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Implementation of zoneinfo (Olson, tz) database in .NET c-sharp csharp
by Joshua Kifer June 21, 2007

June 21, 2007

I finally found an implementation of this at CodePlex. It's part of the PublicDomain project. http://www.codeplex.com/publicdomain I hope this post adds some search fodder to the interweb for all those unlucky bastards seeking (and not finding) the same.

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Time Zone Data
by Lovell, Angela June 20, 2007

June 20, 2007

To Whom it may Concern, I would like to review your time zone data for possible use in Garmin GPS devices. Can you tell me if you have polygon data for the time zones across the world? If so, would it be possible to achieve a login name and password for the data? Please let me know if there is anything else I should know regarding this data. Thanks, Angela Lovell _____________________________________________________________ Angela Lovell | Cartography Development Manager | Garmin International Email: angela.lovell(a)garmin.com ------------------------- This e-mail and any attachments may contain confidential material for the sole use of the intended recipient. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of this e-mail or any attachment is prohibited. If you have received this e-mail in error, please contact the sender and delete all copies. Thank you for your cooperation

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FW: DST in South Korea
by Olson, Arthur David (NIH/NCI) [E] June 11, 2007

June 11, 2007

I'm forwarding this message from Alex Krivenyshev, who is not on the time zone mailing list (at least not at the address shown below). Those of you who are on the time zone mailing list should direct replies appropriately. --ado -----Original Message----- From: Alex Krivenyshev [mailto:info@worldtimezone.com] Sent: Monday, June 11, 2007 8:04 AM To: tz(a)lecserver.nci.nih.gov Subject: DST in South Korea According to YONHAP NEWS (Korea): "The South Korean government plans to discuss when it will introduce daylight saving time with the Japanese government": http://english.yonhapnews.co.kr/business/2007/06/11/90/0502000000AEN2007 06110030 00320F.HTML Alex Krivenyshev http://www.worldtimezone.com/dst_news/ NYC, NY

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DST in South Korea
by Alex Krivenyshev June 11, 2007

June 11, 2007

According to YONHAP NEWS (Korea): "The South Korean government plans to discuss when it will introduce daylight saving time with the Japanese government": http://english.yonhapnews.co.kr/business/2007/06/11/90/0502000000AEN2007061… 00320F.HTML Alex Krivenyshev http://www.worldtimezone.com/dst_news/ NYC, NY

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DST and cross-border Southern Cross campus (Queensland-NSW border)
by Paul Eggert June 4, 2007

June 4, 2007

Southern Cross University is planning Australia's first cross-border campus, and one of the technical challenges they're facing is that Queensland does not observe DST but New South Wales does. They haven't figured out yet how to schedule classes across the daylight-saving boundary. Classes are scheduled to start 2009. Reference: "Telling time for border uni plan", The Gold Coast Bulletin <http://www.gcbulletin.com.au/article/2007/06/05/5562_news.html> (2007-06-05)

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Antarctica Daylight Saving Time
by Alex Krivenyshev June 4, 2007

June 4, 2007

Antarctica Daylight Saving Time: I guess that 3 Antarctica Stations: Amundsen-Scott (South Pole) (USA), McMurdo (USA) and Scott (N.Z.) will follow extended DST New Zealand rules and will start "Summer Time" 1 week earlier than usual- on September 30, 2007 and back to Standard Time on the first Sunday in April- April 6, 2008. http://www.worldtimezone.com/daylight.html Alexander Krivenyshev http://www.worldtimezone.com New York, NY

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Japan begins to consider DST
by Sue Williams June 4, 2007

June 4, 2007

This news article says that Japan is beginning to comtemplate the idea of introducing daylight saving time. http://www.yomiuri.co.jp/dy/national/20070602TDY01005.htm This is not a done deal but something to keep an eye on. ...Sue

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a relevant .NET implementation to be linked to the Time Zone page
by Michael Kariv June 3, 2007

June 3, 2007

Hi, Here is a .NET library that I think should be linked to at the main page http://www.twinsun.com/tz/tz-link.htm The link: http://www.babiej.demon.nl/Tz4Net/main.htm This is how they defined themselves: C# /.NET implementation of timezone class based on Olson database (often called tz or zoneinfo). As opposite to Win32/.NET API, it allows to perform conversion of arbitrary time between arbitrary time zones. Regards Michael Kariv

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zone.tab corrections
by Andy McDonald May 31, 2007

May 31, 2007

There seem to be a few minor errors in zone.tab (2007f and earlier): America/Cambridge_Bay: zone.tab latitude/longitude is incorrect, according to http://www.meds-sdmm.dfo-mpo.gc.ca/meds/Prog_Nat/benchmark/single_station2_…, which gives +6907-10504, and my own experiments with Google Earth. Also zone.tab comments should be 'Mountain Time - west Nunavut' rather than 'Central Time - west Nunavut' Antarctica/DumontDUrville: The comment should very probably read 'Dumont d'Urville Station', rather than 'Dumont d'Urville Base', which seems to be a mis-translation of the French 'Base Dumont d'Urville'. See for example http://pdf.comnap.aq/comnap/comnap.nsf/P/StationsByName/FRdumo Pacific/Johnston: latitude/longitude is incorrect. The CIA seems to have it much closer with +1645-16931 (https://www.cia.gov/library/publications/the-world-factbook/geos/um.html) America/Aruba: latitude/longitude is incorrect. The CIA seems to have it much closer with +1230-06958 (https://www.cia.gov/library/publications/the-world-factbook/geos/aa.html) - looks like the current +1230-06858 is a typo. Europe/London: (!) latitude/longitude is incorrect - the current value is somewhere in the neighbourhood of Syon House in South-west London (http://en.wikipedia.org/wiki/Syon_House) Suggestions for a better value welcome. Ukrainian time zones Europe/Kiev, Europe/Uzhgorod and Europe/Zaporozhye: These might better be named Europe/Kyiv, Europe/Uzhhorod and Europe/Zaporizhia, being transliterations of the Ukrainian - rather than Russian - place-names. Similarly, the comment for Europe/Zaporozhye should perhaps be 'Zaporizhia, E Luhansk', rather than 'Zaporozh'ye, E Lugansk'. See for example http://www.uazone.net/Kiev_Kyiv.html and http://abcnews.go.com/Travel/wireStory?id=2588280. I'm sure I could rustle up references for the other names if pressed. Andy http://www.stemhaus.com/firefox/foxclocks/

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Vote about South Australia DST
by Jesper Norgaard Welen May 21, 2007

May 21, 2007

Now you can vote for whether you want the new 4 weeks longer DST in South Australia: http://www.safework.sa.gov.au/daylight/index.html ... although I suppose you shouldn't if you don't live in South Australia (I wonder how they check that!). That is also the most official reference I have seen of the new Australian DST in Victoria, New South Wales, Tasmania and the ACT. There most be more? See also http://www.ministers.sa.gov.au/news.php?id=1553 http://www.ministers.sa.gov.au/news.php?id=1600 Regards, - Jesper Jesper Nørgaard Welen Email: jnorgard(a)Prodigy.Net.mx Project Leader (Líder de Proyecto) Software CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo Dirección: CIMMYT Int. c/o Jesper Nørgaard Km. 45, Carretera México-Veracruz El Batán Texcoco, Edo. de México CP 56130 MEXICO Tel.: +52 (55) 58-04-20-04 ext. 1374 Fax: +52 (55) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 Download the shareware program World Time Explorer, I made: http://www.worldtimeexplorer.com/index.html

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New Australian DST rules?
by Jesper Norgaard Welen May 19, 2007

May 19, 2007

There is an article that claims that four Australian states will coordinate DST in 2007-2008 from the first Sunday in October until the first Sunday in April. The states are New South Wales, Victoria, Australian Capital Territory, and Tasmania. http://harden.yourguide.com.au/detail.asp?class=national%20news <http://harden.yourguide.com.au/detail.asp?class=national%20news&subclass=ge neral&story_id=575313&category=General> &subclass=general&story_id=575313&category=General This would return all 4 states to the 2006 rules for Tasmania (not applied in 2007, e.g. Tasmania was using Last Sunday in March, not First Sunday in April). I couldn't find any other authoritative information. Regards, - Jesper Jesper Nørgaard Welen Email: jnorgard(a)Prodigy.Net.mx Project Leader (Líder de Proyecto) Software CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo Dirección: CIMMYT Int. c/o Jesper Nørgaard Km. 45, Carretera México-Veracruz El Batán Texcoco, Edo. de México CP 56130 MEXICO Tel.: +52 (55) 58-04-20-04 ext. 1374 Fax: +52 (55) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 Download the shareware program World Time Explorer, I made: http://www.worldtimeexplorer.com/index.html

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FW: New Zealand time to end DST
by Olson, Arthur David (NIH/NCI) [E] May 17, 2007

May 17, 2007

I'm forwarding this message from Chris Smith, who is not on the time zone mailing list. Those of you who are on the time zone mailing list should direct replies appropriately. --ado From: Chris Smith [mailto:chrissmithnz@gmail.com] Sent: Thursday, May 17, 2007 12:39 AM To: tz(a)lecserver.nci.nih.gov Subject: New Zealand time to end DST Hi Small anomaly for New Zealand timezone DST stop time, the Time Act 1974 states (2) Any period prescribed in any Order in Council made under subsection (1) of this section shall commence at 2 a.m. New Zealand standard time on the day, being a Sunday, specified in the Order in Council, and shall cease at 2 a.m. New Zealand standard time on the day, being a Sunday, specified in the Order in Council or in any subsequent Order in Council. In NZ we are told accordingly to put clocks forward at 2 (to 3) and back at 3 (to 2). In my interpretation of this the zoneinfo is incorrect for NZ and should be stopping at 3am (since 1974) Regards Chris

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New Zealand time to end DST
by Chris Smith May 17, 2007

May 17, 2007

Hi Small anomaly for New Zealand timezone DST stop time, the Time Act 1974 states (2) Any period prescribed in any Order in Council made under subsection (1) of this section shall commence at 2 a.m. New Zealand standard time on the day, being a Sunday, specified in the Order in Council, and shall cease at 2 a.m. New Zealand standard time on the day, being a Sunday, specified in the Order in Council or in any subsequent Order in Council. In NZ we are told accordingly to put clocks forward at 2 (to 3) and back at 3 (to 2). In my interpretation of this the zoneinfo is incorrect for NZ and should be stopping at 3am (since 1974) Regards Chris

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tzcode2007f.tar.gz and tzdata2007f.tar.gz
by Olson, Arthur David (NIH/NCI) [E] May 16, 2007

May 16, 2007

The files... ftp://elsie.nci.nih.gov/pub/tzcode2007f.tar.gz ...and... ftp://elsie.nci.nih.gov/pub/tzdata2007f.tar.gz ...are now available. These reflect the data changes circulated last week on the time zone mailing list by Paul Eggert (including Haiti, Turks and Caicos, and New Zealand). They also reflect changes to zic.c to allow hour values greater than 24 (along with Paul's improved time value overflow checking). --ado

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FW: New Zealand time zone name?
by Olson, Arthur David (NIH/NCI) [E] May 8, 2007

May 8, 2007

I'm forwarding this message from Gao Yue, who is not on the time zone mailing list. Those of you who are on the time zone mailing list should direct replies appropriately. --ado -----Original Message----- From: Gao_Yue(a)emc.com [mailto:Gao_Yue@emc.com] Sent: Tuesday, May 08, 2007 2:45 PM To: tz(a)lecserver.nci.nih.gov Subject: New Zealand time zone name? Hi, I am wondering if the tz database used by Sun contains New Zealand time zones. According to this site, http://www.statoids.com/tnz.html , Tz database contains new Zealand time zones but I couldn't find NZST in this file. I organized this file displaying different tz data version used by different JRE versions. Thanks Yue <<JRE_Version_TimeZone_Map.xls>>

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RE: New Zealand time zone name?
by Gao_Yue＠emc.com May 8, 2007

May 8, 2007

Could you let me know the notation for new zealand time zone? Thanks > _____________________________________________ > From: Gao, Yue > Sent: Tuesday, May 08, 2007 2:41 PM > To: 'tz(a)elsie.nci.nih.gov' > Subject: New Zealand time zone name? > > Hi, > > I am wondering if the tz database used by Sun contains New Zealand > time zones. > > According to this site, http://www.statoids.com/tnz.html , > Tz database contains new Zealand time zones but I couldn't find NZST > in this file. > > I organized this file displaying different tz data version used by > different JRE versions. > > Thanks > Yue > > > << File: JRE_Version_TimeZone_Map.xls >>

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New Zealand time zone name?
by Gao_Yue＠emc.com May 8, 2007

May 8, 2007

Hi, I am wondering if the tz database used by Sun contains New Zealand time zones. According to this site, http://www.statoids.com/tnz.html , Tz database contains new Zealand time zones but I couldn't find NZST in this file. I organized this file displaying different tz data version used by different JRE versions. Thanks Yue <<JRE_Version_TimeZone_Map.xls>>

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FW: Need help
by Olson, Arthur David (NIH/NCI) [E] May 7, 2007

May 7, 2007

I'm forwarding this message from Manindra Sahoo, who is not on the time zone mailing list. Those of you who are on the time zone mailing list should direct replies appropriately. --ado From: Manindra Sahoo [mailto:Manindra.Sahoo@aricent.com] Sent: Sunday, May 06, 2007 7:55 AM To: tz(a)lecserver.nci.nih.gov Subject: Need help Hi David, How can i get timezone dynamically in linux, through C program. Regards, Manindra *********************** Aricent-Private *********************** "DISCLAIMER: This message is proprietary to Aricent and is intended solely for the use of the individual to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what it is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. Aricent accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus."

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Need help
by Manindra Sahoo May 6, 2007

May 6, 2007

Hi David, How can i get timezone dynamically in linux, through C program. Regards, Manindra *********************** Aricent-Private *********************** "DISCLAIMER: This message is proprietary to Aricent and is intended solely for the use of the individual to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what it is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. Aricent accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus."

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proposed change to 'zic' to support "outlandish" offsets
by Paul Eggert May 4, 2007

May 4, 2007

Currently zic allows only GMT offsets in the range -24:00 to 24:00. And yet the recent query about Mt. Athos led me to think that in some cases it can be useful to allow GMT offsets outside the range, to approximate the Julian calendar. And at any rate zic should be able to generate whatever offset can be stored in the standard tz file format, if only for testing purposes. So here is a proposed patch to the zic code and documentation to support this. I'll follow up with a message illustrating how this might be used to support Julian dates and civil times on Mt. Athos. =================================================================== RCS file: RCS/zic.8,v retrieving revision 2007.4 retrieving revision 2007.4.0.1 diff -pu -r2007.4 -r2007.4.0.1 --- zic.8 2007/03/20 12:48:10 2007.4 +++ zic.8 2007/04/23 22:27:49 2007.4.0.1 @@ -239,14 +239,35 @@ wall clock time is assumed. .B SAVE Gives the amount of time to be added to local standard time when the rule is in effect. -This field has the same format as the +This field's format is similar to that of the .B AT -field -(although, of course, the -.B w +field, except that the +.BR s , +.BR u , and -.B s -suffixes are not used). +.B w +suffixes are not used. +.IP +Also, for completeness, the +.B SAVE +field can be preceded by an +optional day count of the form +.IB N d +where +.I N +is a nonnegative integer number of days. +Both the day count and the time can be preceded by an optional sign; +if the second sign is omitted it is assumed to be the same as the first. +A day consists of 24 hours. +For example, +.B \-2d+23:45 +means minus 2 days, plus 23 hours and 45 minutes, and is equivalent +to +.B \-1d0:15 +which means minus 1 day, minus another 15 minutes. +The day count is not needed for any real-world example using the +Gregorian calendar, but it may be useful for testing, or for +half-baked approximations to other calendars. .TP .B LETTER/S Gives the @@ -287,15 +308,16 @@ zone. .B GMTOFF The amount of time to add to UTC to get standard time in this zone. This field has the same format as the -.B AT -and .B SAVE fields of rule lines; begin the field with a minus sign if time must be subtracted from UTC. .TP .B RULES/SAVE The name of the rule(s) that apply in the time zone or, -alternately, an amount of time to add to local standard time. +alternately, an amount of time to add to local standard time, +using the same format as the +.B SAVE +fields of rule lines. If this field is .B \- then standard time always applies in the time zone. =================================================================== RCS file: RCS/zic.c,v retrieving revision 2007.5 retrieving revision 2007.5.0.1 diff -pu -r2007.5 -r2007.5.0.1 --- zic.c 2007/03/26 17:53:22 2007.5 +++ zic.c 2007/04/23 22:27:49 2007.5.0.1 @@ -914,8 +914,12 @@ _("%s: panic: Invalid l_value %d\n"), /* ** Convert a string of one of the forms -** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss +** h hh:mm hh:mm:ss ** into a number of seconds. +** The string can be preceded by an optional Nd, where N is a day count. +** Both the day count and the time can be preceded by an optional sign. +** For example, "-1d+23:45" means minus 1 day, plus 23 hours and 45 minutes. +** If the second sign is omitted it is assumed to be the same as the first. ** A null string maps to zero. ** Call error with errstring and return zero on errors. */ @@ -927,15 +931,27 @@ const char * const errstring; const int signable; { int hh, mm, ss, sign; + int abshourmax, gotday; + char * endptr; + long dd, dd1; if (string == NULL || *string == '\0') return 0; - if (!signable) - sign = 1; - else if (*string == '-') { - sign = -1; - ++string; - } else sign = 1; + sign = 1; + dd = 0; + gotday = FALSE; + if (signable) { + dd1 = strtol(string, &endptr, 10); + if (string != endptr && *endptr == 'd') { + if (*string == '-') + sign = -1; + string = endptr + 1; + dd = dd1; + gotday = TRUE; + if (noise) + warning(_("day offsets not handled by pre-2007 versions of zic")); + } + } if (sscanf(string, scheck(string, "%d"), &hh) == 1) mm = ss = 0; else if (sscanf(string, scheck(string, "%d:%d"), &hh, &mm) == 2) @@ -945,18 +961,28 @@ const int signable; error(errstring); return 0; } - if ((hh < 0 || hh >= HOURSPERDAY || + if (! (LONG_MIN / SECSPERDAY <= dd && dd <= LONG_MAX / SECSPERDAY)) { + error(_("time overflow")); + return 0; + } + abshourmax = HOURSPERDAY - (gotday || mm || ss); + if (hh < -abshourmax || hh > abshourmax || mm < 0 || mm >= MINSPERHOUR || - ss < 0 || ss > SECSPERMIN) && - !(hh == HOURSPERDAY && mm == 0 && ss == 0)) { + ss < 0 || ss > SECSPERMIN) { error(errstring); return 0; } + if (signable) + switch (*string) { + case '-': sign = -1; hh = -hh; break; + case '+': sign = 1; break; + } if (noise && hh == HOURSPERDAY) warning(_("24:00 not handled by pre-1998 versions of zic")); - return eitol(sign) * - (eitol(hh * MINSPERHOUR + mm) * - eitol(SECSPERMIN) + eitol(ss)); + return oadd(eitol(dd) * SECSPERDAY, + eitol(sign) * + (eitol(hh * MINSPERHOUR + mm) * + eitol(SECSPERMIN) + eitol(ss))); } static void

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Re: proposed change to 'zic' to support "outlandish" offsets
by Robbin Kawabata May 4, 2007

May 4, 2007

> Date: Tue, 01 May 2007 16:50:12 -0700 > From: Paul Eggert <eggert(a)CS.UCLA.EDU> > > "Olson, Arthur David $NIH/NCI$ [E]" <olsona(a)dc37a.nci.nih.gov> writes: > > > I don't know about Mt. Athos in particular; the general case of trying > > to support Julian dates is complicated by needing to change the > > day-of-month associated with a time_t value without changing the > > day-of-week associated with the value. > > Yes, absolutely, and the change I proposed does not really support the > Julian calendar; it's just a hack. A similar hack already "works" on > some systems, e.g., on Solaris 8: > > $ date -u +'%Y-%m-%d %H:%M UTC'; TZ=Athos-310 date +'%Y-%m-%d %H:%M Athos' > 2007-05-01 23:46 UTC > 2007-05-14 21:46 Athos The above Solaris 8 behavior is accidental, due to no bounds checking of offset. This is changed in Solaris 10, where bounds checking is done. When the offset is out of bounds, TZ is considered incorrect, and an offset of zero is used as a default: $ date -u +'%Y-%m-%d %H:%M UTC'; TZ=Athos-310 date +'%Y-%m-%d %H:%M Athos' 2007-05-04 16:41 UTC 2007-05-04 16:41 Athos > so the question is whether the tz code should support similar hacks. > (Note that the day-of-week will be wrong in the above example.) > > > The advent of the 64-bit time_t extends the range of time_t values to > > include historical periods when the Julian calendar was in effect. It > > may or may not be worthwhile to try to change the handling of Julian-era > > time_t values; doing so would seem to require changes to both zic and to > > localtime. > > Yes, and I was reluctant to futz with localtime, to be honest, since > this would require a change to the tz compiled format. > > I think the primary justification for the proposed change is to > generate "outlandish" compiled tz files, for use in testing. If it's > not the intent to support outlandish values in compiled format, that > fact should probably be documented, and files containing such values > should be rejected by localtime.

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Position of rules definitions
by Liviu Nicoara May 3, 2007

May 3, 2007

Hi all, I noticed that a couple of rules (e.g. EU, Romania) in the Europe file are being referenced in zone definitions before they are defined. Is there a strong reason why their definitions should not precede their usage? Regards, Liviu

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Zone -12
by Paul Eggert May 2, 2007

May 2, 2007

[I'm forwarding this from Mark Brader <msb(a)vex.net>, who is not on the list; please direct replies accordingly.] Date: Tue, 1 May 2007 19:20:37 -0400 (EDT) From: msb(a)vex.net (Mark Brader) The Wikipedia article http://en.wikipedia.org/wiki/UTC-12 claims, without citing a source, that Baker Island and Howland Island use zone -12 (and the wording suggests that they may be the only places to do so). The tz database says "no information" about their time zone. Any idea where this -12 might have came from? Both sources agree that the islands are uninhabited (although it seems that the US Fish and Wildlife Service makes occasional "visits"), so the question is of little practical importance, but I ask anyway. -- Mark Brader "...there are other means of persuasion msb(a)vex.net besides killing and threatening to kill." Toronto --Dashiell Hammett, The Maltese Falcon

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New Zealand Daylight Saving change
by Mark Davies May 2, 2007

May 2, 2007

In case this hasn't been reported yet: The New Zealand Government has just extended the period that Daylight Savings applies for in New Zealand. It will now be from the last Sunday in Sept through first Sunday in April. See: http://www.dia.govt.nz/diawebsite.nsf/wpg_URL/Services-Daylight-Saving-Inde… Which leads to the following change to the australasia file I believe: --- australasia 2007-04-03 02:11:34.000000000 +1200 +++ australasia.new 2007-05-02 13:08:24.000000000 +1200 @@ -348,10 +348,14 @@ Rule Chatham 1976 1989 - Mar Sun>=1 2:45s 0 S Rule NZ 1989 only - Oct Sun>=8 2:00s 1:00 D Rule Chatham 1989 only - Oct Sun>=8 2:45s 1:00 D -Rule NZ 1990 max - Oct Sun>=1 2:00s 1:00 D -Rule Chatham 1990 max - Oct Sun>=1 2:45s 1:00 D -Rule NZ 1990 max - Mar Sun>=15 2:00s 0 S -Rule Chatham 1990 max - Mar Sun>=15 2:45s 0 S +Rule NZ 1990 2006 - Oct Sun>=1 2:00s 1:00 D +Rule Chatham 1990 2006 - Oct Sun>=1 2:45s 1:00 D +Rule NZ 1990 2007 - Mar Sun>=15 2:00s 0 S +Rule Chatham 1990 2007 - Mar Sun>=15 2:45s 0 S +Rule NZ 2007 max - Sep lastSun 2:00s 1:00 D +Rule Chatham 2007 max - Sep lastSun 2:45s 1:00 D +Rule NZ 2008 max - Apr Sun>=1 2:00s 0 S +Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2 11:30 NZ NZ%sT 1946 Jan 1 cheers mark

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proposed tz changes for Haiti, Turks&Caicos, New Zealand, Caprivi
by Paul Eggert May 1, 2007

May 1, 2007

Thanks for all those heads-ups about New Zealand. In nosing around the web I think Haiti has probably changed to not use DST, so let's go with that change too (it's the most pressing, as it affects today's time stamps). Here are all the changes that I have accumulated, not counting the proposed zic.c change already discussed. Changes affecting current time stamps: * Haiti no longer observes DST. (Thanks to Stephen Colebourne for this.) Changes affecting past and future time stamps: * The Turks and Caicos switch at 02:00, not at 00:00, and have adopted US DST rules. (Thanks to Chris Dunn and Brian Inglis for this.) Changes affecting future time stamps only: * New Zealand is extending DST, starting later this year. (Thanks to Colin Sharples and many others for this info.) Changes affecting commentary only: * The Caprivi Strip unofficially does not observe DST, but we currently have no further details. (Thanks to Petronella Sibeene for this.) =================================================================== RCS file: RCS/africa,v retrieving revision 2007.1 retrieving revision 2007.1.0.1 diff -pu -r2007.1 -r2007.1.0.1 --- africa 2007/01/08 17:24:41 2007.1 +++ africa 2007/05/01 23:50:26 2007.1.0.1 @@ -416,6 +416,20 @@ Zone Africa/Maputo 2:10:20 - LMT 1903 Ma # Namibia # The 1994-04-03 transition is from Shanks & Pottenger. # Shanks & Pottenger report no DST after 1998-04; go with IATA. + +# From Petronella Sibeene (2007-03-30) in +# <http://allafrica.com/stories/200703300178.html>: +# While the entire country changes its time, Katima Mulilo and other +# settlements in Caprivi unofficially will not because the sun there +# rises and sets earlier compared to other regions. Chief of +# Forecasting Riaan van Zyl explained that the far eastern parts of +# the country are close to 40 minutes earlier in sunrise than the rest +# of the country. +# +# From Paul Eggert (2007-03-31): +# Apparently the Caprivi Strip informally observes Botswana time, but +# we have no details. In the meantime people there can use Africa/Gaborone. + # RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Namibia 1994 max - Sep Sun>=1 2:00 1:00 S Rule Namibia 1995 max - Apr Sun>=1 2:00 0 - =================================================================== RCS file: RCS/australasia,v retrieving revision 2007.4 retrieving revision 2007.4.0.1 diff -pu -r2007.4 -r2007.4.0.1 --- australasia 2007/03/20 12:48:12 2007.4 +++ australasia 2007/05/01 23:50:26 2007.4.0.1 @@ -348,10 +348,14 @@ Rule NZ 1976 1989 - Mar Sun>=1 2:00s 0 S Rule Chatham 1976 1989 - Mar Sun>=1 2:45s 0 S Rule NZ 1989 only - Oct Sun>=8 2:00s 1:00 D Rule Chatham 1989 only - Oct Sun>=8 2:45s 1:00 D -Rule NZ 1990 max - Oct Sun>=1 2:00s 1:00 D -Rule Chatham 1990 max - Oct Sun>=1 2:45s 1:00 D -Rule NZ 1990 max - Mar Sun>=15 2:00s 0 S -Rule Chatham 1990 max - Mar Sun>=15 2:45s 0 S +Rule NZ 1990 2006 - Oct Sun>=1 2:00s 1:00 D +Rule Chatham 1990 2006 - Oct Sun>=1 2:45s 1:00 D +Rule NZ 1990 2007 - Mar Sun>=15 2:00s 0 S +Rule Chatham 1990 2007 - Mar Sun>=15 2:45s 0 S +Rule NZ 2007 max - Sep lastSun 2:00s 1:00 D +Rule Chatham 2007 max - Sep lastSun 2:45s 1:00 D +Rule NZ 2008 max - Apr Sun>=1 2:00s 0 S +Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2 11:30 NZ NZ%sT 1946 Jan 1 @@ -1146,6 +1150,12 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 # transitions at 2:45 local standard time; this confirms that Chatham # is always exactly 45 minutes ahead of Auckland. +# From Colin Sharples (2007-04-30): +# DST will now start on the last Sunday in September, and end on the +# first Sunday in April. The changes take effect this year, meaning +# that DST will begin on 2007-09-30 2008-04-06. +# http://www.dia.govt.nz/diawebsite.nsf/wpg_URL/Services-Daylight-Saving-Dayl… + ############################################################################### =================================================================== RCS file: RCS/northamerica,v retrieving revision 2007.5 retrieving revision 2007.5.0.1 diff -pu -r2007.5 -r2007.5.0.1 --- northamerica 2007/04/02 14:11:26 2007.5 +++ northamerica 2007/05/01 23:50:26 2007.5.0.1 @@ -2325,6 +2325,9 @@ Zone America/Guatemala -6:02:04 - LMT 19 # # The reason seems to be an energy crisis. +# From Stephen Colebourne (2007-02-22): +# Some IATA info: Haiti won't be having DST in 2007. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Haiti 1983 only - May 8 0:00 1:00 D @@ -2334,8 +2337,8 @@ Rule Haiti 1983 1987 - Oct lastSun 0:00 # Go with IATA. Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S -Rule Haiti 2005 max - Apr Sun>=1 0:00 1:00 D -Rule Haiti 2005 max - Oct lastSun 0:00 0 S +Rule Haiti 2005 2006 - Apr Sun>=1 0:00 1:00 D +Rule Haiti 2005 2006 - Oct lastSun 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Port-au-Prince -4:49:20 - LMT 1890 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT @@ -2518,13 +2521,31 @@ Zone America/St_Vincent -4:04:56 - LMT 1 -4:00 - AST # Turks and Caicos -# From Paul Eggert (2006-03-22): +# +# From Chris Dunn in +# <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=415007> +# (2007-03-15): In the Turks & Caicos Islands (America/Grand_Turk) the +# daylight saving dates for time changes have been adjusted to match +# the recent U.S. change of dates. +# +# From Brian Inglis (2007-04-28): +# http://www.turksandcaicos.tc/calendar/index.htm [2007-04-26] +# there is an entry for Nov 4 "Daylight Savings Time Ends 2007" and three +# rows before that there is an out of date entry for Oct: +# "Eastern Standard Times Begins 2007 +# Clocks are set back one hour at 2:00 a.m. local Daylight Saving Time" +# indicating that the normal ET rules are followed. +# +# From Paul Eggert (2006-05-01): # Shanks & Pottenger say they use US DST rules, but IATA SSIM (1991/1998) -# says they switch at midnight. Go with IATA SSIM. +# says they switch at midnight. Go with Shanks & Pottenger. +# # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule TC 1979 1986 - Apr lastSun 0:00 1:00 D -Rule TC 1979 max - Oct lastSun 0:00 0 S -Rule TC 1987 max - Apr Sun>=1 0:00 1:00 D +Rule TC 1979 1986 - Apr lastSun 2:00 1:00 D +Rule TC 1979 2006 - Oct lastSun 2:00 0 S +Rule TC 1987 2006 - Apr Sun>=1 2:00 1:00 D +Rule TC 2007 max - Mar Sun>=8 2:00 1:00 D +Rule TC 2007 max - Nov Sun>=1 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Grand_Turk -4:44:32 - LMT 1890 -5:07:12 - KMT 1912 Feb # Kingston Mean Time =================================================================== RCS file: RCS/tz-art.htm,v retrieving revision 2006.11 retrieving revision 2006.11.0.1 diff -pu -r2006.11 -r2006.11.0.1 --- tz-art.htm 2006/08/21 13:56:09 2006.11 +++ tz-art.htm 2007/05/01 23:50:26 2006.11.0.1 @@ -178,6 +178,56 @@ Richard Teitelbaum, modular moog and mic <tr><td>Notes</td><td>Includes the song "Central Standard Time." Thanks to Colin Bowern for this information.</td></tr> <tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:7ddovwvla9xk">AMG Rating</a></td><td>2.5 stars</td></tr> <tr><td> </td></tr> + +<tr><td>Artist</td><td>Coldplay</td></tr> +<tr><td>Song</td><td>Clocks</td></tr> +<tr><td>Copyright Date</td><td>2003</td></tr> +<tr><td>Label</td><td>Capitol Records</td></tr> +<tr><td>ID</td><td>52608</td></tr> +<tr><td>Total Time</td><td>4:13</td></tr> +<tr><td>Notes</td><td>Won the 2004 Record of the Year honor at the +Grammy Awards. Co-written and performed by Chris Martin, +great-great-grandson of DST inventor William Willett. The song's first +line is "Lights go out and I can't be saved".</td></tr> +<td> </td></tr> + +<tr><td>Artist</td><td>Irving Kahal and Harry Richman</td></tr> +<tr><td>Song</td><td>There Ought to be a Moonlight Saving Time</td></tr> +<tr><td>Copyright Date</td><td>1931</td> +<tr><td>Notes</td><td>This musical standard was a #1 hit for Guy Lombardo +in 1931, and was also performed by Maurice Chevalier, Blossom Dearie +and many others. The phrase "Moonlight saving time" also appears in +the 1995 country song "Not Enough Hours in the Night" written by Aaron +Barker, Kim Williams and Rob Harbin and performed by Doug +Supernaw.</td></tr> +<tr><td> </td></tr> + +<tr><td>TV episode title</td><td>The Lost Hour</td> +<tr><td>TV series</td><td>Eerie, Indiana</td> +<tr><td>TV episode number</td><td>10</td> +<tr><td>Network</td><td>NBC</td> +<tr><td>Air date</td><td>1991-12-01</td> +<tr><td>Notes</td><td>Despite Indiana's then-lack of DST, Marshall changes his clock with unusual consequences.</td></tr> +<tr><td> </td></tr> + +<tr><td>TV episode title</td><td>Time Tunnel</td> +<tr><td>TV series</td><td>The Adventures of Pete & Pete</td> +<tr><td>TV episode number</td><td>5, season 2</td> +<tr><td>Network</td><td>Nickelodeon</td> +<tr><td>Air date</td><td>1994-10-23</td> +<tr><td>Notes</td><td>The two Petes travel back in time an hour on the day that DST ends.</td></tr> +<tr><td> </td></tr> + +<tr><td>TV episode title</td><td>King-Size Homer</td> +<tr><td>TV series</td><td>The Simpsons</td> +<tr><td>TV episode number</td><td>135</td> +<tr><td>Network</td><td>Fox</td> +<tr><td>Air date</td><td>1995-11-05</td> +<tr><td>Notes</td><td>Homer, working from home, remarks "8:58, first +time I've ever been early for work. Except for all those daylight +savings days. Lousy farmers."</td></tr> +<tr><td> </td></tr> + <tr><td>Artist</td><td>Jules Verne</td></tr> <tr><td>Book</td><td>Le Tour du Monde en Quatre-Vingts Jours (Around the World in Eighty Days)</td></tr>

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