December 2018 - tz - lists.iana.org

proposed time zone package changes (Samoa, Factory, et al.)
by Arthur David Olson 28 Aug '19

28 Aug '19

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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Hong Kong Time history
by P Chan 31 May '19

31 May '19

*According to the Hong Kong Daylight-Saving Regulations, 1941, the 1941 spring-forward transition was at 03:00. http://sunzi.lib.hku.hk/hkgro/view/g1941/304271.pdf http://sunzi.lib.hku.hk/hkgro/view/g1941/305516.pdf *According to some articles from South China Morning Post, +08 was resumed on 1945-11-18 at 02:00. https://i.imgur.com/M2IsZ3c.png https://i.imgur.com/iOPqrVo.png https://i.imgur.com/fffcGDs.png *Some newspapers published on said the 1946 spring-forward transition was on 04-21 at 00:00. The Kung Sheung Evening News 1946-04-20 (Chinese) https://i.imgur.com/ZSzent0.png https://mmis.hkpl.gov.hk///c/portal/cover?c=QF757YsWv5%2FH7zGe%2FKF%2BFLYsu… p.4 The Kung Sheung Daily News 1946-04-21 (Chinese) https://i.imgur.com/7ecmRlcm.png https://mmis.hkpl.gov.hk///c/portal/cover?c=QF757YsWv5%2BQBGt1%2BwUj5qG2Gqt… p.4 *According to the Summer Time Ordinance (1946), the fallback transitions between 1946 and 1952 were at 03:30 Standard Time (+08) http://oelawhk.lib.hku.hk/archive/files/bb74b06a74d5294620a15de560ab33c6.pdf *Some other laws and regulations related to DST from 1953 to 1979 Summer Time Ordinance 1953 https://i.imgur.com/IOlJMav.jpg Summer Time (Amendment) Ordinance 1965 https://i.imgur.com/8rofeLa.jpg Interpretation and General Clauses Ordinance (1966) https://i.imgur.com/joy3msj.jpg Emergency (Summer Time) Regulation 1973 https://i.imgur.com/OpRWrKz.jpg Interpretation and General Clauses (Amendment) Ordinance 1977 https://i.imgur.com/RaNqnc4.jpg Resolution of the Legislative Council passed on 9 May 1979 https://www.legco.gov.hk/yr78-79/english/lc_sitg/hansard/h790509.pdf#page=39 P Chan

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Big tech warns of 'Japan's millennium bug' ahead of Akihito's abdication
by Martin Burnicki 30 Apr '19

30 Apr '19

Don't know if this has already been known, or if it's really relevant for this list, but ... "Big tech warns of 'Japan's millennium bug' ahead of Akihito's abdication" https://www.theguardian.com/technology/2018/jul/25/big-tech-warns-japan-mil… Martin -- Martin Burnicki Senior Software Engineer MEINBERG Funkuhren GmbH & Co. KG Email: martin.burnicki(a)meinberg.de Phone: +49 5281 9309-414 Linkedin: https://www.linkedin.com/in/martinburnicki/ Lange Wand 9, 31812 Bad Pyrmont, Germany Amtsgericht Hannover 17HRA 100322 Geschäftsführer/Managing Directors: Günter Meinberg, Werner Meinberg, Andre Hartmann, Heiko Gerstung Websites: https://www.meinberg.de https://www.meinbergglobal.com Training: https://www.meinberg.academy

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Brazilian state of Goiás may abolish DST
by World Time Zone 26 Apr '19

26 Apr '19

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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Metlakatla
by TechOps 22 Jan '19

22 Jan '19

Hello. The Metlakatla community in Alaska has decided not to change its clock back an hour starting on November 4th, 2018 (day before yesterday). They will be gmtoff=-28800 year-round. I'm told this is the list to send this information to. Any assistance or advice on getting this updated in the database is appreciated. https://www.facebook.com/141055983004923/photos/pb.141055983004923.-2207520… [image: MIC time change.jpg] - Ryan _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ AKTechOps <http://serrc.org/techops> | techops(a)serrc.org | *(907) 523-7290* *| Brian 523-7248 | Michaela 523-7258 | Nate 523-7275 | Nick 523-7291 | Ryan 523-7272 | SERRC 586-6806 |*

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Notice Lead Time Tracking
by Brian Inglis 13 Jan '19

13 Jan '19

Given some recent last minute end of year announcements, could I please suggest creating a new document to formally track metadata about every time change notice's lead time from 2019, as a basis for stats, info, distributor/vendor additions and enhancements, walls of shame, etc. as this has never yet been suggested AFAIR. I could see vendors like Apple, Google, Microsoft, Oracle dev groups adding columns to local copies to track their own responses, and using those to prod government officials to do better. The document could be a text file containing an HTML document with a table tracking: CC, announcement date[/time], effective date[/time], lead time in years-months-days [hours:minutes:seconds], tzdb release date[/time], tzdb release lead time +/- in years-months-days [hours:minutes:seconds], whether change affects STD, whether change affects DST, number of zones impacted, list of zones impacted, comments about missing details etc.; with dates[/times] in ISO formats (and perhaps also Unix format metadata attributes, allowing for JS HTML text display customization and sorting by third party users); times only specified when useful or notice is days, and times are available and accurate. If anyone has been doing this already, perhaps they could contribute their data; and anyone with interest and time could backfill data from mailing list posts. -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised.

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[tz-announce] 2018i release of tz code and data available
by Paul Eggert 04 Jan '19

04 Jan '19

The 2018i release of the tz code and data is available. It reflects the following change, which was circulated on the tz mailing list: Briefly: São Tomé and Príncipe switches from +01 to +00 on 2019-01-01. Changes to future timestamps Due to a change in government, São Tomé and Príncipe switches back from +01 to +00 on 2019-01-01 at 02:00. (Thanks to Vadim Nasardinov and Michael Deckers.) Here are links to the release files: https://www.iana.org/time-zones/repository/releases/tzcode2018i.tar.gz https://www.iana.org/time-zones/repository/releases/tzdata2018i.tar.gz https://www.iana.org/time-zones/repository/releases/tzdb-2018i.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 388b0a55116099360a99cc9973d75ae6ec63d939 dated 2018-12-30 11:05:43 -0800 and tagged '2018i' in the development GitHub repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 1a3d53043f20b8252f7598f547d78e7294d9e0cf1fcdd2159354d9769f824c8c8a03cef9cbb7fa579345fdb41372335117d2ef782ecd9c107dd0526e59492d9d tzcode2018i.tar.gz 6afcacb377842190648ed26f01abcf3db37aa2e7c63d8c509c29b4bc0078b7ff2d4e5375291b9f53498215b9e2f04936bc6145e2f651ae0be6d8166d8d336f6a tzdata2018i.tar.gz 1bdab8ce6a2fc17e9b9d88baa7423b44254811255c82ccce0031725cd316b0ac14a696451f98c72559186270de54e8f467afdb788b2b501427f72fb4ea49d145 tzdb-2018i.tar.lz Here are the GPG checksums for the release files::n -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAlwpGB4ACgkQ7ZfpDmKq fjTyAw/9EA6VzQop7iRV9GA3UQa6w4Rm/P6gJwF3gkz7hlAf39A6Tueulzzwk6F8 K2oIJQ/MlVGNw5yzkGHR2NTY1W3yhSJTKR5X4k2E5f/7vGnTf3USJx2Fs2Itolyn UoGSIRHWesr3tmbNUCT4LImfNyeW2MrW4q8yw1ZS7uZ34TMxDmJ+DTbomSPVhiMu yn3Y9KEqId6z3SsV8yjcDDd4J8B0zuh2WWrhSkPLXjCtGfHdiT9YaTo8y8Ayinwr xzofREicLEj1YX+3Hx0ErUCiWbtEzByOlkSX7CXfABI6EcaNaJzUsiHvrw7TTFoy u1rrJgarkrNj7YXX8Dj4PoAp4cIH4++AwNbZKfZp5PNRlzydKYX0APpuYUwmS5Qv yXqcvsOGHau/wkDb6ZPQwUwu5g7BmZQ42Yvp8tisoeGeCNnm3zu5cKyCMy2LRKyy dELRyxKEpOSOzjYqIl06yPGtQf4xgXh4r/zKCSS1bEBEpzTIV4BvoxB1R9x26hc1 IJwcuYEeU9NAq17Njcs5jyts4SnNfryxX8+RvwtJnxnmoTc1whaMHR8CMka11XI2 bJ1FlJCQr5dBA5M5cstLJZVkreoMp1bNLiVwCL+8cdAHWGXQ6SPUDuQYyUj+wKBp EX6dfVjrX/CYQVe65HnXiqxYJpDamGk2J4suSc4SG6EF8TVtQCw= =eLXg -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIyBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAlwpGB8ACgkQ7ZfpDmKq fjTMog/3YJT5eFuwlijuTDxlt+VMTaAEaDaSUfzmQhaTDuHPKVDXxCaWq+tcO4J8 gzzecRj40Xc/jZId7MREq2S3uyUu7D6tJR7kRMw8BeTYVkhf+wX4Xmfh+6bVB9bO 34GNTSK9BXoieio68AkaCziVhBy6KynKhzUS4d1sqEDUxhS7r3ir6jTiU4UGAf54 PKWh2YKYITuYww4XnseG9rQsKbVKK4GUm/e7OmV3zf5pI9lhf/TQh1XZXKFbKK70 gDmFPUDAyuiFBCxkA7YsGolAnkscVmuF301brsNg+VKPy1qgMbxY/vF0lo/f7xRw dzi8+ek6/pKCIUmVRWCsg68wUDh1j3pAh9MLT8zhMtxOc42Kh+4b1BNq0x45zVbQ 693ufcf056654Y27bCexy1JbGBNEd6UUGUv/Ou9EGrl6nfrfMSmUneqmBEnl8NY+ 6/cge/JOr+rVbmEku+nuC9kLZx63lSy4BXJ8+vv4DgzE6/3906V30+w/oJUGaImx PjE9tjm6biIWdRi6bZRdFcg0mktBEyzJuAuurX0ZRgcaNkrhNd4zw2Q3yuKDcD67 aM5wUA4JVLX5v6P+s5j5Y+B+OY4sVk8fFzev8BJX+wRulqEmchVertypir17PUSr oqRUAww6oaYwenZNE+6dN0OWtpLDdBUv7+pesiYcaJRrXDCLAA== =ttI4 -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAlwpGCEACgkQ7ZfpDmKq fjRrfA//ZeU5yiKc9WOW9kco9zXoBvlHgqpxO3qI3ESgUxslFAIpeVA/26JRbEc8 AJaEEEfmKFNFtO0Wev8WAhRT6qayaxlR30qWlhQl73F+F4xVmTuCojf02HlzUS5B QpReCDZecEMXp3SmEHrog3gMtGtT6dbofUbFjXoJtwm8OpjXzlY1LdAwO33eiOKH SKr7r7q4dm/3ZVhdFP2b/OPqiF/ezhywAoYqxIUdglroGyCGtlHECEDyYIHAHlwT /hwRk96a3/ghQiEyVbqREzwBMWydTbeo+MptCtgpA1p1vmVLxLhY/3SUaOdEBIqC mYhDuLMy9SKIVtkLBc537RnUBWyCfX3p9XZ90q2YqcpqzxX47+55IKmZ8MeWEvgU OvPUV6kYVtWCO/7bNVz4I0XaJdK/tA1vhNyk8jXaMW4duCgZZsCDn5uD3oQCKJE4 O+QZqf7k5pGWT3NWFln4vv6/mahAeoV0OxpHpn1qdA6+CAa/DVdU5ZTcaleNsTSy lAd0Zt2UBCb/rycnckgT87RrAtvjUUVq4onHSaTmtOdBYfMLr5BKtD+UClAcudvd jb15tHpErlXpZ/02Bn1yfynd5xFndGA1Rj3xIRCV31/EY+pxYl4i8ZNc9lWvtLa8 PV9bGewU6EsFohzm5/1CnJbT/gKYoFVoYkdQ7/Bc+mtNjYIAYxM= =ehq4 -----END PGP SIGNATURE----- PS. If your tzdata parser does not yet support negative DST offsets, this particular release's data entries are also available in a rearguard-format tarball and signature that does not contain such offsets. This is intended to be a temporary transition aid for these parsers. The URLs are: https://web.cs.ucla.edu/~eggert/tz/release/2018i/tzdata2018i-rearguard.tar.… https://web.cs.ucla.edu/~eggert/tz/release/2018i/tzdata2018i-rearguard.tar.… with the following SHA-512 and GPG checksums: 55ec0bc2504eddc72187c80c24c80ac7a2ec4c9e5b5a4cee583dcd2f97a648b35674e1eb2e390151e689f9d4eb237615d2f0f3c64b2209672e762f0bc4c580e2 tzdata2018i-rearguard.tar.gz -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAlwpGB8ACgkQ7ZfpDmKq fjT/yw/9HUQnV+LGYkiQRE840qJ02XqH5K0l2R7n9OiUKsZnI+PEg5y23bUGd4+A gWwNAvC7629m+La8yiIRMO9fdNX3qHCHAXn7eUBH9nfJLcPML4t5i8kFT+NYvXwT JuauEAHDRqVQw6s0Sjeh3wsz/4Iq0c6AOuPqYC5Nnh8OgXZUsG8sNlJfB6x2Hbfe 85UimkXX+xSizN6gMxrP4Y5adoQaJRcCkvjZLm4TwGvMOTFQLNsERtl9KeiJOD3Z qEnt03Wx+kpOK2nIepe+ZgS2TtgK1uRntiu+L7MmRPmNriegCE+SCQVZhl5Kbm4a HHORTs/97B9ec6tiNreL0lg35Z/0vKA4KUdcpBGCaylGNvXNmz4TnHWHpdOWgueD 3O8E87edCTAUvQ8rAoEcqmg6CPrr2p/gfn+96w1EBfBqVJCjsZ/6KaDhbb6/LBAr oHd3TVtHMxpxrkxGXCyZwwpHEQtdnKeWPAyyc5kKd9LqUM1YQLQhQ44aN0SBeO8n spAFJLQm03GA+1aw1ETVrid474PMLTGKQj4iOg0XY/91E/L5p+Pf15ztMBo8asie lo07vW+o0ED3N0p60EXIdZxnokm/hPLo9yqbrCGpXE6wHcSFOgiK/Q5wOahrA/y0 LVI5yJt9Bc+hHLcQnwIPQei2P50ixVVDq8k2hTiM+2PN3iIcoGY= =fOhE -----END PGP SIGNATURE----- _______________________________________________ tz-announce mailing list tz-announce(a)iana.org https://mm.icann.org/mailman/listinfo/tz-announce

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Timezone change for Asia/Qyzylorda
by Zhanbolat Raimbekov 03 Jan '19

03 Jan '19

Hi, Starting 21 December 2018 00:00, Qyzylorda oblast, Kazakhstan (Asia/Qyzylorda) has moved back from +6 to +5. Link: http://adilet.zan.kz/rus/docs/P1800000817 -- Zhanbolat Raimbekov, Rochester Institute of Technology '12

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[PROPOSED] Cite Shanks & Pottenger better
by Paul Eggert 30 Dec '18

30 Dec '18

* tz-link.html: Provide library URLs for Shanks and Pottenger’s now out-of-print atlases, since their publisher no longer maintains web pages. Link to ANS on these atlases as sources for much of the older tz data. Use <abbr> a bit more often. --- tz-link.html | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/tz-link.html b/tz-link.html index 4f456ef..924227a 100644 --- a/tz-link.html +++ b/tz-link.html @@ -551,8 +551,8 @@ Java</a> contains a copy of a subset of a recent Java-specific format.</li> <li><a href="https://relativedata.com/page/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> +download, compile and use <code><abbr>tz</abbr></code> releases. +The Basic version is free.</li> <li><a href="http://veladg.com/velaterra.html">VelaTerra</a> is a macOS program. Its developers @@ -563,10 +563,16 @@ licenses</a> to <code><abbr>tz</abbr></code> contributors.</li> <ul> <li><a href="https://www.astro.com/atlas">Time-zone Atlas</a> is Astrodienst's Web version of Shanks and Pottenger's out-of-print -time zone history atlases now published in <a +time zone history atlases +<a href="https://www.worldcat.org/oclc/468828649">for the US</a> and +<a href="https://www.worldcat.org/oclc/76950459">for the world</a>, +now published in <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 +Although these extensive atlases +<a href="https://astrologynewsservice.com/opinion/how-astrologers-contributed-to-the…">were +sources for much of the older <code><abbr>tz</abbr></code> data</a>, +they are 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> <li><a href="https://en.wikipedia.org/wiki/HP-UX">HP-UX</a> has a database in @@ -856,14 +862,14 @@ href="https://www.iers.org/IERS/EN/Publications/Bulletins/bulletins.html"><abbr title="International Earth Rotation and Reference Systems Service">IERS</abbr> Bulletins</a> contains official publications of the International Earth Rotation and Reference Systems Service, which decides when leap -seconds occur. The <code>tz</code> code and data support leap seconds +seconds occur. The <code><abbr>tz</abbr></code> code and data support leap seconds via an optional "<code>right</code>" configuration, as opposed to the default "<code>posix</code>" configuration.</li> <li><a href="https://developers.google.com/time/smear">Leap Smear</a> discusses how to gradually adjust <abbr>POSIX</abbr> clocks near a leap second so that they disagree with <abbr>UTC</abbr> by at most a half second, even though every <abbr>POSIX</abbr> minute has exactly -sixty seconds. This approach works with the default <code>tz</code> +sixty seconds. This approach works with the default <code><abbr>tz</abbr></code> "<code>posix</code>" configuration, is <a href="http://bk1.ntp.org/ntp-stable/README.leapsmear">supported</a> by the <abbr>NTP</abbr> reference implementation, and is used by major -- 2.17.1

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São Tomé and Príncipe tz change (Jan 1, 2019)
by Vadim Nasardinov 30 Dec '18

30 Dec '18

São Tomé and Príncipe is about to do the following on Jan 1, 2019: http://www.stp-press.st/2018/12/05/governo-jesus-ja-decidiu-repor-hora-lega… “O Conselho de Ministros, relativamente a hora legal de São Tomé e Príncipe, decidiu que a partir de 1 de Janeiro de 2019 será reposta a nossa hora secular” I don't read Portuguese but this sounds like a change. Old news? I don't see any discussion of this in https://mm.icann.org/pipermail/tz/2018-December/thread.html

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