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Finnish daylight saving time 1942
by Konstantin Hyppönen June 15, 2014

June 15, 2014

Hi, The rules for Finland say that summer time was in force in 1942 from Apr 3 to Oct 3: # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Finland 1942 only - Apr 3 0:00 1:00 S Rule Finland 1942 only - Oct 3 0:00 0 - However, http://almanakka.helsinki.fi/images/aikakirja/Aikakirja2013kokonaan.pdf pages 104-105, including a scan from a newspaper published on Apr 2 1942 say that it should be Oct 4, not Oct 3. On Apr 2 1942, 24 o’clock (which means Apr 3 1942, 0:00 o’clock), clocks were moved one hour forward. The newspaper mentions “on the night from Thursday to Friday”. The tz entry is correct for the start of the daylight saving time. On Oct 4 1942, clocks were moved at 1:00 one hour backwards. The tz entry should be corrected. Apparently not only the date, but also the time of day is wrong in the entry. Hope this helps. Konstantin Hyppönen

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[PATCH] Fix stack buffer overrun in mktime and similar functions.
by Paul Eggert June 15, 2014

June 15, 2014

* localtime.c (time1): Declare 'types' array to have TZ_MAX_TIMES entries, not TZ_MAX_TYPES entries. * NEWS: Document this. --- NEWS | 4 ++++ localtime.c | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/NEWS b/NEWS index 4ceddbe..ee48de9 100644 --- a/NEWS +++ b/NEWS @@ -7,6 +7,10 @@ Unreleased, experimental changes Finland's 1942 fall-back transition was October 4 at 01:00, not October 3 at 00:00. (Thanks to Konstantin Hyppönen.) + Changes affecting code + + A stack-overrun bug has been fixed in 'mktime' and similar functions. + Changes affecting commentary Commentary now uses UTF-8 instead of US-ASCII, allowing the use of diff --git a/localtime.c b/localtime.c index ff07c70..5eecdc1 100644 --- a/localtime.c +++ b/localtime.c @@ -1868,7 +1868,7 @@ time1(struct tm *const tmp, register int i; register int nseen; int seen[TZ_MAX_TYPES]; - int types[TZ_MAX_TYPES]; + int types[TZ_MAX_TIMES]; int okay; if (tmp == NULL) { -- 1.9.1

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[PATCH 1/4] Improve performance a bit with GNU Make.
by Paul Eggert June 14, 2014

June 14, 2014

* Makefile (.PHONY): New rule, listing non-file targets. --- Makefile | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Makefile b/Makefile index fa66b99..2c80fdd 100644 --- a/Makefile +++ b/Makefile @@ -585,3 +585,10 @@ zdump.o: version.h zic.o: private.h tzfile.h version.h .KEEP_STATE: + +.PHONY: ALL INSTALL all +.PHONY: check check_character_set check_public check_tables +.PHONY: check_time_t_alternatives check_web clean clean_misc +.PHONY: install maintainer-clean names posix_only posix_right +.PHONY: public right_only right_posix signatures tarballs typecheck +.PHONY: zonenames zones -- 1.9.1

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[tz-announce] 2014e release of tz code and data available
by Paul Eggert June 13, 2014

June 13, 2014

The 2014e 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 Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily switch to standard time at 24:00 the last Thursday before Ramadan, and back to DST at 00:00 the first Friday after Ramadan. Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks to Milamber Space Network.) Guess that from 2015 on Morocco will temporarily switch to standard time at 03:00 the last Saturday before Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. Changes affecting past time stamps The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of "MSD" for Moscow's double daylight time in summer 1921. Also, a typo "VLASST" has been repaired to be "VLAST" for Vladivostok summer time in 1991. (Thanks to Hank W. for reporting the problems.) Changes affecting commentary tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and removes stale pointers to World Time Explorer and WORLDTIME. Here are links to the release files: ftp://ftp.iana.org/tz/releases/tzcode2014e.tar.gz ftp://ftp.iana.org/tz/releases/tzdata2014e.tar.gz The files are also available via HTTP as follows: http://www.iana.org/time-zones/repository/releases/tzcode2014e.tar.gz http://www.iana.org/time-zones/repository/releases/tzdata2014e.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 aac77e9d1df743a04b4983332831e86f4fbfbf67 dated Thu Jun 12 21:53:52 2014 -0700 and tagged '2014e' 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 iQIcBAABAgAGBQJTmoSUAAoJEO2X6Q5iqn40exIP/00fVayM1PgvaYJikJlpzaNd 5wHaGSlhALcf6C/T/yLk1AuFy/EtSSqC7CNVvjlxdR/nV8oz6rv5toOdEh0C37YI yzfX7J5eta8r5CaKd5HBGhZEPuFil39d0Wnm2kLeCTiH9iGL3kGIwbLacaUw72vp RNHfL9zfd9VqmbWB2vAKI0sG+IsofzUIvxGvCYsyGavDQZCFBB3c/aB9uzbfDyHv nsfW7MjaiqH1+aofgeH+S+g0REepVoyGEz1kNs24x49bSvoGLWdHNJYkcJTNqVIW 7tNGgwW3rTOHXw8NxVQut8qTdjLyKylub4t7sPHsxnKUuMxkrBbwMm7xTGYU5TRj 0sUXKQbL5DA+ypkqQOiLXzj9Vb0A3cYQi7FoAYEX4AGu3ERi89xKcA8QRFVzPqTD Ox+RqL3AdYjkg6VETLhagvT0WWf6dAg4jo6cg2l09gXlGS1YWcxrYNDO7EDKyhHU omsYFBoNPbTvTAWQCK+BT8V/IovDZzQ8RmifpnSjnPiag9grHwtBPKw9rMDx9YUy kN1HFzjuOAYouG8boybvp2cUwW982EzMGqvXCgoE6PqnLk9UOt7DS82DAKg9+RC7 nHSux3PmWn+Pcn72ujjc++8iTDzxEUg89mjUpwz8PvOxvX/gF4Xx1+6ClprXKbrh gRchtCRan+Tbg0cxD1r+ =E5bP -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJTmoSVAAoJEO2X6Q5iqn40MYEP/AxCXIrZeLT3sACmBT5g10HZ FLAYeImASXIZGpdysq9esofCa3eoeeDVCYQqRt6EeUBvh1b6dVdn2rT5rkMTwaMw Bm3Iky5gP2xybEfCYALcq6VyagJX7hi9GRoVadCxdCeb3tl1dDYAq1isjNf4UvxB Qo6sHmyZ6cCdpgfOz4fWiDsfpP0t59eo0/cW5U2NBW95l1FtuWFiCvUvfjtNl9R2 bZiN4REb27WQqkHFFzgMd2gVb7DqpiGzGkFYl84ZxgLVvQaDnIcsKVLv/JN+shNJ qOPXuE40H+x/BJBrtCvzZFamuIraG0z7tNuQuX5CpRbn0dx7/EBAwagSm3qcWAqn YNopvJXCL+9jdkJXNTX1Xq+q7uNDrmYFzSwhMzAXoTB4NOpxCB1vaTpg3O0ztPPO 6x6316e5oyQK1PGRg/zJzvZ5dLF2jwexJORJ4aGvFRIlTfUtgIGoIO60cHV3HK7a aNAp+T2eGqA2wS4MPCH7rSCw+wMaRdRwajOhv9mEgL9MiCecEyAMbUjvJEXF74oS jAAC+bjmHuoqv3Pex/VyQ7t8FUpkKKr+Ku+QQCRleFeMTMR5JYK+cDGimfIq4GZ7 vmyAhl7MgUTpEdv5deEtaRT9AdNjAkWGQtzUwIzK85/DNVq8TwRhhBKFMm7Uunxv kcOYT3br9Bq1pg6YnUU1 =dB4k -----END PGP SIGNATURE----- _______________________________________________ tz-announce mailing list tz-announce(a)iana.org https://mm.icann.org/mailman/listinfo/tz-announce

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Time Zone Update Date of Egypt
by Ashish Tewari June 12, 2014

June 12, 2014

Hi Team, This is to request to release fresh tzupdate package for DST change during the period of Ramadan on the basis of the below page on Official Facebook page for the Egyptian Cabinet. https://www.facebook.com/Egyptian.Cabinet.Of.Ministers/photos/a.20213898979… الصفحة الرسمية لرئاسة مجلس الوزراء المصرى<https://www.facebook.com/Egyptian.Cabinet.Of.Ministers?fref=photo> وفيما يتعلق بالتوقيت الصيفى، فمن المقرر أن يبدأ العمل به فى تمام الساعة الثانية عشرة مساء اليوم الخميس 15/5/2014، على أن يتم وقف العمل به فى الساعة الثانية عشر مساء يوم الخميس 26/6/2014، ويعاد العمل بالتوقيت الصيفى مجدداً عقب انتهاء شهر رمضان،وذلك فى تمام الساعة الثانية عشر مساء يوم الخميس 31/7/2014 English Translation: Official page of the Presidency of the Council of Ministers Egyptian With regard to daylight saving time, it is scheduled to begin its work at exactly twelve o'clock this evening, Thursday, 15/05/2014, to be suspended by the twelve o'clock on the evening of Thursday, 26/06/2014, and re-work again after daylight saving time the end of the month of Ramadan, and will start at twelve o'clock on the evening of Thursday, 07/31/2014. Thanks & Regards Ashish Tewari

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Egypt and Morocco Ramadan changes
by Patsy Franklin June 9, 2014

June 9, 2014

Hi, Will there be an updated release soon for the recent changes to Ramadan in Egypt and Morocco? Thanks, Patsy

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Russian parliament to discuss re-introduction of ‘winter time’ June 10
by Andrew Paprocki June 9, 2014

June 9, 2014

http://en.itar-tass.com/russia/735376

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Weeks in Daylight Saving Time
by Hank W. June 8, 2014

June 8, 2014

I just answered a question on Wiki Answers regarding how many weeks are in Daylight Saving Time. I dont know if any of you ever figured this out, so I thought some of you might find this interesting. Hank W. of Austin The duration of Daylight Saving Time (a.k.a. Summer Time) ranges from a low of 12 weeks in Fiji to a high of 34 weeks in North America and Chile (for reference, 3 months = 13 weeks, 6 months = 26 weeks, and 9 months = 39 weeks).... 34 weeks/year : * United States * Canada * Cuba * Haiti * Bermuda * Bahamas * Turks & Caicos * part of Greenland * Saint-Pierre & Miquelon * parts of Mexico 33 or 34 weeks/year : * Chile * Easter Island * part of Antarctica 30½ or 31½ weeks/year in Israel 30 or 31 weeks/year : * Europe, except Russia, Belarus and part of Ukraine * Azerbaijan * Turkey * Cyprus * Jordan * Lebanon * Syria * Namibia * most of Greenland * Azores * Canary Islands * Madeira Islands 29 or 30 weeks/year in most of Mexico 27 or 28 weeks/year : * New Zealand * Chatham Islands * Samoa * part of Antarctica 26½ weeks/year in Iran 26 or 27 weeks/year in Australia 25½ to 31 weeks/year in Morocco and Western Sahara 25 or 26 weeks/year in the Palestinian Territories 24 or 25 weeks/year in Paraguay 22 or 23 weeks/year in Uruguay 17½ to 22 weeks/year in Egypt 17 to 19 weeks/year in Brazil 12 or 13 weeks/year in Fiji

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Morocco DST Interruption during Ramadan 2014
by Milamber June 6, 2014

June 6, 2014

(cancel & replace) Hello, The Moroccan government has recently announced that the country will return to standard time at 3:00 a.m. (03:00) on Saturday, June 28, 2014 local time. Clocks will be turned back one hour. DST will resume again at 2:00 a.m. (02:00) on Saturday, August 2, 2014, when one hour will be added again to the local time. Source (french): http://www.mmsp.gov.ma/fr/actualites.aspx?id=586 Milamber Note: Current prediction in tzdata Rule Morocco 2014 only - Jun 29 3:00 0 - Rule Morocco 2014 only - Jul 29 2:00 1:00 S

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Morocco DST Interruption during Ramadan 2014
by Milamber June 5, 2014

June 5, 2014

Hello, The Moroccan government has recently announced that the country will return to standard time at 3:00 a.m. (03:00) on Saturday, June 6, 2014 local time. Clocks will be turned back one hour. DST will resume again at 2:00 a.m. (02:00) on Saturday, August 2, 2014, when one hour will be added again to the local time. Source (french): http://www.mmsp.gov.ma/fr/actualites.aspx?id=586 Milamber Note: Current prediction in tzdata Rule Morocco 2014 only - Jun 29 3:00 0 - Rule Morocco 2014 only - Jul 29 2:00 1:00 S

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Yacht crew member killed after daylight-saving error
by Paul Eggert June 5, 2014

June 5, 2014

Here's a sobering reminder of one of the downsides of daylight saving time. Last month the Australian Transport Safety Bureau published its investigation into a fatal accident on 2013-02-08 at 13:45 +1100, as the motor yacht Calliope transited the Glebe Island Bridge in Rozelle Bay, Sydney Harbour. When the ship's master calculated tidal conditions for the transit, he determined that low tide would be at 13:20 local time. However, he forgot to allow for daylight saving time, and the actual low tide was at 14:20. The miscalculation contributed to a botched transit; as the crew positioned a fender to control contact with the bridge structure, an assistant engineer was caught between the yacht's fashion plate and a bridge-mounted fender, was pulled overboard, and died. Crane E. Crewman crushed to death in yacht crash after captain misjudged tide times when the clocks changed. Daily Mail, 2014-05-12. http://www.dailymail.co.uk/news/article-2626707/Crewman-crushed-death-yacht… Australian Transport Safety Bureau. Fatality on board the motor yacht Calliope. Marine Occurrence Investigation 297-MO-2013-003, 2014-05-12. http://www.atsb.gov.au/publications/investigation_reports/2013/mair/297-mo-…

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Public key for time-zone ftp site
by Skelton, Terry June 5, 2014

June 5, 2014

Greetings, Can someone point me to the public key that is used to sign the tzdata2014*.tar.gz files on the public FTP site? I have a process that will attempt to verify any new tzdata file using the corresponding ASC signature file, but I need to include the public key that was used to sign the file. Thank you, Terry Skelton Senior Lead Software Developer T +1 303 397 5917 M +1 720 217 6814 terry.skelton(a)travelport.com<mailto:terry.skelton@travelport.com> www.travelport.com<http://www.travelport.com/> [redefining_email_signature]<http://www.travelport.com/vision> This message has been scanned for malware by Websense. www.websense.com

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2014 DST changes in Egypt, again
by Imed Chihi June 5, 2014

June 5, 2014

Hi all. We have finally "located" a precise official reference about the DST changes in Egypt. The Ministers Cabinet decision is explained at http://www.cabinet.gov.eg/Media/CabinetMeetingsDetails.aspx?id=347 For some reason, this (Arabic) site is not accessible outside Egypt, but the page says: "وفيما يتعلق بالتوقيت الصيفى، فمن المقرر أن يبدأ العمل به فى تمام الساعة الثانية عشرة مساء اليوم الخميس 15/5/2014، على أن يتم وقف العمل به فى الساعة الثانية عشر مساء يوم الخميس 26/6/2014، ويعاد العمل بالتوقيت الصيفى مجدداً عقب انتهاء شهر رمضان،وذلك فى تمام الساعة الثانية عشر مساء يوم الخميس "31/7/2014. .. which translates into: "With regard to daylight saving time, it is scheduled to take effect at exactly twelve o'clock this evening, Thursday, 15 MAY 2014, to be suspended by twelve o'clock on the evening of Thursday, 26 JUN 2014, and re-established again at the end of the month of Ramadan, at twelve o'clock on the evening of Thursday, 31 JUL 2014." This statement has been reproduced by other (more accessible) sites: 1. http://elgornal.net/news/news.aspx?id=4699258 2. http://www.masrawy.com/news/egypt/politics/2014/may/15/5901668.aspx?ref=mor… 3. http://dostorasly.com/news/view.aspx?cdate=15052014&id=7e25a82b-6e9e-473a-8… 4. https://www.facebook.com/Egyptian.Cabinet.Of.Ministers/photos/a.20213898979… Since release 2014c was based on the assumption that the DST suspension would take place on 28 JUN 2014, I think that we'll need to make yet another adjustment to Africa/Cairo. -Imed

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[PATCH 2/2] * tz-link.htm, NEWS: jCal is now RFC 7265. Mention PTP and the
by Paul Eggert June 5, 2014

June 5, 2014

draft CalDAV extension. Update URLs for TSP, TZInfo, IATA. Remove stale pointers to World Time Explorer and WORLDTIME. --- NEWS | 6 ++++++ tz-link.htm | 33 +++++++++++++++++---------------- 2 files changed, 23 insertions(+), 16 deletions(-) diff --git a/NEWS b/NEWS index 265f6b3..af68da4 100644 --- a/NEWS +++ b/NEWS @@ -15,6 +15,12 @@ Unreleased, experimental changes "VLASST" has been repaired to be "VLAST" for Vladivostok summer time in 1991. (Thanks to Hank W. for reporting the problems.) + Changes affecting commentary + + tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the + draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and + removes stale pointers to World Time Explorer and WORLDTIME. + Release 2014d - 2014-05-27 21:34:40 -0700 diff --git a/tz-link.htm b/tz-link.htm index 04919a9..15ccb37 100644 --- a/tz-link.htm +++ b/tz-link.htm @@ -8,7 +8,7 @@ <meta http-equiv="Content-type" content='text/html; charset="US-ASCII"'> <meta name="DC.Creator" content="Eggert, Paul"> <meta name="DC.Contributor" content="Olson, Arthur David"> -<meta name="DC.Date" content="2014-05-27"> +<meta name="DC.Date" content="2014-06-04"> <meta name="DC.Description" content="Sources of information about time zones and daylight saving time"> <meta name="DC.Identifier" @@ -196,10 +196,11 @@ covers time zone data; see its VTIMEZONE calendar component. The iCalendar format requires specialized parsers and generators; a variant <a href="http://tools.ietf.org/html/rfc6321">xCal</a> -(Internet RFC 6321) uses +(Internet <abbr>RFC</abbr> 6321) uses <a href="http://www.w3.org/XML/"><abbr -title="Extensible Markup Language">XML</abbr></a> format, and a draft variant -<a href="http://datatracker.ietf.org/doc/draft-ietf-jcardcal-jcal/">jCal</a> +title="Extensible Markup Language">XML</abbr></a> format, and a variant +<a href="http://tools.ietf.org/html/rfc7265">jCal</a> +(Internet <abbr>RFC</abbr> 7265) uses <a href="http://www.json.org/"><abbr title="JavaScript Object Notation">JSON</abbr></a> format. <a href="http://calconnect.org/">CalConnect, The Calendaring and Scheduling @@ -209,8 +210,12 @@ TIMEZONE Problems and Recommendations</a> offers guidelines and recommendations for the use of VTIMEZONE and <code><abbr>tz</abbr></code>.</li> <li>CalConnect's <a href="http://calconnect.org/tc-timezone.shtml">TIMEZONE Technical Committee</a> has developed -a <a href="http://tools.ietf.org/html/draft-douglass-timezone-service-08">draft -timezone service protocol</a>. The committee's earlier <a +a <a href="http://tools.ietf.org/html/draft-douglass-timezone-service-11">draft +timezone service protocol</a> along with a <a +href="http://tools.ietf.org/html/draft-daboo-caldav-timezone-ref-01">draft +extension</a> to the <a href="http://caldav.calconnect.org/">CalDAV +calendar access protocol</a> to allow time zone information to be exchanged +by reference. The committee's earlier <a href="http://calconnect.org/publications/timezoneregistryandservicerecommendation…">Timezone Registry and Service Recommendations</a> discusses a strategy for defining and deploying a time zone @@ -284,7 +289,7 @@ Dates. It is freely available under the Apache License.</li> Definitions for Python</a> compiles <code><abbr>tz</abbr></code> source into <a href="http://python.org/">Python</a>. It is freely available under a <abbr>BSD</abbr>-style license.</li> -<li><a href="http://tzinfo.rubyforge.org/">TZInfo – +<li><a href="http://tzinfo.github.io/">TZInfo – Ruby Timezone Library</a> compiles <code><abbr>tz</abbr></code> source into <a href="http://www.ruby-lang.org/en/">Ruby</a>. @@ -375,9 +380,6 @@ href="http://veladg.com/velaterra.html">VelaTerra</a> is a Mac <abbr>OS X</abbr> program. Its developers <a href="http://veladg.com/tzoffer.html">offer free licenses</a> to <code><abbr>tz</abbr></code> contributors.</li> -<li><a -href="http://worldtimeexplorer.com/">World Time Explorer</a> is a -Microsoft Windows program.</li> </ul> <h2>Other time zone databases</h2> <ul> @@ -391,10 +393,6 @@ for the U.S.</a>, and <a href="http://www.astrocom.com/astrology/books/international-atlas">one for other locations</a>) by <a href="http://astrocom.com/">Astro Computing Services</a>.</li> -<li><a href="http://worldtime.com/">WORLDTIME: interactive atlas, -time info, public holidays</a> -contains information on local time, sunrise and sunset, -and public holidays in several hundred cities around the world.</li> <li><a href="http://worldtimeserver.com/">World Time Server</a> is another time zone database.</li> <li><a href="http://tycho.usno.navy.mil/tzones.html">World Time Zones</a> @@ -404,7 +402,7 @@ for the <code><abbr>usno</abbr>*</code> files in the <code><abbr>tz</abbr></code> distribution.</li> <li>The <a href="http://www.iata.org/publications/Pages/ssim.aspx">Standard Schedules Information Manual</a> of the -<a href="http://iata.org/index.htm">International Air Transport +<a href="http://iata.org/">International Air Transport Association</a> gives current time zone rules for airports served by commercial aviation.</li> <li>Some Microsoft Windows versions contain time zone information in @@ -482,7 +480,7 @@ common.</li> </ul> <h2>Civil time concepts and history</h2> <ul> -<li><a href="http://physics.nist.gov/GenInt/Time/time.html">A +<li><a href="http://www.nist.gov/pml/general/time/index.cfm">A Walk through Time</a> surveys the evolution of timekeeping.</li> <li><a href="http://webexhibits.org/daylightsaving/">About Daylight @@ -584,6 +582,9 @@ title="Network Time Protocol">NTP</abbr>: The Network Time Protocol</a> discusses how to synchronize clocks of Internet hosts.</li> +<li>The <a href="http://www.nist.gov/el/isd/ieee/ieee1588.cfm">Precision +Time Protocol</a> (IEEE 1588) can achieve submicrosecond clock +accuracy on a local area network.</li> <li><a href="http://tools.ietf.org/html/rfc4833">Timezone Options for <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr></a> -- 1.9.1

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[PATCH 1/2] * europe, northamerica: Update Willett URL.
by Paul Eggert June 5, 2014

June 5, 2014

--- europe | 2 +- northamerica | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/europe b/europe index ca0f165..7ae96ff 100644 --- a/europe +++ b/europe @@ -30,7 +30,7 @@ # which I found in the UCLA library. # # William Willett, The Waste of Daylight, 19th edition -# <http://cs.ucla.edu/~eggert/Daylight_Savings_William_Willett.pdf> +# <http://cs.ucla.edu/~eggert/The-Waste-of-Daylight-19th.pdf> # [PDF] (1914-03) # # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94 diff --git a/northamerica b/northamerica index d51a7e1..9660a46 100644 --- a/northamerica +++ b/northamerica @@ -1019,9 +1019,9 @@ Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), # which I found in the UCLA library. # -# <a href="http://www.pettswoodvillage.co.uk/Daylight_Savings_William_Willett.pdf"> # William Willett, The Waste of Daylight, 19th edition -# </a> (1914-03) +# <http://cs.ucla.edu/~eggert/The-Waste-of-Daylight-19th.pdf> +# [PDF] (1914-03) # # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94 # <http://www.jstor.org/stable/1774359>. -- 1.9.1

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changes to the TZ database over versions
by Joris Van den Bogaert June 2, 2014

June 2, 2014

Hello, I'm investigating how to deal with timezones for an application that will get to processes billions of timestamped events, generated in just about any part of the world. Timestamps are in local time (without timezone, only post- and other codes) and we need them in UTC time. Money is involved, so it is of critical importance that intervals between events are calculated correctly. There's two steps involved in this: - given some geo data and some lookup tables from a database like geopostcodes.com, determine the timezone id - convert to UTC using the latest Time Zone Database Development wise it's fairly simple to automate. We're using joda time and this library allows to plugin a custom Timezone provider which can then use the latest TZ database. However, I see some issues: 1) I noticed that certain timezone ids are deleted in newer versions: tzdata2014a contains America/Shiprock, newer versions don't. This may lead to issues whenever recalculations are needed in the future. What is the likelyhood that ids are deleted? 2) Do rules from the past ever change? In other words, can we assume that a recalculation of a past local date to a UTC date will always yield the same result with newer versions of the TZ database? If so, is this a common thing and would one then recommend saving the TZ database version with which the conversion was performed along with the UTC date? Hope one of you can shed some light! Cheers, Joris

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Asia/Vladivostok
by Hank W. June 1, 2014

June 1, 2014

In the europe file, regarding Zone Asia/Vladivostok, in the line shown below, is "VLA%sST" a typo? Should it not be "VLA%sT"? 9:00 Russia VLA%sST 1992 Jan 19 2:00s Hank W.

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Europe/Moscow
by Hank W. May 31, 2014

May 31, 2014

For the period from 1919 Jul 1 2:00 to 1922 Oct in the Europe/Moscow zone the Europe file says to apply the Russia rules with the format MSK/MSD: 2:30:48 Russia %s 1919 Jul 1 2:00 3:00 Russia MSK/MSD 1922 Oct However, the Russia rules show three different offsets during 1921, 0, +1 and +2: Rule Russia 1919 only - Aug 16 0:00 0 - Rule Russia 1921 only - Feb 14 23:00 1:00 S Rule Russia 1921 only - Mar 20 23:00 2:00 M # Midsummer Rule Russia 1921 only - Sep 1 0:00 1:00 S Rule Russia 1921 only - Oct 1 0:00 0 -

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Cook Islands
by Hank W. May 30, 2014

May 30, 2014

In the australasia file, The Cook Islands are under the heading of Australia. However, Wikipedia identifies The Cook Islands as a country in free association with New Zealand.

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Chatham Islands
by Hank W. May 30, 2014

May 30, 2014

In the New Zealand part of the australasia file is the note "Since 1957 Chatham has been 45 minutes ahead of NZ, but there's no convenient notation for this so we must duplicate the Rule lines." However, the Chatham Islands and the mainland always change their clocks at the same time, and there is a convenient notation for the time: 14:00u.

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Morocco
by Hank W. May 30, 2014

May 30, 2014

I noticed that the africa file shows that Morocco will be switching to Summer Time early on 30th October 2038 and switching back to standard time 24 hours later. I thought that might be an oversight because it's hard to believe.

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[tz-announce] 2014d release of tz code and data available
by Paul Eggert May 28, 2014

May 28, 2014

The 2014d release of the tz code and data is available. No substantive changes were made to the tz data, just to the code and documentation. This release reflects the following changes, which were either circulated on the tz mailing list or are relatively minor technical or administrative changes: Changes affecting code zic no longer generates files containing time stamps well before the Big Bang. This works around GNOME bug 730332 <https://bugzilla.gnome.org/show_bug.cgi?id=730332>. (Thanks to Leonardo Chiquitto for reporting the bug, and to Arthur David Olson and James Cloos for suggesting improvements to the fix.) Changes affecting documentation tz-link.htm now mentions GNOME. Here are links to the release files: ftp://ftp.iana.org/tz/releases/tzcode2014d.tar.gz ftp://ftp.iana.org/tz/releases/tzdata2014d.tar.gz The files are also available via HTTP as follows: http://www.iana.org/time-zones/repository/releases/tzcode2014d.tar.gz http://www.iana.org/time-zones/repository/releases/tzdata2014d.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 a91cc14d7fe3ef7710e02dcc0da649fdb3bdc3cc dated Tue May 27 21:34:40 2014 -0700 and tagged '2014d' 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 iQIcBAABAgAGBQJThWf4AAoJEO2X6Q5iqn401mgP/0mwb5ijJnOqWb82X4SQmKGW 8GR3HHgRv8N0jDfd1+uOSQXnZ3NptayJWjGx6eBFssCTnmkaGnDbJ/H5Cs3DKyo3 0vekKxJ59MeK3Aw4leJ7bx+fUvzv3yCa+0zT3kkFyYax3mWmX76bsBorU1OUTT0O frTrXEveyA8bibeDNsMISyO8D//S67mv6/nu/wbEiyxufKuizBahfpyncC+o0R8i hkIOcFUHS4X925ezwn7MO5GYXwJ8n7Ho3SWnyDSqBwRt3CRBUDXwz6CkAjZUgHcH zuwSmKDjBBuHXRZ2zGkadr3UBY5rD2HabR1EzwP0hiDNQbFdiuKWmxolHfVy5vVn 5gakHRqsqOYVAkHco+FLpwZO230KO9VWyDpQyvKMZlHX2RYITXL6FYurh7dZxlgp NHcN9ZBOEA0A3lgNTrH5OCocWVGXqqY3dc14gmQLqe9slZdIu+5flfajS17HlYec 1sXRiomso/aVVUaPHFhtyMtuOFLCepFLBg63dQHxYoCfHLGSydbWUB/JcAnMfS8P YOqzovi+FPq6pdyG/q/PUI7FyEz/XZVyc6VazZyF7sqyE9o6JFPYGu7TtyXDNERd Ks3chCsb4tiQ4Wxlh7X8A9HWtu9nCbrJXlOSbWOSbntcbT/tcXClyGi7jkSLt0Aw Gr/4LYioKmoj5TyJ7kDV =TncV -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJThWf4AAoJEO2X6Q5iqn40NTgP/21cbRGXRSc+18Yj7sEQ+fs3 g0zJnUEeZX2Wh7dPnpAH8g8/+htF+LhAS6R1Da8GQZqhHg8NnWplvy5YQuW4oMI8 62Cq+fq8FtGzd12BZSbQc71DItPptuDF6Gnx6S97V4LFxwbiehgha0YTQ+5IUWn2 GOUZRCvr/uhlP96Y0dlgcCRUZxBbxSyLUQBDPlikRegALlgchSm3EU4E2tHMHPDi EhKINic81UKiBPLLWGoaCQXSnOHCyeqKQJJqH9PXqKykCJMeCDHAbUBdo7vRhYx/ 7aHP1javXYMDH1U9C3SqQtIAo9zCObLPtLASYL+KYgJquPcGX+YobuFnb97x6sAH lF0FlCjRJBwdq6oZ/H3NCCFHIMmrVVj+KM0DlCSqUsp9Pld9BUd3F5EK2RGvF3b4 4G58S6Ob+4HDorHqLFfWdsIhRFF3Jr2AWH1VCVPkVxbYBtH7udeDZmL8Z7NgxGSA h9Gwy3wngfLpaD3NCtSDUW0jNc5Yvg9BNw2nwa/VA2A2/ckMjoRe9fGr1WPaY87J 6Rzp57X8l5OxLu2RI54tKioHVIrTfbejXQpISFtE79b4kCmggLTPU1dUWo7yDJvS 7vX6Bd0BLYyrIQKjoTQ30YQpg477lyaBMVS0P8AIl4FSTS7kVGpPaK5lUDANssRB l9vEDH3V46FN0whnKHNe =wEHb -----END PGP SIGNATURE----- _______________________________________________ tz-announce mailing list tz-announce(a)iana.org https://mm.icann.org/mailman/listinfo/tz-announce

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tzcode-2014c breaks applications that use the binary tz files
by Leonardo Chiquitto May 27, 2014

May 27, 2014

Hi, After updating to 2014c, we've received a couple of reports of applications that started to misbehave (show wrong times). One example is the clock applet from Gnome3 (the one in the panel) which, on my machine, shows the time with a -7 minutes offset. Reverting these recent changes from zic(1) resolves the problem: 7fb077a9f zic: improve handling of low-valued time stamps 2586e998c zic: revert Macquarie-specific changes Leonardo

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Politics of TZ changes
by Matt Johnson May 20, 2014

May 20, 2014

The recent changes in Egypt have me thinking. How is it that there isn't some sort of international treaty, law, or agreement about how much notice a government needs to give when making time zone changes? I know almost nothing about international law, but aren't there organizations that coordinate things like trade and commerce that would have something to say about this? It's seems strange to me that we can all agree to let the ITU coordinate UTC while time zones don't seem to be coordinated by any official legal body. Of course, it makes sense that each government should retain its sovereign right to set its time zones as it pleases - but surely something could be done about the process as to which it enacts those changes? I think we can all agree that having a spokesperson give vague details in a media article a week beforehand is not the right way to do things. It's also concerning that people tend to set deadlines based on the date of the change. Not only should time be allowed for the change to be incorporated into the data and distributed to systems, but also people should think about all of the ways that future activities are scheduled based on current knowledge of the tz rules. For example, say you have a weekly scheduled conference call between Egypt and somewhere else in the world. At the moment the Egyptian government announced the change, some of your meeting times became inaccurate. With the change sent out today (2 days before the change), it's not very likely you would receive this update in time to adjust your meeting time. But even if you did get the update, it's quite likely that you would have to reschedule due to conflict with another appointment. For some, this might be an inconvenience. But for others, it could make or break a deal. Cumulatively this could have an economic impact, so one would think it would be in a countries own best interest to give sufficient notice. Perhaps if there were a set of rules, they might be unenforceable and some cases would still slip through the cracks. But at least if there were guidelines defined by some sort of official international governance - we might have a fighting chance. Please share your thoughts and opinions on this topic. What would these rules/guidelines look like? Who might we lobby to enact such a thing?

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Balancing machine for Pump, Roller, Textile, Centrifuge 2014-05-17 05:27:41
by Sales.83＠qq.com May 16, 2014

May 16, 2014

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