implements a change in draft Internet RFC 8536bis. Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2021d.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2021d.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2021d.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 4de3d7f2499328c97e652242a36fed9523741d12 dated 2021-10-15 13:48:18 -0700 and tagged '2021d' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: dbd7e3df02a11676600aa7efa14592feb2ac9ab5807b0d395e0c29ff1ed4a31580120287df9fe0c65a78162157dcd31d9fbe90a2a93bfd891d59ae3668a3adda tzcode2021d.tar.gz e25e85679256cfa57072cc8902aad1ca1df5ddc4a06844ca38bd57c8b5ad386e38303654dc85525f4fb470a924db4deb3576827a14d3ff87f4a1c679414b95c9 tzdata2021d.tar.gz 6ccb3ed6ebf35643cb49d503f18b7c66957de098f41870fd14ac37489b0931abd6d3e7bf5c2797e69f56f44b31ff9f9068ffa40f5aa29260ecda9d0aac878103 tzdb-2021d.tar.lz Here are the GPG digital signatures for the release files: -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmFp6ekACgkQ7ZfpDmKq fjQtmBAApD1Am4P0gbEECXOABxrnE258QrPRqPhupj45gW0kMD5BehW+yO2oIzOU zDmgLbWyG5CmbD2lSt2fq1mZKhfqYD2J4QJlwwiPGHriNKZZCVIQniXZVRFUzQz/ oObtIzNm5mgR6OUhWDcbzYZsa10eJ7HTMrDOGViZ7T1DyLj5yobSXqkC/Q/ZlEvM Vpnl9nDieey2GgXvobfpR+Bby6NB26Pojjab9Mbw9jyRtcvnf6GmdBn6v4aoDwKc ZUqcb9qjv7NXnN5o9nCUSK7/ad+RoVZJAVDe84Quj1Vn8ydfZ0/1+i6bF3mM6Bpi I3riuPKkv7AHW2iRgZPnnqH7U+X32gb55/+WleokkasZj7e8i1QjJW7L0b91YOHN USz1McquYNsh/n9IDph4Zw1tBpbmLYAy3HQPaR6OzO8fc9paw5nsoics/5fQ5WoZ 2T2EavJfa045XKxwzd57w9YthQgW27Ep6UMpVCEGjYCBfVt8MfmiB787apGJdeJj NeVaKfSfpE4PTWvrtfTXPCIVIbIhlA5UUXyhEBXrMJw/FVxf8rAHGi/zvmrgl48X iY/xMG4yWpUYwZqWG0NBeGE0tvj8Yj2NagWj/UnGXcte3MvgmjkFSnKhj+UZrcA+ 1ehgE8pGicWEl0xl7uW6uwJ1IgWBMHYIkxpslJdTru+nnfbBIaA= =Bvd6 -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmFp6ekACgkQ7ZfpDmKq fjTbSA/9HBEpib2dXzZg06u4WuVwFEbzu1AUblHm7I9PAzoxtTvJJqH0dMCrHDlj wldeHGclbBxLq8wF33Ajh7bvgISDhmjQCm/ux7nS0ctRnPkV4Pj2j6lsfk/gYVIB agFefLTTrdHaIrPxZ9TK7c63X+6HMfFDnE+nOrJXimls/gW/Xu/VeMDtngrCIoB3 JTSbPePbaSlA+NMn+RRhfb6jlw/Slbm7n5Zpf+VSZs2HN4+bNpHuFLbl5oMbPOrQ C+va/yKJXrNYroGOfIlz/ZnM24ZGDterLh9BBLe+zy3Ni+dhuH0x406C8zkZXSDu U1BZvHK3f84beSF0H1SbkGyjkfVSIol1o2p69mMdcyZzewng3n+MLB8lNxyMkmyk f8cTKviE0V+xoEe/yV8+0+uDhli+oLMudqNGy8eCRNgrnRkCsP513LMX73bagohQ xjtBd+cp2VSzhV4vXsJJE7mIwzofnZaGqdR/jyHND+4gx80TQo8Ftc29wRGbwCCI WU37r17EmcOPg+emOciIf8nYCPnIvKGBBZ0UcCEuvaZXXYhyg+2c82z7A+bIPZaS 6wQZhqptoWB07tJOMxcgCCV7I1fT8+GLlLLlJQXladooOa06mVzsFk8VlUX4PRl3 bIQGNgqRtoE/RnhbxgD0A4ToYUqdMvYzcoCGIGpg/4zmyFZWcaY= =NgZm -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmFp6esACgkQ7ZfpDmKq fjSsWg/+NCtwn4E06FCtkR08EV0R8uG4xI6HyQc8JsB5DiFkt+evge2Bu+De03y5 nUJ1eaWbg27MLMfdYI7q5tET9G5RRcFUSZx5Zpj+Bv++KHEz7QSB5ZajE2n2qi93 AkXtFEQn8n0sCKbxdpikiUtKyZbIhcBZkzpAVU3sDdphoLUJFI2YPUCwNL5sPnzH 9pI9/iXCvu1mDW0Mg+mdBO6BuMVmTZneSJ+qtWVRvDPBvWJu8vDr16YiNaTYXkX6 atnvTDmjc3RP5DAjFzItBjsZWcLfrWWQ9WezYXWGDmJS+ijxSH0eYAUfXdHESMMd ggNwlsYZumla1p8yGmHP7YkUynds2hZYV8ySCZhfaCjq/AYANs2hzYLIY5reQ6mJ XxRoGOECc2uCmIVwFjYAALghW0GnDAy6M/l+qgzSxAr92Y0GdlFSdv8yWvIBYPyg /gFKrS+IkLHPJEF5vcpxCpCJC2XR2lJLAzoAgLUc14kD5enmVUjJzia8CpKahq2S argJwtnUl+pZT5QLfOSC46jG2o+RnhSarPSNb21cs+eNnPMA31aXDIRrGDCJ6UXf nRAU1t7eq4bbb/cvEGgJ9ZCfoQpBhYT4QO8as4JXnzkHrB7PuUiqw2sOXixF6H46 MSKRQq/uWI6XiAbXpUDFh67EeH/U1YkR8mx67Uii6pcGLvK2ptM= =Brw7 -----END PGP SIGNATURE----- PS. If your tzdata parser does not yet support negative DST offsets or times past 24:00, or if it insists on a 'pacificnew' file that is no longer present, this release's data entries can be turned into a rearguard-format tarball that should work even with these older parsers. This is intended to be a temporary transition aid for these parsers. To generate a rearguard-format tarball, obtain the full distribution as described above, and run the command 'make rearguard_tarballs' on a development host. Or you can run 'make rearguard.zi' to generate a single file that can be fed directly to a parser that works like 'zic'.

1 0

[PROPOSED 1/3] Document that -00 means local time is unspecified
by Paul Eggert Oct. 15, 2021

Oct. 15, 2021

* tzfile.5, zic.8: Document longstanding practice in time zone abbreviations. This better matches draft RFC 8536bis. --- tzfile.5 | 4 +++- zic.8 | 3 +++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/tzfile.5 b/tzfile.5 index 74564cb..e2f11b4 100644 --- a/tzfile.5 +++ b/tzfile.5 @@ -118,7 +118,9 @@ and serves as an index into the array of time zone abbreviation bytes that follow the .B ttinfo -structure(s) in the file. +entries in the file; if the designated string is "\*-00", the +.B ttinfo +entry is a placeholder indicating that local time is unspecified. The .B tt_utoff value is never equal to \-2**31, to let 32-bit clients negate it without diff --git a/zic.8 b/zic.8 index 3727922..89fc827 100644 --- a/zic.8 +++ b/zic.8 @@ -559,6 +559,9 @@ alphanumeric ASCII characters, .q "+" and .q "\*-". +By convention, the time zone abbreviation +.q "\*-00" +is a placeholder that means local time is unspecified. .TP .B UNTIL The time at which the UT offset or the rule(s) change for a location. -- 2.30.2

1 2

Kiev >> Kyiv
by Pavlo Komendant Oct. 12, 2021

Oct. 12, 2021

Hello, Could you please amend the Ukraine capital in the time zone? Kyiv is the correct spelling of the Ukraine capital https://en.wikipedia.org/wiki/Kyiv Thank you! -- Pavlo

3 2