- tz - lists.iana.org

Re: [tz] [PATCH] manual: time: fix typo in IST example
by Paul Eggert March 14, 2014

March 14, 2014

Thanks for catching that. I fixed a similar bug in the upstream tz documentation, here: https://github.com/eggert/tz/commit/3f0f945c170c6a6f3bb529191230d1a19f885c85

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Time on Johnston Island
by Lyle March 13, 2014

March 13, 2014

While doing research on atomic bomb testing, I found that at one point, when JI was being used for that testing, the time being used was not Hawaiian time but rather the same time being used on the ships, which had a GMT offset of -11 hours. This apparently applied to at least the time from Operation Newsreel (Hardtack I/Teak shot, 1968-8-1) to the last Operation Fishbowl shot (Tightrope, 1962-11-4). The document that lead us to that conclusion is by Herman Hoerlin, "The United States High-Altitude Test Experience: A Review Emphasizing the Impact on the Environment", Los Alamos LA-6405, Oct 1976. Fas.org/sgo/othergov/doe/lanl/docs1/00322994.pdf. See the table on page 4 where he lists GMT and local times for the tests; a footnote for the JI tests reads that local time is "JI time = Hawaii Time Minus One Hour". A little give-back for the use of your database in informing the atomic test tables on Wikipedia. Thanks. Lyle McElhaney Lmc(a)ashabon.com

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Windows 8.1 and tz data?
by Donald MacQueen March 11, 2014

March 11, 2014

In the email announcement titled " 2014a release of tz code and data available", there is this statement: Microsoft Windows 8.1 and later support tz database names. I did not see this mentioned on the tz list and an hour's googling brings me no joy. Does anyone have any links that will ease my confusion? Thanks -- Donald [|] Joel Cairo: "You always have a very smooth explanation." Sam Spade: "What do you want me to do? Learn to stutter?" - The Maltese Falcon

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[tz-announce] 2014a release of tz code and data available
by Paul Eggert March 9, 2014

March 9, 2014

The 2014a 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: Changes affecting near-future time stamps Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for the heads-up, and to Tim Parenti for simplifying the update.) Changes affecting past time stamps Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00. (Thanks to Steffen Thorsen.) Ukraine switched from Moscow to Eastern European time on 1990-07-01 (not 1992-01-01), and observed DST during the entire next winter. (Thanks to Vladimir in Moscow via Alois Treindl.) In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03. (Thanks to Avigdor Finkelstein.) Changes affecting code An uninitialized-storage bug in 'localtime' has been fixed. (Thanks to Logan Chien.) Changes affecting the build procedure The settings for 'make check_web' now default to Ubuntu 13.10. Changes affecting commentary and documentation The boundary of the US Pacific time zone is given more accurately. (Thanks to Alan Mintz.) Chile's 2014 DST will be as predicted. (Thanks to Jose Miguel Garrido.) Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Raul Perasso.) Better descriptions of countries with same time zone history as Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.) Several changes affect tz-link.htm, the main web page. Mention Time.is (thanks to Even Scharning) and WX-now (thanks to David Braverman). Mention xCal (Internet RFC 6321) and jCal. Microsoft Windows 8.1 and later support tz database names. CLDR data is available in both XML and JSON form. Mention Maggiolo's map of solar vs standard time. (Thanks to Arthur David Olson.) Mention TZ4Net. (Thanks to Matt Johnson.) Mention the timezone-olson Haskell package. Mention zeitverschiebung.net. (Thanks to Martin Jaeger.) Remove moribund links to daylight-savings-time.info and to Simple Timer + Clocks. Update two links. (Thanks to Oscar van Vlijmen.) Fix some formatting glitches, e.g., remove random newlines from abbr elements' title attributes. Here are links to the release files: ftp://ftp.iana.org/tz/releases/tzcode2014a.tar.gz ftp://ftp.iana.org/tz/releases/tzdata2014a.tar.gz The files are also available via HTTP as follows: http://www.iana.org/time-zones/repository/releases/tzcode2014a.tar.gz http://www.iana.org/time-zones/repository/releases/tzdata2014a.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. 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 This release corresponds to commit ff4e892f5daae9832c547ea5638dbccf66a725e4 dated Fri Mar 7 23:30:29 2014 -0800 and tagged '2014a' in the unofficial github repository at <https://github.com/eggert/tz>. Here are the GPG checksums for the release files: -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAABAgAGBQJTGsfvAAoJEO2X6Q5iqn40OCIP/jotmix472vJEDwRltmiIJOi 3jKrLBHOzlyMYst2XpPcES6vd5o4OfQs9rLe4ByGHVdc0bkaW+buYQLmAp3mwJdN habI13bpxTOPbnNwefoFfxkXD8ufAAvwO+zs43CpigJXpz54XcZDsFU4IBxGPPy/ BZW3E7AxtwF9olhYRfi6AfuIx1swJevWxZW/jfc1Z8+nsfPzEcik0C5pU7ZkoMer pOG6Mjeo8sPV9Y/1BICU8QSp2OlgEcZsx4DpNaFMGKZhbcxOqjWhjzF8bELadGNa TAhTOsm5N7YPGIykJzNmqpe8F1Allmy5qi02ORecIE71HNjxVPXJ0JcD+d2P+75F DMj6WYD+/Fe2op/NJbTrBRigrTkW7jw5hfmudZuMfCS47cdd+72I7vjlcqbbnSH2 +whsZYP6XjYh9XiocEh0kZ+ChCZwZjiMnbKkfTnDuN9H5e+ayoyzz5Sb2UU4VOKq 4trQ2CJ+03Af+f4YoY3fyc4FHa8mAtoDM6dtra1qTkmF5+xVSu6XhJe7Xc14Ic/o SJxWlIUqfodUtbk1RuyiiJkin2F9z7zdA4VaQP9IO6TO9P6ZDhzQWjaH7U+3B4/U PZbhuth1j43QgZenVSM0u6ZmuhV5VFaI+lzMOb9b1luOFFPl0LfSBM8+8CRV+WJI NkwyvqbMadS8m9a8YI8Q =ZVxY -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAABAgAGBQJTGsfvAAoJEO2X6Q5iqn405tsP/2yqu/vRF8BYCfMWdTQJbQcP lcwnhU5zbSSYoV7arajAN4odOTpeSOZqfpFFzQDdJaDLq2k6R9xXRSsmqjmoIrC1 tofe+CWwq6V+CRjJRu5PIAEzmjOayVlQNo5OXopL6M4xHE+pqCmOMMS8dmhGrAAc KizzuxlQ7lgo0RdekftmcSpljalhotYTbXyUqqOsBd0fe+EJzTO0Cq4OiodpBG+v d/8haZ38HGot9KN+OwtJ97ROg/upCQrjyTcof4Cuj29Sgk7zAmQB8CXizQx7Bi3T VQdzMZDhg2+lZJl480QSRo7stjHGlLhQR4Lq9maQ1gAemWkPzZYAj1Cg73Nd9x2w FfovksqXJiW4qugdNbFN6bPKFhBlvokIjLltbYXOOZG2OhDBKuakel8RxAwT63qp vRcS972rkbCBxXOCHRmXqFWS18fIV30NNiTwTCSC6rJqHmeUzqowd8pMuXcbRzkN y64UJOHrVaalWJ7KVrqgv+JpaI1Cgnufecg8mfUwI+0u90Xr5MyfWKdf+ze58d0l 7lK8tMB5alwwSUpcOKyCRzoKyD1K8xiJv367slaN+5fMUW2AU5jhxkZYe6s62Req 3Arp2YNpaN5Gr/RP8hgSKGYvKXOzhhSXr3XA1kiTVQ387d/EKHrnghvGamjSOf0/ aALMyxRj3/d1M7aPvatu =rONK -----END PGP SIGNATURE----- _______________________________________________ tz-announce mailing list tz-announce(a)iana.org https://mm.icann.org/mailman/listinfo/tz-announce

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Re: [tz] Web sites using recent versions of the tz database
by Paul Eggert March 8, 2014

March 8, 2014

Thanks for the various heads-up about links in tz-link.htm. I installed the attached patch.

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No Virgin Islands Data
by Hank W. March 8, 2014

March 8, 2014

The data for the Virgin Islands, both British & US, is missing. I checked an old dataset (2012j) and found them at the end of the northamerica file. They have since been replaced by a note saying 'see southamerica', but they're not in the southamerica file, either. Hank W., Austin, Texas, USA

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Possible error in Europe/Kiev for 1991 - 1992
by Alois Treindl March 8, 2014

March 8, 2014

In western and Ukrainian astrology circles, there is on ongoing dispute about which timezone was in force in Kiev/Ukraine on the date the parliament decided about its independence, on 24 August 1991. Mostly, a timezone of GMT +3h is considered correct. This is in conflict with what TZ database states for that date. TZ database holds: # Most of Ukraine since 1970 has been like Kiev. Zone Europe/Kiev 2:02:04 - LMT 1880 2:02:04 - KMT 1924 May 2 # KievMTime 2:00 - EET 1930 Jun 21 3:00 - MSK 1941 Sep 20 1:00 C-Eur CE%sT 1943 Nov 6 3:00 Russia MSK/MSD 1990 3:00 - MSK 1990 Jul 1 2:00 2:00 - EET 1992 2:00 E-Eur EE%sT 1995 2:00 EU EE%sT Which makes reference to these DST rules #DST rules for Russia after WW2 Rule Russia 1981 1984 - Apr 1 0:00 1:00 S Rule Russia 1981 1983 - Oct 1 0:00 0 - Rule Russia 1984 1991 - Sep lastSun 2:00s 0 - Rule Russia 1985 1991 - Mar lastSun 2:00s 1:00 S Rule Russia 1992 only - Mar lastSat 23:00 1:00 S Rule Russia 1992 only - Sep lastSat 23:00 0 - Rule Russia 1993 2010 - Mar lastSun 2:00s 1:00 S Rule Russia 1993 1995 - Sep lastSun 2:00s 0 - Rule Russia 1996 2010 - Oct lastSun 2:00s 0 - #Modern EU rules Rule EU 1981 max - Mar lastSun 1:00u 1:00 S Rule EU 1996 max - Oct lastSun 1:00u 0 - # E-Eur differs from EU only in that E-Eur switches at midnight local time. Rule E-Eur 1977 1980 - Apr Sun>=1 0:00 1:00 S Rule E-Eur 1977 only - Sep lastSun 0:00 0 - Rule E-Eur 1978 only - Oct 1 0:00 0 - Rule E-Eur 1979 1995 - Sep lastSun 0:00 0 - Rule E-Eur 1981 max - Mar lastSun 0:00 1:00 S Rule E-Eur 1996 max - Oct lastSun 0:00 0 - This gives for the transition years 1990/1991/1992 the following: - Kiev (and most of Ukraine) started the year 1990 with Moscow time (3he). - It did not apply DST on last Sunday of March 1990, like Russia did. - It went from 3he to 2he on 1st July 1990. - It had no DST during 1991, i.e. it was the whole year on 2he. - It stayed on 2he until last sunday in March 1992, when it turned on DST according the the E-Eur rules. Via my US colleage David Cochrane, I received copies from a Moscow fellow, first name Vladimir, who reported several government documents, refering to Ukrainia timezones. Vladimir writes: --- quote Good news that now we have more documents online in Ukrainian language as well as Google translator. > why this decree states to go off DST when DST was not observed in Kiev in 1991. I did a research in laws and now we have an answer. Unfortunately, we should change a little our DST tables for Kiev and Ukraine. First in Ukraine they changed Time zone from UTC+3 to UTC+2 with DST: 03 25 1990 02:00 -03.00 1 Time Zone 3 with DST 07 01 1990 02:00 -02.00 1 Time Zone 2 with DST * Ukrainian Government's Resolution of 18.06.1990, No. 134. http://search.ligazakon.ua/l_doc2.nsf/link1/T001500.html They did not end DST in September, 1990 (according to the law, "summer time" was still in action): 09 30 1990 03:00 -02.00 1 Time Zone 2 with DST * Ukrainian Government's Resolution of 21.09.1990, No. 272. http://search.ligazakon.ua/l_doc2.nsf/link1/KP900272.html Again no change in March, 1991 ("summer time" in action): 03 31 1991 02:00 -02.00 1 Time Zone 2 with DST DST ended in September 1991 ("summer time" ended): 09 29 1991 03:00 -02.00 0 Time Zone 2, no DST * Ukrainian Government's Resolution of 25.09.1991, No. 225. http://www.uazakon.com/documents/date_21/pg_iwgdoc.htm This is an answer. Since 1992 they had normal DST procedure: 03 29 1992 02:00 -02.00 1 DST started 09 27 1992 03:00 -02.00 0 DST ended * Ukrainian Government's Resolution of 20.03.1992, No. 139. http://www.uazakon.com/documents/date_8u/pg_grcasa.htm ------ end quote I (Alois) interpret him like this: - On 1 Jan 1990, Kiev was on GMT + 3h (I call this 3he, 3 hours east). - on 25 March 1990, at 02:00 am, it went to DST, i.e. to 4he - on 1 July 1990, at 2:00 am, it shifted the standard time, kept the DST, moving effectively from 4he to 3he - no change on 30 Sept 1990, the kept DST, i.e. stayed on 3he (Russia ended DST on that data) - no change on 31 March 1991, Kiev stayed on 3he (Russia began DST on that data) - on 29 Sept 1991, at 03:00 am, Kiev ended DST, went to 2he - on 29 March 1992, 2:00 am, Kiev started DST, went to 3he - on 27 Sept 1992, 2:00 am, Kiev ended DST, went to 2he I have used Google translation to get the content of the links Vladimir provides: A) http://search.ligazakon.ua/l_doc2.nsf/link1/T001500.html " Set on 1 July 1990 in the Ukrainian SSR, the second time zone with the addition of one hour." This page says that Ukraine adopted 2he as standard time on 1 July 1990. One could interpret this that it talks about the timezone being 2he plus one hour. But I do not think it does. I think it means: Standard time moved to 2he, the clock was shifted west by one hour, i.e. one hour was added in the course of transition. (from h3e to h2e, if DST was not in force, or from h4e to h3e, if DST was in force). The statement does not confirm whether DST was in force or not at that data. B) http://search.ligazakon.ua/l_doc2.nsf/link1/KP900272.html states that on 30 Sept 1990, Ukraine did not turn clocks back, but continues to use DST. This implies that DST was indeed in force, at that time. C) http://www.uazakon.com/documents/date_21/pg_iwgdoc.htm states that on 29 September 1991, DST was ended and clocks set back by one hour. My conclusion is: TZ database missed the onset of DST in March 1990, and in consequence, missed its end in September 1991. The goverment document C) clearly states that DST ended in Ukraine on 29 Sept 1991, a date when TZ database says that DTS was not in force. I propose this correction of Europe/Kiev Zone Europe/Kiev 2:02:04 - LMT 1880 2:02:04 - KMT 1924 May 2 # KievMTime 2:00 - EET 1930 Jun 21 3:00 - MSK 1941 Sep 20 1:00 C-Eur CE%sT 1943 Nov 6 3:00 Russia MSK/MSD 1990 Jul 1 2:00 2:00 1:00 EET 1991 Sep 29 3:00 2:00 E-Eur EE%sT 1995 2:00 EU EE%sT

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Wrong entry for Israel tz information
by AvigdorFin March 8, 2014

March 8, 2014

Greetings, It seems we found an error in Israel DST transition for the year 1988. Please check if I'm right and correct me it I'm wrong. This is the current information for the year, the transition has happened according to this on Friday night, changing to Saturday. $ zdump -v Israel | grep 1988 Israel Fri Apr 8 21:59:59 1988 UTC = Fri Apr 8 23:59:59 1988 IST isdst=0 gmtoff=7200 Israel Fri Apr 8 22:00:00 1988 UTC = Sat Apr 9 01:00:00 1988 IDT isdst=1 gmtoff=10800 Israel Fri Sep 2 20:59:59 1988 UTC = Fri Sep 2 23:59:59 1988 IDT isdst=1 gmtoff=10800 Israel Fri Sep 2 21:00:00 1988 UTC = Fri Sep 2 23:00:00 1988 IST isdst=0 gmtoff=7200 I check the Parliament ( Knesset ) records and there it's stated that the transition should take place on Saturday night, when the Sabbath ends and changes to Sunday. The definition in the source file is as follows: Rule Zion 1988 only - Apr 9 0:00 1:00 D Rule Zion 1988 only - Sep 3 0:00 0 S Which result with the times above. When changing the source to be: Rule Zion 1988 only - Apr 10 0:00 1:00 D Rule Zion 1988 only - Sep 4 0:00 0 S And compiling it with zic we get $ zdump -v Israel | grep 1988 Israel Sat Apr 9 21:59:59 1988 UTC = Sat Apr 9 23:59:59 1988 IST isdst=0 gmtoff=7200 Israel Sat Apr 9 22:00:00 1988 UTC = Sun Apr 10 01:00:00 1988 IDT isdst=1 gmtoff=10800 Israel Sat Sep 3 20:59:59 1988 UTC = Sat Sep 3 23:59:59 1988 IDT isdst=1 gmtoff=10800 Israel Sat Sep 3 21:00:00 1988 UTC = Sat Sep 3 23:00:00 1988 IST isdst=0 gmtoff=7200 And the transition is as decided by the parliament on Saturday night toward Sunday. I also added the following lines to the source file Link Asia/Jerusalem Israel Link Asia/Jerusalem IST-2IDT Please check me out and if I'm right, correct the next release of the tzdata file. I don't know how many people and organizations are still interested in data from 1988, but the record should be set right. Thanks in advance. -- Best Regards, Avigdor ---- Email: AvigdorFin@g <Avigdor.Finkelstein(a)tangram-soft.co.il>mail.com ISRAEL

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West Virginia broadcasters 1946 DST proposal
by Garrett Wollman March 8, 2014

March 8, 2014

Quoting from /Broadcasting * Telecasting/ of March 18, 1946: In a move believed to be unprecedented in radio, the newly-formed West Virginia Broadcasting Assn., comprising all stations in the state, will adopt daylight savings time form April 28 through Sept. 29 -- although West Virginia clocks will remain on standard time throughout that period. The time change was unanimously voted by the broadcasters at a meeting held in Charleston March 9. Representatives of all of the state's 14 stations agreed to the resolution. On March 12, all stations included the resolution in all newscasts. Under the plan, radio clocks will be changed to conform to network clocks [ed: the networks observed New York City time, which had DST in 1946] when time change occurs. This means that, unless the West Virginia legislature takes action to the contrary during a special session to be held in two weeks, West Virginians will have two time schedules -- that decreed by the state an that observed by radio. Time Announcements Participating stations will give time-announcements by the radio clock; they will make no rate adjustments, since their proposition is based on the assumption that West Virginia timekeepers are out of step with radio -- not vice versa. The article goes on to quote the full text of the resolution. -GAWollman

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Re: [tz] Tennessee time
by Matt Johnson March 2, 2014

March 2, 2014

The video from the Tennessee state house of representatives where this bill was pitched can be found here (about 10 min long): http://tnga.granicus.com/MediaPlayer.php?view_id=269&clip_id=8600&meta_id=15 8484 "... you came up with a Wang Dangger!" - Rep. Johnny Shaw I believe Rep. Todd is mistaken in his assertion that staying on DST year-round would give more daylight to schoolchildren waiting at the bus stop in the morning. Wouldn't it actually work in reverse? -----Original Message----- From: tz-bounces(a)iana.org [mailto:tz-bounces@iana.org] On Behalf Of lennox(a)cs.columbia.edu Sent: Thursday, February 20, 2014 8:07 AM To: Arthur David Olson Cc: tz(a)iana.org Subject: Re: [tz] Tennessee time (was Web sites using recent versions of the tz database) On Wednesday, February 19 2014, "Arthur David Olson" wrote to "tz(a)iana.org" saying: > On Wed, Feb 19, 2014 at 7:49 PM, Zoidsoft <zoidsoft(a)gmail.com> wrote: > > Tennessee has proposed permanent daylight time: > > http://www.chattanoogan.com/2014/2/18/269932/ > Legislation-Making-Daylight-Savings.aspx > > > If this moves forward at the state level, things could get interesting. > The US Uniform Time Act lets states choose whether or not to make the > DST switch, but may not allow for permanent DST (which would, in > effect, be a time zone switch). > > "Full text - Daylight Saving Time - United States Law - 15 USC > 6(IX) (260-7)" > http://www.webexhibits.org/daylightsaving/usc.html > > A reminder: I am not a lawyer. > > @dashdashado In principle, Tennessee could simultaneously move to Atlantic time, and stop using Daylight Savings Time. I think the fact that they could choose to call their resulting UTC-4 time zone "EDT" rather than "AST" probably wouldn't be in violation of the Uniform Time Act (but I'm not a lawyer either). That said, the federal Department of Transportation (which apparently has jurisdiction over such things) hasn't allowed Maine to move to Atlantic Time, so the odds that they'd allow Tennessee to do so seem rather low. (If Maine does ever manage to move its time zone, naming its zone identifier is going to be an interesting challenge for the TZDB -- since "America/Portland" is rather unfortunately ambiguous...) -- Jonathan Lennox lennox(a)cs.columbia.edu

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