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tzdata2016c
by Patsy Franklin March 21, 2016

March 21, 2016

Hi Paul, Any ETA for this update? Thanks! Patsy

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efele.net/tz maps updated for TZ 2016b
by Eric Muller March 21, 2016

March 21, 2016

I have updated the efele.net/tz maps (http://efele.net/maps/tz) to TZ 2016b. Eric

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Chile goes back to DST (...)
by Juan Correa March 18, 2016

March 18, 2016

Today the Chilean Ministry of Energy announced that they will go back to a DST scheme this year. That means clocks will go back 1 hour at 0:00 May 15th (jumping back to May 14th); and will go forward by 1 hour on 0:00, August 14th. This was decided after a public outcry during winter, when the sunrise for Santiago went as late as 8:45 AM Some media outlets carrying the news (in Spanish): - http://www.soychile.cl/Santiago/Sociedad/2016/03/13/380779/Vuelve-el- horario-de-invierno-a-partir-de-la-segunda-semana-de-mayo.aspx - http://www.biobiochile.cl/2016/03/13/gobierno-retrocede-y-decreta-el- regreso-del-horario-de-invierno.shtml - http://www.t13.cl/noticia/nacional/chile-volvera-implementar-horario- invierno There is no official decree yet; or confirmation whether this decision will be only for 2016, or will be carried from now on (or until the next goverment :P) -- Juan Correa Poblete PS Labs (http://www.pslabs.cl)

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Discrepancies in European part of Russia (and nearby)
by Stepan Golosunov March 18, 2016

March 18, 2016

Hi, I compared Europe/Astrakhan, Europe/Ulyanovsk and https://ru.wikipedia.org/wiki/%D0%92%D1%80%D0%B5%D0%BC%D1%8F_%D0%B2_%D0%A0%… , noticed some discrepancies and decided to look a bit closer. 1. Europe/Astrakhan, 1961 transition. That one appears to be void and looks like an artifact of Stalingrad -> Volgograd renaming. 2. Europe/Samara, KUYT in 1991. Europe/Samara currently has KUYT between 1991-09-29 and 1991-10-20. But the decree of the Presidium of the Supreme Council of the RSFSR about renaming Kuybyshev to Samara is dated 1991-01-25: http://pravo.gov.ru/proxy/ips/?docbody=&nd=102010448 I also wanted to check the date of the 1991-10-20 transition but did not found any sources. 3. Europe/Chisinau, 1990 transitions. While googling for Soviet era documents for Russian zones I found the act of the government of the Republic of Moldova Nr. 132 from 04.05.1990 http://lex.justice.md/index.php?action=view&view=doc&lang=2&id=298782 It says that since 1990-05-06 on the territory of the Moldavian SSR time would be calculated as the standard time of the second time belt plus one hour of the "summer" time. To implement that clocks would be adjusted one hour backwards at 1990-05-06 2:00. After that "summer" time would be cancelled last Sunday of September at 3:00 and reintroduced last Sunday of March at 2:00. I believe that means UTC+0400 -> UTC+0300 transition at 1990-05-06 02:00 and that UTC+0300 -> UTC+0200 transition on 1990-09-30 was expected, while current Europe/Chisinau says UTC+0300 -> UTC+0200 at 1990-05-06 00:00 and no transitions on 1990-03-25 and 1990-09-30. 4. Asia/Barnaul, 1995. Letter of Bank of Russia from 25.05.1995 http://www.bestpravo.ru/rossijskoje/lj-akty/y3a.htm suggests that Altai Republic transitioned to Moscow+3 on 1995-05-28. Currently Asia/Barnaul guesses it was on Moscow+3 since 1992-01-19. http://regnum.ru/news/society/1957270.html has some historical data for Altai Krai: before 1957: west part on UTC+6, east on UTC+7 after 1957: UTC+7 since 1995: UTC+6 http://barnaul.rusplt.ru/index/pochemu_altajskij_kraj_okazalsja_v_neprivych… confirms that and provides more details including 1995-05-28 transition date. 5. Tomsk, 2002. http://pravo.gov.ru/proxy/ips/?docbody=&nd=102075743 transitions Tomsk to the time of the fifth time belt at 2002-05-01 03:00. Tomsk currently is listed under Asia/Novosibirsk with transition to Moscow+3 on 1993-05-23. 6. Europe/Astrakhan, Europe/Volgograd, 1991-1992 UTC+0400. Wikipedia provides different guess for these dates but explicitly says it's a guess. Are there any sources? 7. 1988 and 1989 changes. Wikipedia and other sources refer to the Act of the Council of Ministers of the USSR from 04.01.1988 No. 5 and the Act of the Council of Ministers of the USSR from 14.03.1989 No. 227 I did not found full texts of these acts. For the 1989 one we have title at http://base.garant.ru/70754136/ : "About change in calculation of time on the territories of Lithuanian SSR, Latvian SSR and Estonian SSR, Astrakhan, Kaliningrad, Kirov, Kuybyshev, Ulyanovsk and Uralsk oblasts". And http://astrozet.net/files/Zones/DOC/RU/1980-925.txt appears to contain quotes from both acts: Since last Sunday of March 1988 rules of the second time belt are installed in Volgograd and Saratov oblasts. Since last Sunday of March 1989: a) Lithuanian SSR, Latvian SSR, Estonian SSR, Kaliningrad oblast: second time belt rules without extra hour (Moscow-1); b) Astrakhan, Kirov, Kuybyshev, Ulyanovsk oblasts: second time belt rules (Moscow time) c) Uralsk oblast: third time belt rules (Moscow+1). Currently Europe/Riga, Europe/Tallinn, Europe/Astrakhan, Europe/Samara, Europe/Ulyanovsk and Asia/Oral agree with the acts; Europe/Volgograd, Europe/Vilnius and Europe/Kaliningrad disagree. The 1989 act is mentioned in the comments for Latvia. 8. Europe/Kaliningrad, 1989-1992. Contemporary article reproduced at http://www.rgo.ru/ru/kaliningradskoe-oblastnoe-otdelenie/ob-otdelenii/publi… confirms that the 1989 change to Moscow-1 was implemented. (The article, though, is misattributed to 1990 while saying that summer->winter transition would be done on the 24 of September. But 1990-09-24 was Monday, while 1989-09-24 was Sunday as expected.) 2014 article at http://www.kaliningradka.ru/site_pc/cherez/index.php?ELEMENT_ID=40091 says that Kaliningrad switched to Moscow-1 on 1989-03-26, avoided at the last moment switch to Moscow-1 on 1991-03-31, switched to Moscow on 1991-11-03, switched to Moscow-1 on 1992-01-19. Europe/Kaliningrad currently disagrees with this between 1989-03-26 and 1991-11-03. 9. Europe/Vilnius, 1989. Lithuania most probably did switch to Moscow-1 on 1989-03-26 but this is not reflected in Europe/Vilnius. 10. Europe/Volgograd, 1988-1989. Volgograd and Saratov supposedly switched to Moscow time on 1998-03-27. Kirov supposedly switched on 1989-03-26. Europe/Volgograd currently says switch happend on 1989-03-26. 11. Regions-violators, 1981-1982. Wikipedia refers to http://maps.monetonos.ru/maps/raznoe/Old_Maps/Old_Maps/Articles/022/3_1981.… and http://besp.narod.ru/nauka_1981_3.htm . The second link provides two articles scanned from the Nauka i Zhizn magazine No. 3, 1981 and a scan of the short article attributed to the Trud newspaper from Feburary 1982. The first link provides the same Nauka i Zhizn articles converted to the text form (but misses time belt changes map). The second Nauka i Zhizn article says that in addition to introduction of summer time on 1981-04-01 there are some time belt border changes on 1981-10-01, mostly affecting Nenets Autonomous Okrug, Krasnoyarsk Krai, Yakutia, Magadan Oblast and Chukotka according to the provided map (colored one). In addition to that "time violators" (regions which were not using rules of the time belts in which they were located) would not be moving off the DST on 1981-10-01 to restore the decree time usage. (Komi ASSR was supposed to repeat that move in October 1982 to account for the 2 hour difference.) Map depicting "time violators" before 1981-10-01 is also provided. The article from Trud says that 1981-10-01 changes caused problems and some territories would be moved to pre-1981-10-01 time by not moving to summer time on 1982-04-01. Namely: Dagestan, Kabardino-Balkar, Kalmyk, Komi, Mari, Mordovian, North Ossetian, Tatar, Chechen-Ingush and Chuvash ASSR, Krasnodar and Stavropol krais, Arkhangelsk, Vladimir, Vologda, Voronezh, Gorky, Ivanovo, Kostroma, Lipetsk, Penza, Rostov, Ryazan, Tambov, Tyumen and Yaroslavl oblasts, Nenets and Evenk autonomous okrugs, Khatangsky district of Taymyr Autonomous Okrug. As a result Evenk Autonomous Okrug and Khatangsky district of Taymyr Autonomous Okrug would end up on Moscow+4, Tyumen Oblast on Moscow+2 and the rest on Moscow time. http://astrozet.net/files/Zones/DOC/RU/1980-925.txt attributes the 1982 changes to the Act of the Council of Ministers of the USSR No. 126 from 18.02.1982. 1980-925.txt also adds Udmurtia to the list of affected territories and lists Khatangsky district separately from Taymyr Autonomous Okurg. Probably erroneously. The affected territories are currently listed under Europe/Moscow, Asia/Yekaterinburg and Asia/Krasnoyarsk. 12. Udmurtia The fact that Udmurtia is depicted as a violator in the Nauka i Zhizn article hints at Izhevsk being on different time from Kuybyshev before 1981-10-01. Udmurtia is not mentioned in the 1989 act. http://astrozet.net/files/Zones/DOC/RU/1980-925.txt implies Udmurtia was on Moscow time after 1982-04-01. Wikipedia implies Udmurtia being on Moscow+1 until 1991.

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[tz-announce] 2016b release of tz code and data available
by Paul Eggert March 17, 2016

March 17, 2016

The 2016b 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. A last-minute note: some 2016b data entries cause zic implementations derived from tz releases 2005j through 2015e to issue warnings like "time zone abbreviation differs from POSIX standard (+03)". These warnings should not otherwise affect zic's output and can safely be ignored on today's platforms, as the warnings refer to a restriction in POSIX.1-1988 that was removed in POSIX.1-2001. One way to suppress the warnings is to upgrade to zic derived from tz releases 2015f and later. Changes affecting future time stamps New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and Ulyanovsk Oblasts, Russia, both of which will switch from +03 to +04 on 2016-03-27 at 02:00 local time. They need distinct zones since their post-1970 histories disagree. New zone Asia/Barnaul for Altai Krai and Altai Republic, Russia, which will switch from +06 to +07 on the same date and local time. Also, Asia/Sakhalin moves from +10 to +11 on 2016-03-27 at 02:00. (Thanks to Alexander Krivenyshev for the heads-up, and to Matt Johnson and Stepan Golosunov for followup.) As a trial of a new system that needs less information to be made up, the new zones use numeric time zone abbreviations like "+04" instead of invented abbreviations like "ASTT". Haiti will not observe DST in 2016. (Thanks to Jean Antoine via Steffen Thorsen.) Palestine's spring-forward transition on 2016-03-26 is at 01:00, not 00:00. (Thanks to Hannah Kreitem.) Guess future transitions will be March's last Saturday at 01:00, not March's last Friday at 24:00. Changes affecting past time stamps Europe/Chisinau observed DST during 1990, and switched from +04 to +03 at 1990-05-06 02:00, instead of switching from +03 to +02. (Thanks to Stepan Golosunov.) 1991 abbreviations in Europe/Samara should be SAMT/SAMST, not KUYT/KUYST. (Thanks to Stepan Golosunov.) Changes to code tzselect's diagnostics and checking, and checktab.awk's checking, have been improved. (Thanks to J William Piggott.) tzcode now builds under MinGW. (Thanks to Ian Abbott and Esben Haabendal.) tzselect now tests Julian-date TZ settings more accurately. (Thanks to J William Piggott.) Changes to commentary Comments in zone tables have been improved. (Thanks to J William Piggott.) tzselect again limits its menu comments so that menus fit on a 24x80 alphanumeric display. A new web page tz-how-to.html. (Thanks to Bill Seymour.) In the Theory file, the description of possible time zone abbreviations in tzdata has been cleaned up, as the old description was unclear and inconsistent. (Thanks to Alain Mouette for reporting the problem.) Here are links to the release files: ftp://ftp.iana.org/tz/releases/tzcode2016b.tar.gz ftp://ftp.iana.org/tz/releases/tzdata2016b.tar.gz The files are also available via HTTP as follows: http://www.iana.org/time-zones/repository/releases/tzcode2016b.tar.gz http://www.iana.org/time-zones/repository/releases/tzdata2016b.tar.gz As usual, links to the latest release files are here: http://www.iana.org/time-zones/repository/tzcode-latest.tar.gz http://www.iana.org/time-zones/repository/tzdata-latest.tar.gz ftp://ftp.iana.org/tz/tzcode-latest.tar.gz ftp://ftp.iana.org/tz/tzdata-latest.tar.gz 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 70161f48bc212678c58490f7faabc286c90b2a05 dated Sat Mar 12 17:30:14 2016 -0800 and tagged '2016b' in the experimental github repository at <https://github.com/eggert/tz>. Here are the SHA-512 checksums for the release files: 53f7405fd0466f5acc5d1dd590546abb6e3f4240d6a78ce7e965908d9310e8b8686c8fbe887947c513a4de65e3e3fc038d64215a330267397f37e6efce71f0b8 tzcode2016b.tar.gz 6d30215ba3289a5b85a632d635b76a54c3c08d97e426d6bd89f83c4efd252e43959593b21cca9d2b185f3845358908946cc308365accbee94f126ad3057cf838 tzdata2016b.tar.gz Here are the GPG checksums for the release files: -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJW5MM9AAoJEO2X6Q5iqn40ptQP/2aU2c7blSof/PppmYUs/+Vg X+96FtZyN2JeUSdn5MjhquLlIaib8fg/vqLQJrcrBtansAwXzhpQ8bfSxv4wxFGS kij7H+37ym/KKW8pLPQFLORaNqGYKIpbBYq+aXYLvIycUgmNVX9hTIbvhbFWp8Vb n1GxzZX+p/b6Iyi7j+yEUmI+cGkNoZsHpBIqpG3mZbVc63bzPCvzOujBq3zQ4IG8 Mho/UWoqEIrCeBllFkdqPQ3i63MdE87OdtF2jXDgcDdrw/rBpuT84fp4a2rPkvIM TJf6NjIzY5D9jehkUoC0pKO5iVVvRTGAExpYr9R+jsddo1mp37V29NKLXOfnEFXK rTfXvvVDddF57rXZhV9oo0mMBCjT+5+5ZTnx2d1s+4zhZ9lrlMm/PfNWwf6d7/q9 Q68pqYrcLgc07vKm7wiLnNxSUL8aK5QvN5iGIFR4Qwxv/2Jl7tdHc+yRWtleOazg VLdagXMCtLB01pLatuc08yrXqLVwysUyLxhwiQ4S9dURh82KHzwQnaHFRUsT8T8v 8Gu3IKkGSHZofVE3hkwLJTmP9q+QAWyd71ealTKbpnAVeGPpmSAxUfi8tk1xRolA VZ+axKVRap4kdYVZqfwXBCPR1ImCLGBYf5umEfokUwKeWxvek5ff0rtEziYCKmjO iNm3Lnij0Iefpj1wUQfV =nUaG -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJW5MNIAAoJEO2X6Q5iqn40GOIP/3nMNTy9HANyUl+iIlRRHeDB 2S8/VCOulJO6rWwLysuqAoKlHr2Ibrvr78N2v0H64KUGsnncVV4DJdy4l3u2r+Os Mf4RumPxdeVoLBWejlN2ASPwc2AujlTUrelscW4TVB3fRkjPu6uPqyhpNEYaryM3 UEvcib7KQvdGzK5jONIpUqqn4khrB7j/ccJ3ma7IlUIOSRku8fTneF4kYwpuqonI ewwJ34zJAevzKSvUpRbbg7m9ODl//5zA7vvCoF9/Mk1mnmcYXAQ2dZHwp+tRtNAw NtVwiQ4ATYgnQpiwUr8SzRST3o2KiSOQl+q5nAJhNAu4uYDYcYd2BkFZboVb1JMo ZRrrxaYEt7ruPNsQMrLiDtt/T7526QrGZ566TNFkeqE+b7jYhM6eB1yTyMmNt54c EKoRDmK6BsrK4v/UWvDZVBbLD3USo9E8rRKem/mbu6/1LgPKlRBSHG8y4OUAZ+LL +86nSiPm8vujj4oKHBLCr7mbaCKn0eEjKOVCZ/kFa5/5XoHyfU2nSeX71SP2frvy vnpFwCRMnaphhjQpetVj1vFTOpnUjVFGNAgHlEDqYH82B5KONLnzSE6uLX5+tVPh sQ6ZsH6Nvkg5gCsDidtYuL6barDn1+EJD7ekYIxty+triARc7vB6AQdXWJRT2lmF Z1yJqqtod0FsXF5DAiSx =kNEq -----END PGP SIGNATURE----- _______________________________________________ tz-announce mailing list tz-announce(a)iana.org https://mm.icann.org/mailman/listinfo/tz-announce

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Azerbaijan cancels DST
by Steffen Thorsen March 17, 2016

March 17, 2016

According to several news sources, the Azerbaijani Cabinet of Ministers has cancelled switching to daylight saving time. This seems to be valid immediately. http://www.azernews.az/azerbaijan/94137.html http://vestnikkavkaza.net/news/Azerbaijani-Cabinet-of-Ministers-cancels-day… http://en.apa.az/xeber_azerbaijan_abolishes_daylight_savings_ti_240862.html Best regards, Steffen Thorsen - timeanddate.com

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Building tzcode on Windows / MinGW
by Matt Johnson March 16, 2016

March 16, 2016

With the recent contributions to tzcode, I understand that building under MinGW should now be possible. However, I've gone through all the docs I could find on various ways to set up an environment for this, and despite my best efforts and several hours of frustration, I could not get a successful build. It would be greatly appreciated if someone could either respond with a quick "how to", or post a blog or something explaining the minimal setup needed to make this work. Which distribution do I download (MinGW, MinGW-w64), what environment do I need (cygwin, msys, bare windows), what minimal toolchain or cygwin packages, or msys packages, etc do I need? Do I need "Win-builds" (win-build.org)? Also, is compiling under Visual Studio possible? At the end of the day, I want a zic.exe that I can run against a specific set of tzdata source files, and a zdump.exe I can run on the binary output of zic. I'd like to be able to run both on Windows without having to have anything special on the machine at runtime. Thanks, Matt

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Re: [tz] Status in the Carribean
by Steve Jones March 15, 2016

March 15, 2016

>At 09:18 AM 3/15/2016, Paul_Koning(a)Dell.com wrote: >>A limitation of that format is that it doesn't show that DST rules >>vary from one country to another, so while there is a whole stripe >>of EST/EDT, the transition may not occur all at once across that whole stripe. Paul: Yes, that is a significant limitation. On the exceptions page (http://ontimezone.com/exceptions.php#dst) it says "...most North American locations follow DST (not necessarily on the same schedule)." Then it lists the exceptions. I haven't found a simple, intuitive way to present that data on the map. I've tried, and it just seems to further obfuscate an already confusing topic. Within the limited scope of OnTimeZone.com (http://ontimezone.com/images/na.gif) all DST observance is on the same schedule with the sole exception of that portion of Mexico outside the states of Sonora and Quintana Roo (which do not observe DST) and the poorly defined areas near the US border (20km + various specific locales), which observe DST on the US schedule. Steve Jones OnTimeZone.com

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Re: [tz] Status in the Carribean
by Steve Jones March 15, 2016

March 15, 2016

At 06:20 PM 3/14/2016, Clinton Roy wrote: >(404's for me :) Argh! Apologies, and thanks for the heads-up. It's working now: http://OnTimeZone.com/images/caribbean.gif Steve Jones OnTimeZone.com

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2016b is on GitHub
by Paul Eggert March 15, 2016

March 15, 2016

Given the urgency of the Haiti rule change in a few hours, I've prepared a new tz version 2016b. It is available at <https://github.com/eggert/tz> as commit 70161f48bc212678c58490f7faabc286c90b2a05. Although this is intended to be the next release, published as usual, it can take a bit of time to turn the crank so I thought I'd give the mailing list a heads-up. 2016b does not incorporate all changes recently circulated. Notably it's missing historical changes for Russia contributed by Stepan Golosunov, which I haven't had time to proofread carefully. I'd like to get all this stuff fixed soon, although we may have to wait until the spring silly season is over.

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Some historical information about tz code.
by Random832 March 15, 2016

March 15, 2016

(Posted to both The Unix Heritage Society and the TZ mailing list) I've been off-and-on reading the "live minus thirty years" old usenet feed at olduse.net, and noticed something that may be of interest to both of these groups: The original mod.sources posting of the (as far as I can tell) earliest available version of Arthur David Olson's timezone handling code, in 1986. https://groups.google.com/d/msg/mod.sources/gcolqTxTt9w/04ZtaYCxLvcJ For the files present in both, it matches revision 7441f6b6 from the git repository, except for SCCS IDs vs %W%. https://github.com/eggert/tz/tree/7441f6b6705782743f40b9fc40cdcc80a498fda5 The git repository contains a file ialloc.c that is not present in the release. Probable renamed files - These appear in the git repository under their new names, but had the older names in the release. New: localtime.c newctime.3 zdump.c zic.8 zic.c Old: tzcomp.8 tzcomp.c tzdump.c settz.c settz.3 Files in the release but not this version of the git repository: mkdir.c strchr.c: These never appear, though they're referenced in Makefile edits. pacificnew: doesn't appear until SCCS version 8.1 in revision aaf2a927 dated July 2006. years.sh: Appears as SCCS 7.1 yearistype.sh, dated March 1992.

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More DST humor
by Steve Jones March 15, 2016

March 15, 2016

A recent take on kind of an obvious joke - I bet it first made the rounds in 1947: http://xkcd.com/1655/ Steve Jones OnTimeZone.com

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Status in the Carribean
by Steve Jones March 14, 2016

March 14, 2016

It's been a busy time in the Carribean, what with Quitana Roo, Turks & Caicos, and now Haiti. I've updated an image that reflects the new current status of that region: http://OnTimeZone.com/images/caribbean.gif (magenta lines = time zone borders) (blue lines = dst observance borders) Over water, the lines were not drawn to be "anatomically correct", though they lie on the correct side of any island. Steve Jones OnTimeZone.com

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Recent William Willett article from BBC site
by Brian Inglis March 14, 2016

March 14, 2016

Didn't see this mentioned on the list, so might want to add the article link below under Civil Time: http://www.bbc.com/future/story/20160310-the-builder-who-changed-how-the-wo… -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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[PATCH 1/1] Add UTC to zone tables
by J William Piggott March 14, 2016

March 14, 2016

* etcetera, zone.tab, zone1970.tab: Create a link to UTC in Europe and add it to the zone tables. --- etcetera | 3 +++ zone.tab | 3 ++- zone1970.tab | 3 ++- 3 files changed, 7 insertions(+), 2 deletions(-) diff --git a/etcetera b/etcetera index c2e2532..745a5e0 100644 --- a/etcetera +++ b/etcetera @@ -12,6 +12,9 @@ Zone Etc/GMT 0 - GMT Zone Etc/UTC 0 - UTC Zone Etc/UCT 0 - UCT +# To facilitate a zone table entry for UTC. +Link Etc/UTC Europe/UTC + # The following link uses older naming conventions, # but it belongs here, not in the file 'backward', # as functions like gmtime load the "GMT" file to handle leap seconds properly. diff --git a/zone.tab b/zone.tab index f7000f7..bf46077 100644 --- a/zone.tab +++ b/zone.tab @@ -180,7 +180,8 @@ FM +0519+16259 Pacific/Kosrae Kosrae FO +6201-00646 Atlantic/Faroe FR +4852+00220 Europe/Paris GA +0023+00927 Africa/Libreville -GB +513030-0000731 Europe/London +GB +513030-0000731 Europe/London Britain (most areas) +GB +512840-0000005 Europe/UTC Britain (Greenwich/GMT/UTC) GD +1203-06145 America/Grenada GE +4143+04449 Asia/Tbilisi GF +0456-05220 America/Cayenne diff --git a/zone1970.tab b/zone1970.tab index 657675f..0c5876e 100644 --- a/zone1970.tab +++ b/zone1970.tab @@ -166,7 +166,8 @@ FM +0658+15813 Pacific/Pohnpei Pohnpei/Ponape FM +0519+16259 Pacific/Kosrae Kosrae FO +6201-00646 Atlantic/Faroe FR +4852+00220 Europe/Paris -GB,GG,IM,JE +513030-0000731 Europe/London +GB,GG,IM,JE +513030-0000731 Europe/London Britain (most areas) +GB +512840-0000005 Europe/UTC Britain (Greenwich/GMT/UTC) GE +4143+04449 Asia/Tbilisi GF +0456-05220 America/Cayenne GH +0533-00013 Africa/Accra

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Chile to return to DST
by Yonathan Dossow March 13, 2016

March 13, 2016

Hi, Chile is returning to implement Daylight Savings Time. Minister Pacheco is telling on the local news that on may 14 Chile will change it's timezone to UTC-4 until the second saturday of august. the rest of the year will be on summer time (UTC-3) I cant find an official decree yet, but here is the info from a news site: http://www.ahoranoticias.cl/chile/santiago/167677-gobierno-repone-el-cambio… regards. -- Yonathan Dossow Fono: +56 32 2654367 Unidad de Infraestructura y Tecnología Departamento de Informática Universidad Técnica Federico Santa María Valparaíso, Chile

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US DST in 1918
by Steve Jones March 13, 2016

March 13, 2016

Apparently DST was important to the United Cigar Stores Company: http://cdn.loc.gov/service/pnp/cph/3g00000/3g08000/3g08100/3g08124v.jpg https://upload.wikimedia.org/wikipedia/commons/thumb/e/e1/Victory-Cigar-Con… Apologies if these have already been shared. Steve Jones OnTimeZone.com

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Chile DST starts again, May 14th
by Cristian Rodríguez March 13, 2016

March 13, 2016

Hi: DST will be back fin Chile, starting the second Saturday of May and ending the Second saturday of August 2016. http://www.latercera.com/noticia/nacional/2016/03/680-672074-9-gobierno-det… Cheers.

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Palestine Summer Time
by Hanna Kreitem March 13, 2016

March 13, 2016

Hello, It was announced that Palestine will move to DST Saturday 26/3, this covers the timezones of Hebron and Gaza. Source: http://www.24fm.ps/ar/news/1457438748 Regards, Hanna.

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Haiti not changing to DST tonight
by Steffen Thorsen March 12, 2016

March 12, 2016

Jean Antoine, editor of www.haiti-reference.com informed us that Haiti are not going on DST this year. Several other resources confirms this, auto-translation under: The Presidency Communication Office informs the general public and the press in particular that no by season time change is planned for this year. Thus, the national time will not be extended or retracted Sunday, March 13, 2016. The Presidential Communications Office invites the public to consider this provision to have no setbacks in his daily activities. http://www.radiotelevisioncaraibes.com/presse/heure_d_t_pas_de_changement_d… http://www.vantbefinfo.com/changement-dheure-pas-pour-haiti/ http://news.anmwe.com/haiti-lheure-nationale-ne-sera-ni-avancee-ni-reculee-… Best regards, Steffen Thorsen - timeanddate.com

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Time zones in the arts
by Arthur David Olson March 11, 2016

March 11, 2016

(I'll forego any comment about the absence of an Oxford comma.) @dashdashado 1.1 531 lines 1.2 538 lines *** /tmp/,atz-art.htm 2016-03-11 09:52:55.639707700 -0500 --- /tmp/,btz-art.htm 2016-03-11 09:52:55.715712200 -0500 *************** *** 451,456 **** --- 451,463 ---- proceeds as though it's also mid-evening there.) </li> </ul> + <li> + In the "14 Days to Go"/"T Minus..." episode of "You, Me and the Apocalypse" + (first aired 2015-11-11 in the UK, 2016-03-10 in the US), + the success of a mission to deal with a comet + hinges on whether or not Russia observes Daylight Saving Time. + (In the US, the episode first aired in the week before the switch to DST.) + </li> <hr> <ul> <li>

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[PATCH 0/5] Standardize zone table comments format
by J William Piggott March 10, 2016

March 10, 2016

Not having a standard format for zone table comments is creating ambiguity. For example: 1 Thule / Pituffik 2 Pohnpei (Ponape) 3 Nova Scotia (peninsula) 4 peninsular Malaysia 5 Eastern Time - Pangnirtung, Nunavut 6 Central Time - Campeche, Yucatán 1 and 2 are different formats for alternate names/spellings. 3 shows a sub-region, but uses the same format as the previous alternate name. 4 places the sub-region before the region, where 3 has it after and uses a different format. 5 and 6 use the same format, but 5 defines a single sub-region while 6 defines two regions. These ambiguities make it impossible to interpret the comments without having prior knowledge of the area. This patch set is an effort to standardize the column 4 comments format as follows: A dash (-) is consistently used to delimit a zone_id prefix, so that was retained. A comma (,) is consistently used to delimit regions, so that was retained. Using a slash (/) to delimit alternate names/spellings is accepted English grammar, so that was chosen. Placing sub-regions after regions facilitates having list items begin in uppercase (which is both aesthetically pleasing and grammatically correct) and improves the usability of a sorted list; so that was chosen. Delimiting sub-regions with with curved braces () is in current practice, so that was chosen. Finally two letter codes for regions/sub-regions are included at the end of the sub-region(s) within the curved braces. Multiple regions grouped with the same sub-region(s) are delimited with a comma between the final region of the group and the sub-region(s). Region sub-region groups are delimited from other regions with a semicolon. At least one zone_id or region must be given. When adding a foreign country code to a zone_id on border locations, add it after the zone_id to accommodate implementations that sort the list. This will group zone_id's together, for example: Mountain Time - Chihuahua (away from US border) Mountain Time US - Chihuahua (near US border) Use full words in favor of abbreviations. This format can be represent as: [zone_id] [-] [region[(sub_region, ... [2_letter_code, ... ])][,|;] ... ] There currently are no zone table comments that model the full specification, so here is an imaginary example of the full spec: Central Scooter Time - Yamaha (YZ); Harley, Davidson, Sprint, (west coast XL, XR, FL, ST); Honda (most locations CB, CR), Suzuki, Kawasaki, Vespa The following changes since commit 99b658c3a129dfd0cb777337575e200656b8ff9d: * NEWS, Theory: Clear up descriptions of tzdata abbreviations. (2016-02-14 12:36:54 -0800) are available in the git repository at: git@github.com:jwpi/tz.git zonetab0215 for you to fetch changes up to cf921321194419bc88104da5d7a3a7cfac0ca47e: Standardize zone table comment format (2016-02-20 11:30:20 -0500) ---------------------------------------------------------------- J William Piggott (5): Holiday Islands does not exist. North of Scoresbysund is named National Park Durango is not a border state Use proper names for Baja California States Standardize zone table comment format australasia | 8 +++ europe | 8 +++ northamerica | 6 +- zone.tab | 240 +++++++++++++++++++++++++++++++-------------------------------- zone1970.tab | 250 +++++++++++++++++++++++++++++++++--------------------------------- 5 files changed, 264 insertions(+), 248 deletions(-) --- 8< Example zone1970.tab comments using the standardized format: Adelaide Island (Rothera Station) Anvers Island (Palmer Station) Holme Bay (Mawson Station) Vestfold Hills (Davis Station) Bailey Peninsula (Casey Station) Lake Vostok (Vostok Station) Adélie Land (Dumont-d'Urville Station) East Ongul Island (Syowa Station) Queen Maud Land (Troll Station) Buenos Aires (BA, CF) Argentina (most locations CB, CC, CN, ER, FM, MN, SE, SF) Salta (SA, LP, NQ, RN) Jujuy (JY) Tucumán (TM) Catamarca (CT), Chubut (CH) La Rioja (LR) San Juan (SJ) Mendoza (MZ) San Luis (SL) Santa Cruz (SC) Tierra del Fuego (TF) Samoa, Midway Lord Howe Island Macquarie Island Tasmania (most locations) Tasmania (King Island) Victoria New South Wales (most locations) New South Wales (Yancowinna) Queensland (most locations) Queensland (Whitsunday Islands) South Australia Northern Territory Western Australia (most locations) Western Australia (Eucla) Atlantic islands Pará (east), Amapá Northeast Brazil (MA, PI, CE, RN, PB) Pernambuco Tocantins Alagoas, Sergipe Bahia South Brazil, Southeast Brazil, (GO, DF, MG, ES, RJ, SP, PR, SC, RS) Mato Grosso do Sul Mato Grosso Pará (west) Rondônia Roraima Amazonas (east) Amazonas (west) Acre Newfoundland, Labrador (southeast) Atlantic Time - Nova Scotia (peninsula), Prince Edward Island Atlantic Time - Nova Scotia (Cape Breton) Atlantic Time - New Brunswick Atlantic Time - Labrador (most locations) Atlantic Standard Time - Quebec (Lower North Shore) Eastern Time - Ontario, Quebec, (most locations) Eastern Time - Ontario, Quebec, (places that did not observe DST 1967-1973) Eastern Time - Ontario (Thunder Bay) Eastern Time - Nunavut (most eastern locations) Eastern Time - Nunavut (Pangnirtung) Central Time - Nunavut (Resolute) Eastern Standard Time - Ontario (Atikokan), Nunavut (Southampton Island) Central Time - Nunavut (central) Central Time - Ontario (west), Manitoba Central Time - Ontario (Rainy River, Fort Frances) Central Standard Time - Saskatchewan (most locations) Central Standard Time - Saskatchewan (midwest) Mountain Time - Alberta, British Columbia (east), Saskatchewan (west) Mountain Time - Nunavut (west) Mountain Time - Northwest Territories (central) Mountain Time - Northwest Territories (west) Mountain Standard Time - British Columbia (Creston) Mountain Standard Time - British Columbia (Dawson Creek, Fort Saint John) Mountain Standard Time - British Columbia (Fort Nelson) Pacific Time - British Columbia (west) Pacific Time - Yukon (south) Pacific Time - Yukon (north) Swiss Time Chile (most locations) Easter Island Beijing Time Xinjiang Time Germany (most locations) Ecuador (mainland) Galápagos Islands Spain (mainland) Ceuta, Melilla Canary Islands Chuuk/Truk, Yap Pohnpei/Ponape Kosrae Greenland (most locations) National Park (east coast) Scoresbysund/Ittoqqortoormiit Thule/Pituffik Java, Sumatra Borneo (west, central) Borneo (east, south), Sulawesi (Celebes), Bali, Nusa Tengarra, Timor (west) New Guinea (West Papua / Irian Jaya), Maluku/Moluccas Gilbert Islands Phoenix Islands Line Islands Kazakhstan (most locations) Qyzylorda/Kyzylorda/Kzyl-Orda Aqtobe/Aktobe Atyrau/Atirau/Gur'yev, Mangghystau/Mankistau West Kazakhstan Marshall Islands (most locations) Kwajalein Mongolia (most locations) Bayan-Ölgii, Govi-Altai, Hovd, Uvs, Zavkhan Dornod, Sükhbaatar Central Time Eastern Standard Time - Quintana Roo Central Time - Campeche, Yucatán Central Time - Durango; Coahuila, Nuevo León, Tamaulipas, (away from US border) Central Time US - Coahuila, Nuevo León, Tamaulipas, (near US border) Mountain Time - Baja California Sur, Nayarit, Sinaloa Mountain Time - Chihuahua (away from US border) Mountain Time US - Chihuahua (near US border) Mountain Standard Time - Sonora Pacific Time US - Baja California Central Time - Bahía de Banderas Malaysia (peninsula) Sabah, Sarawak UTC+2 - Central Africa Time UTC+1 - West Africa Time New Zealand Time Chatham Islands Society Islands Marquesas Islands Gambier Islands Papua New Guinea (most locations) Bougainville Gaza Strip West Bank Portugal (mainland) Madeira Islands Azores Réunion Island, Crozet Islands, Scattered Islands Moscow-01 - Kaliningrad Moscow+00 - Russia (west) Moscow+00 - Crimea Moscow+00 - Caspian Sea Moscow+01 - Samara, Udmurtia Moscow+02 - Urals Moscow+03 - Siberia (west) Moscow+03 - Novosibirsk Moscow+04 - Kemerovo Moscow+04 - Yenisei River Moscow+05 - Lake Baikal Moscow+05 - Zabaykalsky Moscow+06 - Lena River Moscow+06 - Tomponsky, Ust-Maysky Moscow+07 - Amur River Moscow+07 - Sakhalin Island Moscow+07 - Oymyakonsky Moscow+07 - Magadan Moscow+08 - Sakha (east), North Kuril Islands Moscow+09 - Kamchatka Moscow+09 - Bering Sea Kerguelen, St Paul Island, Amsterdam Island Indochina (most locations) Ukraine (most locations) Ruthenia Zaporozh'ye/Zaporizhia, Lugansk/Luhansk (east) Wake Island Eastern Time Eastern Time - Michigan (most locations) Eastern Time - Kentucky (Louisville area) Eastern Time - Kentucky (Wayne) Eastern Time - Indiana (most locations) Eastern Time - Indiana (Daviess, Dubois, Knox, Martin) Eastern Time - Indiana (Pulaski) Eastern Time - Indiana (Crawford) Eastern Time - Indiana (Pike) Eastern Time - Indiana (Switzerland) Central Time Central Time - Indiana (Perry) Central Time - Indiana (Starke) Central Time - Michigan (Dickinson, Gogebic, Iron, Menominee) Central Time - North Dakota (Oliver) Central Time - North Dakota (Morton except Mandan area) Central Time - North Dakota (Mercer) Mountain Time Mountain Time - Idaho (south), Oregon (east) Mountain Standard Time - Arizona (except Navajo) Pacific Time Alaska Time Alaska Time - Alaska Panhandle Alaska Time - Alaska Panhandle (southeast) Alaska Time - Annette Island Alaska Time - Alaska Panhandle (neck) Alaska Time - Alaska (west) Aleutian Islands Hawaii Time Uzbekistan (west) Uzbekistan (east) Vietnam (south)

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zic changes (2/2)
by Arthur David Olson March 9, 2016

March 9, 2016

And now, the update. These changes arrange things so that binary files include "transition" entries for minimum time values; these entries eliminate localtime guesswork in handling low-valued time stamps. The bad news: binary files grow slightly as a result of these changes. The good news: there are no changes in the output of "zdump -v" applied to before-and-after versions of all the binary files generated by a "make install." Changes are attached and appear in mangled form below; these are relative to the github version of zic.c after the rollback in the earlier message today. @dashdashado 1.2 2805 lines 1.4 2813 lines *** /tmp/,azic.c 2014-05-01 01:51:36.998933800 -0400 --- /tmp/,bzic.c 2014-05-01 01:51:37.092534000 -0400 *************** *** 1480,1493 **** fromi = 0; while (fromi < timecnt && attypes[fromi].at < min_time) ++fromi; - if (isdsts[0] == 0) - while (fromi < timecnt && attypes[fromi].type == 0) - ++fromi; /* handled by default rule */ for ( ; fromi < timecnt; ++fromi) { ! if (toi != 0 && ((attypes[fromi].at + gmtoffs[attypes[toi - 1].type]) <= ! (attypes[toi - 1].at + gmtoffs[toi == 1 ? 0 ! : attypes[toi - 2].type]))) { attypes[toi - 1].type = attypes[fromi].type; continue; --- 1480,1490 ---- fromi = 0; while (fromi < timecnt && attypes[fromi].at < min_time) ++fromi; for ( ; fromi < timecnt; ++fromi) { ! if (toi > 1 && ((attypes[fromi].at + gmtoffs[attypes[toi - 1].type]) <= ! (attypes[toi - 1].at + ! gmtoffs[attypes[toi - 2].type]))) { attypes[toi - 1].type = attypes[fromi].type; continue; *************** *** 1532,1537 **** --- 1529,1541 ---- --timecnt32; ++timei32; } + /* + ** Output an INT32_MIN "transition" if appropriate--see below. + */ + if (timei32 > 0 && ats[timei32] > INT32_MIN) { + --timei32; + ++timecnt32; + } while (leapcnt32 > 0 && !is32(trans[leapcnt32 - 1])) --leapcnt32; while (leapcnt32 > 0 && !is32(trans[leapi32])) { *************** *** 1698,1704 **** #undef DO for (i = thistimei; i < thistimelim; ++i) if (pass == 1) ! puttzcode(ats[i], fp); else puttzcode64(ats[i], fp); for (i = thistimei; i < thistimelim; ++i) { unsigned char uc; --- 1702,1713 ---- #undef DO for (i = thistimei; i < thistimelim; ++i) if (pass == 1) ! /* ! ** Output an INT32_MIN "transition" ! ** if appropriate--see above. ! */ ! puttzcode(((ats[i] < INT32_MIN) ? ! INT32_MIN : ats[i]), fp); else puttzcode64(ats[i], fp); for (i = thistimei; i < thistimelim; ++i) { unsigned char uc; *************** *** 2176,2183 **** if (usestart) { addtt(starttime, type); usestart = FALSE; ! } else if (stdoff != 0) ! addtt(min_time, type); } else for (year = min_year; year <= max_year; ++year) { if (useuntil && year > zp->z_untilrule.r_hiyear) break; --- 2185,2191 ---- if (usestart) { addtt(starttime, type); usestart = FALSE; ! } else addtt(min_time, type); } else for (year = min_year; year <= max_year; ++year) { if (useuntil && year > zp->z_untilrule.r_hiyear) break;

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YouTube videos on time zones
by Matt Johnson March 8, 2016

March 8, 2016

If these two aren't in our art file, they probably should be. "Daylight Saving Time Explained" - CGP Grey https://youtu.be/84aWtseb2-4 Among other things, explains Arizona's enclaves and exclaves quite well. "The Problem with Time & Timezones" - Computerphile / Tom Scott https://youtu.be/-5wpm-gesOY Though Tom gets Nepal's time zone offset wrong - can you blame him?

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field separators in tzdata2016a.tar.gz
by Joris Wu March 8, 2016

March 8, 2016

Dear reader, While writing a Perl script to parse the original TZ data files, I discovered that most fields are separated by tab characters ( ASCII 09 ), yet some by spaces. Given the frequency, I expect tabs were the intended separator. It makes parsing less ambiguous anyhow. I converted a set of space separators in attached patches. Not all, as I do not know yet what is the intent here. Regards, Joris Software developer Brisbane

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