- tz - lists.iana.org

time zones
by Alison Hili July 16, 2009

July 16, 2009

Hi! I found your address on the internet. Could you help me please? I need to know the different in time zones between Malta and Toronto in Canada please. If in Malta it is Thursday 16th July and the time is 8.00pm, what time is in Toronto, Canada please? Thanks very much for your help. Regards, Alison.

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proposed time zone package changes
by Arthur David Olson July 14, 2009

July 14, 2009

Here are proposed time zone package changes, with summary information followed by the actual changes. If no problems are found, these will appear on the ftp site in nine days. --ado * zic.c Do not end a binary file with a POSIX-style time zone string for locations that end up in permanent DST (thanks to Andreas Schwab). * asia Arbitrarily cut off Dhaka DST at end of 2009 (so that a POSIX-style time zone string can appear in the Dhaka binary file, and for the benefit of systems with old glibc reimplementations of the time zone library that don't handle permanent DST correctly). Note that another change will be needed once the real end date for DST in Dhaka is known. * africa Change Mauritius to reflect that 2008-2009 DST experiment is not repeated (and to change end of DST in 2009 from 2:00 standard time to 2:00 local time) (thanks to Steffen Thorsen). * europe Update URL for Directive 2000/84/EC on summer-time arrangements (thanks to Colin Watson and Ian Jackson). * leapseconds Change "no leap second" comment (no leap second at end of 2009). * tz-art.htm Add notes on "A Matter of Life and Death" (thanks to Dave Cantor). * tz-link.htm Remove seemingly obsolete public.planetmirror.com/pub/timezone link (thanks to Nathan Stratton Treadway). diff -c old/africa new/africa *** old/africa Sun May 17 14:32:58 2009 --- new/africa Sat Jul 11 12:07:03 2009 *************** *** 1,5 **** # <pre> ! # @(#)africa 8.21 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)africa 8.22 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 502,512 **** # http://www.gov.mu/portal/goc/assemblysite/file/bill2708.pdf # </a> # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mauritius 1982 only - Oct 10 0:00 1:00 S Rule Mauritius 1983 only - Mar 21 0:00 0 - ! Rule Mauritius 2008 max - Oct lastSun 2:00s 1:00 S ! Rule Mauritius 2009 max - Mar lastSun 2:00s 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis 4:00 Mauritius MU%sT # Mauritius Time --- 502,534 ---- # http://www.gov.mu/portal/goc/assemblysite/file/bill2708.pdf # </a> + # From Steffen Thorsen (2009-06-05): + # According to several sources, Mauritius will not continue to observe + # DST the coming summer... + # + # Some sources, in French: + # <a href="http://www.defimedia.info/news/946/Rashid-Beebeejaun-:-%C2%AB-L%E2%80%99heu…"> + # http://www.defimedia.info/news/946/Rashid-Beebeejaun-:-%C2%AB-L%E2%80%99heu… + # </a> + # <a href="http://lexpress.mu/Story/3398~Beebeejaun---Les-objectifs-d-%C3%A9conomie-d-…"> + # http://lexpress.mu/Story/3398~Beebeejaun---Les-objectifs-d-%C3%A9conomie-d-… + # </a> + # + # Our wrap-up: + # <a href="http://www.timeanddate.com/news/time/mauritius-dst-will-not-repeat.html"> + # http://www.timeanddate.com/news/time/mauritius-dst-will-not-repeat.html + # </a> + + # From Arthur David Olson (2009-07-11): + # The "mauritius-dst-will-not-repeat" wrapup includes this: + # "The trial ended on March 29, 2009, when the clocks moved back by one hour + # at 2am (or 02:00) local time..." + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Mauritius 1982 only - Oct 10 0:00 1:00 S Rule Mauritius 1983 only - Mar 21 0:00 0 - ! Rule Mauritius 2008 only - Oct lastSun 2:00 1:00 S ! Rule Mauritius 2009 only - Mar lastSun 2:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis 4:00 Mauritius MU%sT # Mauritius Time diff -c old/asia new/asia *** old/asia Mon Jun 15 06:43:59 2009 --- new/asia Sat Jul 11 12:07:03 2009 *************** *** 1,5 **** # <pre> ! # @(#)asia 8.35 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)asia 8.36 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 172,177 **** --- 172,183 ---- # # No DST end date has been announced yet. + # From Arthur David Olson (2009-07-11): + # Arbitrarily end DST at the end of 2009 so that a POSIX-sytle time zone string + # can appear in the Dhaka binary file and for the benefit of old glibc + # reimplementations of the time zone software that mishandle permanent DST. + # A change will be required once the end date is known. + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Dhaka 6:01:40 - LMT 1890 5:53:20 - HMT 1941 Oct # Howrah Mean Time? *************** *** 180,186 **** 6:30 - BURT 1951 Sep 30 6:00 - DACT 1971 Mar 26 # Dacca Time 6:00 - BDT 2009 Jun 19 23:00 # Bangladesh Time ! 6:00 1:00 BDST # Bhutan # Zone NAME GMTOFF RULES FORMAT [UNTIL] --- 186,193 ---- 6:30 - BURT 1951 Sep 30 6:00 - DACT 1971 Mar 26 # Dacca Time 6:00 - BDT 2009 Jun 19 23:00 # Bangladesh Time ! 6:00 1:00 BDST 2010 ! 6:00 - BDT # Bhutan # Zone NAME GMTOFF RULES FORMAT [UNTIL] diff -c old/europe new/europe *** old/europe Sun May 17 14:32:59 2009 --- new/europe Sat Jul 11 12:09:02 2009 *************** *** 1,5 **** # <pre> ! # @(#)europe 8.21 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)europe 8.22 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 459,465 **** Rule EU 1981 max - Mar lastSun 1:00u 1:00 S Rule EU 1996 max - Oct lastSun 1:00u 0 - # The most recent directive covers the years starting in 2002. See: ! # <a href="http://europa.eu.int/eur-lex/en/lif/dat/2000/en_300L0084.html"> # Directive 2000/84/EC of the European Parliament and of the Council # of 19 January 2001 on summer-time arrangements. # </a> --- 459,465 ---- Rule EU 1981 max - Mar lastSun 1:00u 1:00 S Rule EU 1996 max - Oct lastSun 1:00u 0 - # The most recent directive covers the years starting in 2002. See: ! # <a="http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:32000L0084:EN:N…"> # Directive 2000/84/EC of the European Parliament and of the Council # of 19 January 2001 on summer-time arrangements. # </a> diff -c old/leapseconds new/leapseconds *** old/leapseconds Sun May 17 14:32:59 2009 --- new/leapseconds Sat Jul 11 12:07:04 2009 *************** *** 1,5 **** # <pre> ! # @(#)leapseconds 8.8 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)leapseconds 8.9 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 56,68 **** # SERVICE DE LA ROTATION TERRESTRE # OBSERVATOIRE DE PARIS # 61, Av. de l'Observatoire 75014 PARIS (France) ! # Tel. : 33 (0) 1 40 51 22 29 # FAX : 33 (0) 1 40 51 22 91 # Internet : services.iers(a)obspm.fr # ! # Paris, 15 January 2009 # ! # Bulletin C 37 # # To authorities responsible # for the measurement and --- 56,68 ---- # SERVICE DE LA ROTATION TERRESTRE # OBSERVATOIRE DE PARIS # 61, Av. de l'Observatoire 75014 PARIS (France) ! # Tel. : 33 (0) 1 40 51 22 26 # FAX : 33 (0) 1 40 51 22 91 # Internet : services.iers(a)obspm.fr # ! # Paris, 4 July 2009 # ! # Bulletin C 38 # # To authorities responsible # for the measurement and *************** *** 70,76 **** # # INFORMATION ON UTC - TAI # ! # NO positive leap second will be introduced at the end of June 2009. # The difference between Coordinated Universal Time UTC and the # International Atomic Time TAI is : # --- 70,76 ---- # # INFORMATION ON UTC - TAI # ! # NO positive leap second will be introduced at the end of December 2009. # The difference between Coordinated Universal Time UTC and the # International Atomic Time TAI is : # *************** *** 82,87 **** # will be no time step at the next possible date. # # Daniel GAMBIS ! # Head ! # Earth Orientation Center of the IERS # Observatoire de Paris, France --- 82,87 ---- # will be no time step at the next possible date. # # Daniel GAMBIS ! # Director ! # Earth Orientation Center of IERS # Observatoire de Paris, France diff -c old/tz-art.htm new/tz-art.htm *** old/tz-art.htm Sun May 17 14:44:05 2009 --- new/tz-art.htm Sat Jul 11 12:07:04 2009 *************** *** 9,15 **** <body> <h1>Time and the Arts</h1> <address> ! @(#)tz-art.htm 8.12 </address> <p> This file is in the public domain, so clarified as of --- 9,15 ---- <body> <h1>Time and the Arts</h1> <address> ! @(#)tz-art.htm 8.13 </address> <p> This file is in the public domain, so clarified as of *************** *** 353,358 **** --- 353,369 ---- premonition in the "We Had a Dream" episode of "Medium" (originally aired 2007-02-28). </li> + <li> + In the 1946 "A Matter of Life and Death," + there is a reference to British Double Summer Time. + The time does not play a large part in the plot; + it's just a passing reference to the time when one of the + characters was supposed to have died (but didn't). + The IMDb page is at + <a href="http://us.imdb.com/title/tt0038733/"> + http://us.imdb.com/title/tt0038733/ + </a>. (Dave Cantor) + </li> </ul> <hr> <ul> diff -c old/tz-link.htm new/tz-link.htm *** old/tz-link.htm Sat Jun 6 08:27:24 2009 --- new/tz-link.htm Sat Jul 11 12:07:04 2009 *************** *** 18,24 **** <body> <h1>Sources for Time Zone and Daylight Saving Time Data</h1> <address> ! @(#)tz-link.htm 8.21 </address> <p> This file is in the public domain, so clarified as of --- 18,24 ---- <body> <h1>Sources for Time Zone and Daylight Saving Time Data</h1> <address> ! @(#)tz-link.htm 8.22 </address> <p> This file is in the public domain, so clarified as of *************** *** 114,123 **** href="ftp://elsie.nci.nih.gov/pub/tzarchive.gz">full archive of old messages</a> (in gzip compressed format), or retrieve <a href="ftp://munnari.oz.au/pub/oldtz">archived older versions of code ! and data</a>; there is also a smaller <a ! href="http://public.planetmirror.com/pub/timezone"><abbr ! title="Hypertext Transfer Protocol">HTTP</abbr> ! mirror</a>.</p> <p> The Web has several other sources for time zone and daylight saving time data. Here are some recent links that may be of interest. --- 114,120 ---- href="ftp://elsie.nci.nih.gov/pub/tzarchive.gz">full archive of old messages</a> (in gzip compressed format), or retrieve <a href="ftp://munnari.oz.au/pub/oldtz">archived older versions of code ! and data</a>.</p> <p> The Web has several other sources for time zone and daylight saving time data. Here are some recent links that may be of interest. diff -c old/zic.c new/zic.c *** old/zic.c Mon Apr 20 16:17:54 2009 --- new/zic.c Sat Jul 11 12:07:04 2009 *************** *** 3,9 **** ** 2006-07-17 by Arthur David Olson. */ ! static char elsieid[] = "@(#)zic.c 8.19"; #include "private.h" #include "locale.h" --- 3,9 ---- ** 2006-07-17 by Arthur David Olson. */ ! static char elsieid[] = "@(#)zic.c 8.20"; #include "private.h" #include "locale.h" *************** *** 1921,1927 **** if (stdrp != NULL && stdrp->r_hiyear == 2037) return; } ! if (stdrp == NULL && zp->z_nrules != 0) return; abbrvar = (stdrp == NULL) ? "" : stdrp->r_abbrvar; doabbr(result, zp->z_format, abbrvar, FALSE, TRUE); --- 1921,1927 ---- if (stdrp != NULL && stdrp->r_hiyear == 2037) return; } ! if (stdrp == NULL && (zp->z_nrules != 0 || zp->z_stdoff != 0)) return; abbrvar = (stdrp == NULL) ? "" : stdrp->r_abbrvar; doabbr(result, zp->z_format, abbrvar, FALSE, TRUE);

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Time zone data for Dhaka is missing an end date
by nikolaus_brauer＠us.ibm.com July 9, 2009

July 9, 2009

To whom it may concern, I am writing to report an issue I have discovered in the recent change to the Asia/Dhaka time zone data, which recently implemented daylight saving time in June. The recent update to the time zone data (tzdata2009j) includes a start date for daylight saving time, but no end date. Intuitively, daylight saving time should have a start and an end date within the same year, otherwise what is implemented is an indefinite GMT offset change. Because of this programs that detect DST rules may see the absence of an end to the DST period as an error. This may cause programs which obtain DST rules using Olson time zone data to fail to detect daylight saving time rules for Asia/Dhaka. For completeness, I propose a tentative end date be implemented now, and an updated date be implemented once an official date is released, or the government releases an additional tentative date in September. According to timeanddate.com: "The press secretary did not confirm the length of DST but stated that the government would decide the DST end date and would announce it later. On another note, Bangladesh's minister for power said earlier in 2009 that the new timing might continue until the end of September. Timeanddate.com will provide an update on the DST end date when it becomes available. " ( http://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html ): Timeanddate.com picked September 25th, which seems like a likely enough date. I have update the tzdata on my system with the following rules to implement this change. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Dhaka09 2009 max - Jun 19 23:00 1:00 D Rule Dhaka09 2009 max - Sep 26 00:00 0:00 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Dhaka 6:01:40 - LMT 1890 5:53:20 - HMT 1941 Oct # Howrah Mean Time? 6:30 - BURT 1942 May 15 # Burma Time 5:30 - IST 1942 Sep 6:30 - BURT 1951 Sep 30 6:00 - DACT 1971 Mar 26 # Dacca Time 6:00 Dhaka09 B%sT # Bangladesh Time Could you please evaluate this change for inclusion in the Olson time zone data? Please let me know if you have any questions or concerns. Thanks, Nik

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Bangladesh DST end
by ravi-iyer.v＠nokia.com July 7, 2009

July 7, 2009

Hi there, I downloaded tzdata2009j and it does not seem to have the DST end for Bangladesh. I saw couple of threads related to this saying that the end time was still not announced by the Bangladesh government. Is that still the case? Because I can see that timeanddate.com already shows that DST ends on 25th Sep at 12:00am. If this information is correct, when can we expect to see a new version of the database? Regards, Ravi

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FW: Bulletin C number 38
by Olson, Arthur David (NIH/NCI) [E] July 6, 2009

July 6, 2009

-----Original Message----- From: IERS EOP Product Center [mailto:services.iers@obspm.fr] Sent: Monday, July 06, 2009 12:46 To: adresc1(a)arcas.obspm.fr Subject: Bulletin C number 38 INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS) SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE SERVICE DE LA ROTATION TERRESTRE OBSERVATOIRE DE PARIS 61, Av. de l'Observatoire 75014 PARIS (France) Tel. : 33 (0) 1 40 51 22 26 FAX : 33 (0) 1 40 51 22 91 Internet : services.iers(a)obspm.fr Paris, 4 July 2009 Bulletin C 38 To authorities responsible for the measurement and distribution of time INFORMATION ON UTC - TAI NO positive leap second will be introduced at the end of December 2009. The difference between Coordinated Universal Time UTC and the International Atomic Time TAI is : from 2009 January 1, 0h UTC, until further notice : UTC-TAI = -34 s Leap seconds can be introduced in UTC at the end of the months of December or June, depending on the evolution of UT1-TAI. Bulletin C is mailed every six months, either to announce a time step in UTC, or to confirm that there will be no time step at the next possible date. Daniel GAMBIS Director Earth Orientation Center of IERS Observatoire de Paris, France

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Could I use time zone package in company software?
by Sun, Suping (NSN - CN/Beijing) July 2, 2009

July 2, 2009

hello I develop summer-time feature on company product, could I use compiled binary file zic and zdump in it? is there any license or property right problem? how should I do? thanks for answer in advance.

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GIS Atlas
by John Paulson June 25, 2009

June 25, 2009

Here is the link www.sedo.com/sale/?d=gisatlas.com Kind Regards John Paulson ----------------------------------------------------------------------------------------------------------- This electronic transmission is strictly confidential and intended solely for the addressee. If you are not the intended addressee, or have otherwise received this transmission in error, you must not disclose, copy or take any action in reliance of this transmission. If you have received this transmission in error, please notify the sender as soon as possible. ======================================================

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(PHP) CEST does not exist in December
by S�bastien WILLEMIJNS June 24, 2009

June 24, 2009

Hello, If anyone has the code to detect than "25 December $year XX:XX:XX CEST" does not exist I has (quicky and maybe badly) think i will compare time between GMT and an hour http://www.php.net/manual/fr/function.timezone-offset-get.php to grab offset (+1 or +2 for me in France) but if anyone has the code od a specific date ;)

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tzdata2009j.tar.gz
by Olson, Arthur David (NIH/NCI) [E] June 24, 2009

June 24, 2009

The file... ftp://elsie.nci.nih.gov/pub/tzdata2009j.tar.gz ...is now available; this reflects the Bangladesh change circulated earlier this week on the time zone mailing list (with a short turnaround since the DST change is impending). We'll get to revisit Bangladesh once the end to DST has been set. --ado

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zic produces wrong POSIX style TZ
by Andreas Schwab June 23, 2009

June 23, 2009

The current Bangladesh time zone description is unusual in that it ends with being continuously in DST. This uncovered a bug in zic, which infers a POSIX TZ string of BDST-6 from the rule. This is wrong since a time zone that is continuously in DST cannot be expressed by POSIX rules, so zic should not try to generate such a string. Andreas. --- zic.c.~1~ 2009-04-20 22:17:54.000000000 +0200 +++ zic.c 2009-06-22 18:35:10.000000000 +0200 @@ -1921,7 +1921,7 @@ const int zonecount; if (stdrp != NULL && stdrp->r_hiyear == 2037) return; } - if (stdrp == NULL && zp->z_nrules != 0) + if (stdrp == NULL && (zp->z_nrules != 0 || zp->z_stdoff != 0)) return; abbrvar = (stdrp == NULL) ? "" : stdrp->r_abbrvar; doabbr(result, zp->z_format, abbrvar, FALSE, TRUE); -- Andreas Schwab, aschwab(a)redhat.com GPG Key fingerprint = D4E8 DBE3 3813 BB5D FA84 5EC7 45C6 250E 6F00 984E "And now for something completely different."

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