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Re: [tz] Ambiguous abbreviations for Australian timezones when daylight savings is in affect [SEC=UNCLASSIFIED]
by Timothy Arceri April 30, 2013

April 30, 2013

On 31/03/13 01:24, Paul Eggert wrote: >On 03/30/13 03:34, Timothy Arceri wrote: >> The links that I have presented in the other thread make it fairly clear that >> all states *are* using a consistent format for abbreviations. >I'm afraid that doesn't follow. One can easily find disagreements >with the contents of those links. For example, you gave a link to the >NSW Dept of Attorney General & Justice saying that in summer, eastern time >is abbreviated "AEDT". But that very web page also says, in another >place, that the abbreviation is "EDST". So this single source contradicts >the assertion that abbreviations are consistently used by the NSW >government. >Here's that URL again: >http://www.communityrelations.lawlink.nsw.gov.au/cru/daylight/definitions_o… >And the EDST-related quote from that page: >"Daylight saving or summer time is commonly expressed as EDST (Eastern Daylight Saving Time)." Just FYI I contacted the Department to enquire as to why they had included different abbreviations on that page and if they could clarify what abbreviation is officially used. While I did not get a direct response to my questions I did get a reply today: "Thank you for the feedback which you submitted regarding abbreviations the Department uses for daylight saving on its website. You may be interested to know that the Department has noted your concerns and has updated its website accordingly." Looking at the page they have now removed all reference to EDST and have also additionally added abbreviations for all other states mentioned. Tim

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FTP server down?
by enh April 24, 2013

April 24, 2013

i haven't been able to contact the FTP server this morning. i added support for getting updates from the HTTP server ( https://android-review.googlesource.com/57332) but FTP is still the preferred method because: 1. you can get a directory listing via FTP but not HTTP, so if you miss a couple of changes, my script can't take you through the intermediates so the git history remains complete. 2. you can't get the .asc files via HTTP, so no verification. if HTTP is the preferred download method going forward, could we get .asc files on there and have directory listings turned on for the releases directory? --elliott (Android tzdata maintainer)

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Proposal to change Macquarie Island to be Australian territory
by Tobias Conradi April 22, 2013

April 22, 2013

UNESCO http://whc.unesco.org/en/list/629 lists it as Australia | State of Tasmania http://www.iso.org/iso/iso-3166-1_decoding_table does not contain a code for Tasmania, thus Australia "AU" is the applicable code. ftp://ftp.iana.org/tz/data/zone.tab Change AQ -5430+15857 Antarctica/Macquarie Macquarie Island Station, Macquarie Island To AU -5430+15857 Antarctica/Macquarie Macquarie Island Station, Macquarie Island ftp://ftp.iana.org/tz/data/antarctica Move Antarctica/Macquarie content to ftp://ftp.iana.org/tz/data/australasia in analogy to Turkey and Russia, ISO countries that are not split between two files. -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com/

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World map showing IANA zone area by colored zone labels
by Tobias Conradi April 22, 2013

April 22, 2013

A map showing the area-part of the time zone with differently colored zone labels has been published, since the image URL may change, here is only an indirect link: http://anna.info/wiki/ANNA_time_zone_maps Areas, as defined in the Theory file, having at least one labeled zone in the map are: America, Europe, Africa, Asia, Australia, Antarctic, Arctic, Atlantic, Indian The unique three character codes have been chosen over the tzids to get more zone labels on the map. All codes that do not contain the character "0" or "1" represent the location part of an UN/LOCODE in that zone, mostly the location. The map is based on data in tz_world_mp.zip from http://efele.net/maps/tz/world/ projected with qgis. I had no time yet to color the zones and did not manage to get higher resolution or SVG. I could make an SVG, but not with the labels. The parallels are multiple of 30 degree from the poles, so the equator is shown as well as the Antartic Treaty boundary. Antarctica/Macquarie and Arctic/Longyearbyen are shown in gray and are the only location labels shown for their area. Looking at the map I found South Georgia, which located in ocean water and has almost the same latitude as Macquarie The coordinates in zone.tab are: -5416-03632 Atlantic/South_Georgia -5430+15857 Antarctica/Macquarie -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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CLDR UN/LOCODE usage
by Tobias Conradi April 21, 2013

April 21, 2013

Was: Re: [tz] Proposal to change Macquarie Island to be Australian territory A reply to :http://mm.icann.org/pipermail/tz/2013-April/019135.html First LOCODE message in the thread was at http://mm.icann.org/pipermail/tz/2013-April/019114.html ------------ On Sat, Apr 20, 2013 at 3:53 PM, Mark Davis ☕ <mark(a)macchiato.com> wrote: > On Fri, Apr 19, 2013 at 12:35 PM, Tobias Conradi > <mail.2012(a)tobiasconradi.com> wrote: >> On Fri, Apr 19, 2013 at 11:17 AM, Mark Davis ☕ <mark(a)macchiato.com> wrote: >> >> Variable length and inconsistent country code usage: >> > >> > This is a misunderstanding. >> Of the UN LOCODE system, on the side of CLDR designers. >> >> > CLDR is specified to use 5 letter UN LOCODEs where they exist. Where >> > they do >> > not exist, it is specified to use a non-5-letter code, precisely so that >> > they do not overlap with future UN LOCODEs. >> That could have been easily achieved with 5-letter codes, as has been >> shown at: >> http://mm.icann.org/pipermail/tz/2012-May/017974.html and >> http://mm.icann.org/pipermail/tz/2012-May/017980.html >> >> If overlap prevention the goal, then there was misunderstanding of the >> UN LOCODE system on the side of CLDR. > > > The only way that there would be a problem for CLDR is if the UN LOCODEs > could be other than 5 alphanumerics. It may be true that there is no /problem for CLDR/ - but the claim was that CLDR has "Variable length and inconsistent country code usage" > > According to > http://www.unece.org/fileadmin/DAM/cefact/locode/unlocode_manual.pdf, the UN > LOCODE would be 5 letters and possibly numbers (in positions 3-5). As long > as any additional CLDR identifiers did not match that, there wouldn't be an > overlap. > > So I don't understand your contention. Are you saying that UN LOCODEs, can > in fact consist of other than 5 alphanumerics? I don't say so, and AFAICS never said so. >> > When the codes are not 5 >> > letters, the first two letters have no meaning. >> Except where they have. And for some from the US, even the first 4 >> have a meaning: >> debsngn: de = Germany >> gldkshvn: gl = Greenland >> mxstis: mx = Mexico >> rukhndg: ru = Russia >> ruunera: ru = Russia >> usinvev: us = US (usin = Indiana) >> usnavajo: us = US >> usndcnt: us = US (usnd = North Dakota) >> usndnsl: us = US (usnd = North Dakota) > > > I should have said: When the codes are not 5 alphanumerics, the first two > letters do not *necessarily* denote a country code. That was my starting claim: "inconsistent country code usage" >> > The codes are stablized, meaning that they will not change no matter >> > what >> > changes happen in the base codes. So if Hawaii leaves the US and joins >> > Canada as a new province, "ushnl" would not change in CLDR even if the >> > UN >> > LOCODE changes to "cahnl" or something else. >> And combining this with "When the codes are not 5 letters, the first >> two letters have no meaning.", assuming that, if they have 5 letters >> they /may/ have a meaning, leads to the fact that the meaning in CLDR >> would be different from the meaning in the UN LOCODE system. > > > I don't understand what you are saying: that would only be an issue if there > were overlaps. What don't you understand in : "the meaning in CLDR would be different from the meaning in the UN LOCODE system"? The meaning of the first two letters in the UN/LOCODE system, except for private range codes, is to show the current valid ISO 3166-1 alpha-2 country code for the country the location identified by the UN/LOCODE is located in. >> A statement on why a country relation was not seen suitable for time >> zone identifiers can be found at: >> ftp://ftp.iana.org/tz/code/Theory >> "Be robust in the presence of political changes." > > > That's fine for TZ codes. As far as CLDR is concerned, however, the main > goal is to have an unambiguous, stable ID that is from 3-8 ASCII > alphanumerics long and maps to TZ codes. The 3-8 ASCII limitation is imposed > by BCP47, so we could not use the TZ codes unmodified. We could have chosen > to simply number them, but decided that the UN LOCODEs would be a bit > simpler to deal with. A "3-8 ASCII limitation [...] imposed by BCP47" would have allowed for fixed length 5-digit codes. As emailed here: http://mm.icann.org/pipermail/tz/2013-April/019117.html "It is common for identifiers created by ISO to have fixed length, e.g. ISWC, ISSN, ISMN, ISRC, ISBN, ISNI, ISAN, ISO country codes, ISO language codes." But CLDR for an unstated reason did choose variable length. If one lists them in a table, the column containing them is unnecessarily wider. If one puts them as labels on a map, they are harder to fit. In both cases, the non-5-character codes draw extra attention by the reader to them. Maybe all new assignments can be restricted to 5-character codes? -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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Re: [tz] Proposal to use Asia/Tel_Aviv for Israel - Jerusalem is not internationally recognized as part of Israel
by SM April 20, 2013

April 20, 2013

At 06:21 20-04-2013, Tobias Conradi wrote: >== Problem == >Jerusalem is internationally not recognized as part of Israel. Using >Jerusalem as reference location for Israel in the IANA time zone >database may thus violate UN resolutions. If I recall correctly the argument was to use population size. Regards, -sm

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tzcode2013c and tzdata2013c available
by Paul Eggert April 20, 2013

April 20, 2013

The 2013c release of the tz code and data is available. It reflects the following changes circulated on the tz mailing list: Changes affecting current and future time stamps: Palestine observed DST starting March 29, 2013. (Thanks to Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, with the predicted rules being the last Thursday in March at 24:00 to the first Friday on or after September 21 at 01:00. Assume that the recent change to Paraguay's DST rules is permanent, by moving the end of DST to the 4th Sunday in March every year. (Thanks to Carlos Raúl Perasso.) Changes affecting past time stamps: Fix some historical data for Palestine to agree with that of timeanddate.com, as follows: The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not 00:00 Apr 1. The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not 02:00. The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27. The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2. The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01. The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00. Fix times of habitation for Macquarie to agree with the Tasmania Parks & Wildlife Service history, which indicates that permanent habitation was 1899-1919 and 1948 on. Changing affecting metadata only: Macquarie Island is politically part of Australia, not Antarctica. (Thanks to Tobias Conradi.) Sort Macquarie more-consistently with other parts of Australia. (Thanks to Tim Parenti.) Here are links to the release files: http://www.iana.org/time-zones/repository/releases/tzcode2013c.tar.gz http://www.iana.org/time-zones/repository/releases/tzdata2013c.tar.gz ftp://ftp.iana.org/tz/releases/tzcode2013c.tar.gz ftp://ftp.iana.org/tz/releases/tzdata2013c.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 f599ad15ce247473d28c179ff4d836dfcdbd0ca5 dated 2013-04-19 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 v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJRcdDFAAoJEO2X6Q5iqn409ZYP/jNMuGfRb/3qwqDeUaiMUKrS yBWCYkME/oYLWSHdThGNKCRBhS8Hyr1qgOCm5YfYRTP2ZRKKOIAYPEWFUm5BvRYs r1nVmJVTea6/6jJq3yx5rAunb2C1ZRnyvHBBONRYEpAOm2EMiCMeDAXtXIpwqP7e VaAX5TFAKnxn6WJFZduU6TkCr1oWcNoFu7mZN0jy/9K1K8SLT95TLNtGAI9LtETk 3Ra9omCGy9hn/cV+PQcRa1P62uVYtyQat9Vx+nsYWluAbEofcK2wsdcIeqPlBY4X EdN66JmTrfJTrkZN425/0WIFxhr6X/nrS9LuQidzMy1PrU+0dvIWFxyUx0vE5bL5 p4NB41nu/jGs8H5ziEzDgLzMnKrMv+FzvWtcP9mYGVEzokUujxIARdUUiXoy/o4h xU111amQuDb/bmQJzdef1/SrTFqKJNwRikamDGdV+XmOJUKg1I/xP7U18c8J3qJd bgahir1f49jcglmN/W+/ViKVFZiJE/XeMSG3dGVcf3Ji9J1CHIlNjrTeTAHeilGI B+6gl/KPi6xrP8MtWs6jBVrGwzOL1zS7o+AFigWSEVU7a3UcqhGim18GXS4VjjTy lck/baoHF85mS9pig0lMxYLFa0+g/x5X7+nFAC8b6fLT/zmxwYXfuEOp35LixVC/ o330alvZudQDmy0vvwVY =h5yf -----END PGP SIGNATURE----- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJRcdDFAAoJEO2X6Q5iqn40p78P/371Lir9rfTXas0Z6lvp3Lp9 KRv7+yzpNMh1toxsUmkeswvdRxn7v+r+l7F5G0oLlK7CN88nW8uUua+R/YNvMcRG v4UOxaIhCRrM2PG/JGiXF/6kjHP9m0l3206HJzxnhW1atl8DCVEz93jyUbVXtf20 IYlDv7DOqLj9GW5VoK8KlExnymUKgtGBuLlyROoKomGlWt851d05mrAMLTeVQ/Nh RasevczuqFhpGgB444/mJZ4KOTCElYyl9sau9qXXr5MfA5MmtOKaeg8O2r3PZl2x 0oto97okGITNu5hrhJ1dYk7WjM27HfDUHcIvGdsmXmdebA703O5sk4M2R3F/dYNL 79N+sFOfs8qBp4Knclv8eMVoptKJ/ARLkkdduU2ZE/I4oai4YaIYNLi+r9NFQWdU ihVsYdcPTvRAK/6+RaINPwS6JhHsbKWBqyFS+80q268WyC/gfPPH61/ZrJ+fiRiT FeBD1LYs+n1LO9gvtUzsVpJipc07OMWUR8RTFuhkBXMhRuOKk0ClkulV50bMDll9 M27pr4DlRohiCbCUVLIUkOYJNUfcLGGCfN33EWQf2h9E+9DEgsKcnYwv7y3384vQ lj0xHcGLwYj9xBnVQZwiVBIkeblzToWJ4pYSu7Lv0bUd/CE3paBTN1vSh8RmeMQc JV78TcXpv14qn9s04/n6 =ID32 -----END PGP SIGNATURE-----

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Proposal to change Antarctica/Macquarie to Pacific/Macquarie
by Tobias Conradi April 20, 2013

April 20, 2013

Some repition of former emails and one use case/practical implication. Correctness: 1) Macquarie is outside the territory covered by The Antarctic Treaty 1959-12-01 http://www.ats.aq/documents/ats/treaty_original.pdf "The provisions of the present Treaty shall apply to the area south of 60° South Latitude" 2) Macquarie is the only location to have the Area Antarctic and be not south of 60° South Latitude Fix: 3) The distance from Macquarie to Australian mainland (~2000 km) is larger than from Madagascar to Africa. Madagascar is placed in the surrounding ocean under Indian/ , so Macquarie can be placed in the surrounding ocean. 4) TZ identifiers have been changed if localities have been renamed. That is, the identifiers have been adapted to new real world situation. Here, the adaption would be a correction in the data, as is the change for Macquarie from ISO country AQ to AU. It has been wrong from the beginning. If one wants to freeze the identifiers, then please not for actual errors, especially not before a freeze is officially announced and data be checked. The location part of the tzid is not necessarily matching anything in the real world, since there is the 14 character limit and some limits in the choice of characters. But the area part normally matches the real world name of the area. Problem: 5) I just opened tz_world_mp in QGis and when opening the Attribute Table and sorting by TZID Macquarie is listed out of place. This will happen in any environment that does sorting by TZID. Here it is special, since geographic Antarctica is not included in tz_world_mp leading to only one TZID under Antarctica/.... In map projections Antarctica often gets a special treatment. It may also be excluded as in * tz_world_mp (no time zones for Antarctica) * http://unstats.un.org/unsd/methods/m49/m49regin.htm In programming a simple string matching on the IDs could remove time zones located in geographic Antarctica, if Macquarie would be moved out of Antarctica/.... So this has an effect on programming work. Summary: Fixing it now will avoid many discussions or annoyances caused by Macquarie being placed in an, as far as general definitions of Antarctica are concerned wrong area. It will help programmers and other people that work with the data. This is a very special case of tzid change. -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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tzcode for windows?
by random832＠fastmail.us April 19, 2013

April 19, 2013

It came up as an aside in the earlier discussion about moving to uintmax_t, but I was wondering - is there any interest in a port to windows? I've got most of the way to a successful zic port (other tools don't work so well yet - everything compiles, but there are subtle incompatibilities that cause problems for the library functions) -- Random832

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Not sure how to add to thread...
by Marvel, Jim (CPCOE) April 19, 2013

April 19, 2013

Hi, I posted before about Asia/Khandyga and Asia/Ust-Nera, wondering if they will show up in the efele tz_database with their own Tzid Can't find them as of October 8th file. Please let me know which polygons to be assigned to each of these Tzid. Thanks Jim Marvel Software Engineer II Honeywell ESEA/CMS/CP/CoE 8323 Lindbergh Court Sarasota FL 34243 Phone - 941.360.6209 (alt: 941.360.6213) Fax - 941.355.9241 Jim.Marvel(a)Honeywell.com<mailto:nancy.ramm@honeywell.com>

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Re: [tz] EST/EDT vs AEST/AEDT in AQ [SEC=UNCLASSIFIED]
by Timothy Arceri April 18, 2013

April 18, 2013

>From: tobias.conradi(a)gmail.com [mailto:tobias.conradi@gmail.com] On Behalf Of Tobias Conradi > >>> This is a vote to use AEST/AEDT, or switch completely to Internationalized time point unique abbreviations. >> >> I have been very clear since my very first email that may main concern is with the daylight savings abbreviations. >>Again switching completely to Internationalized time point unique abbreviations is outside the scope of the tz database. >Again? Where did you say it is outside the scope of the tz database before? >Where is the scope defined to have EDT? Going for "out of scope" >without citing policy looks like trying to conceal that fact that it is only outside your scope. For the scope of changes that can be made to the tz database please read: http://www.iana.org/go/rfc6557 No one is trying to conceal anything I'm simply following the procedures outlined in that document. > You seem to not care about anything outside Australia and deteriorating the database by introducing new meanings of D is not problem for you. I can accuse you of trying to introduce a new meaning to Australians. Please show me where it says that we must use the abbreviations used elsewhere in the database. Your own table shows that the abbreviations letters can mean different things. AGAIN you are trying to enforce unique and standardised abbreviations, as I have said this would be great if the world as a whole decided to use such standards but there is no such thing currently, if I'm wrong please enlighten me. Again: "Changes to existing entries SHALL reflect the consensus on the ground in the region covered by that entry." >> We are simply trying to get the daylight savings abbreviations changed >> to what is *actually* used in Australia. >Macquarie Island in the IANA time zone database is AQ and not Australia. Macquarie island is part of Australia: http://en.wikipedia.org/wiki/Macquarie_Island Timothy Arceri

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Request to apply patch for Russian Siberia and create Asia/Tomsk Asia/Barnaul
by Tobias Conradi April 18, 2013

April 18, 2013

Patch was mailed 2012-05-05 http://mm.icann.org/pipermail/tz/2012-May/017696.html -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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[PATCH0/1] Propose new zone for Crozet Islands
by Antoine Leca April 18, 2013

April 18, 2013

Hi Paul, I also have a patch submitted some time ago which seems to have been forgotten. I reworked it to match git workflow. For easier work, I have also put it as a new branch on my github repository: https://github.com/antoineL/tz/commits/crozet About the content from the former discussion <http://mm.icann.org/pipermail/tz/2012-May/017804.html> that I scrapped from the commit message, there were a reference to an official reference (in French) that can be read at the bottom of page 30 of <http://www.taaf.fr/IMG/pdf/guidehivernant2011.pdf< (taaf.fr is the official site of the territory), which spells the rules using the old GMT+4 moniker, and as a reference to the Europe/Paris rules. Since that URL is likely to change (!) you might want to refer to http://www.taaf.fr instead; or just drop it completely, which was my option. Antoine

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Re: [tz] EST/EDT vs AEST/AEDT in AQ [SEC=UNCLASSIFIED]
by Tobias Conradi April 18, 2013

April 18, 2013

On Wed, Apr 17, 2013 at 10:07 PM, Garrett Wollman <wollman(a)csail.mit.edu> wrote: > <<On Wed, 17 Apr 2013 21:22:47 +0200, Tobias Conradi <mail.2012(a)tobiasconradi.com> said: > >>> It is entirely unimportant to "avoid ambiguity". >> How did you come to this conclusion? > > By watching you make an ass of yourself. How is that relevant for the IANA time zone database? -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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Abreviation(s) for Daylight Saving Time in Australia [SEC=UNCLASSIFIED]
by Peter Stagg April 18, 2013

April 18, 2013

I have one simple question that I'm hoping to get a straight forward answer to. Has enough been done by Timothy, Myself and other contributors to convince the coordinators that the current situation where Daylight Saving Time (for Australian time zones) is abbreviated as ST = Summer Time is in error and should be changed? Regards, Peter Stagg | Web Developer, Radar Systems Bureau of Meteorology Australian Meteorological Data Information Services System (AMDISS) Bureau of Meteorology GPO Box 1289 Melbourne VIC 3001 Level 6, 700 Collins Street, Docklands VIC 3008 Tel: +61 3 9669 4232 | Fax: +61 3 9669 4128 www.bom.gov.au

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Re: [tz] EST/EDT vs AEST/AEDT in AQ [SEC=UNCLASSIFIED]
by Tobias Conradi April 17, 2013

April 17, 2013

On Wed, Apr 17, 2013 at 8:53 PM, Garrett Wollman <wollman(a)csail.mit.edu> wrote: > <<On Wed, 17 Apr 2013 20:38:42 +0200, Tobias Conradi <mail.2012(a)tobiasconradi.com> said: > > >> And one of them is important to avoid ambiguity (D means 1:00) and the >> other (1:00 has to be D) is not. > > It is entirely unimportant to "avoid ambiguity". How did you come to this conclusion? -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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Complete list of IANA time zone abbreviations
by Tobias Conradi April 16, 2013

April 16, 2013

Is a complete list of IANA time zone abbreviations available in the WWW? I found: * http://en.wikipedia.org/wiki/List_of_time_zone_abbreviations * http://www.timeanddate.com/library/abbreviations/timezones/ * http://www.timegenie.com/timezones.php All list ACDT which, as of today, is not an IANA abbreviation, so these listings are not what I am looking for. -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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Suggesting an ISO standard for time zone identification - possible replacement of IANA abbreviations
by Tobias Conradi April 16, 2013

April 16, 2013

Dear Mr. Carpenter, this email is send to you, because you are listed as the secretary for the "TC 46/SC 9 Identification and description". Maybe you can forward it to the relevant office or tell me where else I can email to. I suggest that the ISO creates an ISO standard for time zone identification. Current abbreviations in the IANA time zone database are ambiguous, e.g. IST may refer to Israel Standard Time or India Standard Time. The standard could be used in the IANA time zone database and projects that collect time zone related data, e.g. laws and translations of names. Since time zone law is country related one could look whether ISO 3166 can be used. The IANA time zone database has the stated aim of being correct for all regions in the world after the year 1970. Although the earliest ISO 3166 country code standard on the ISO website is ISO 3166:1981, web search for ISO 3166 1974 gives several hits claiming the first publication was in 1974. If there have been countries between 1970 and 1974 that have no ISO 3166 code one can use codes from the user-assigned code space. So the first two letters might be ISO 3166-1 alpha-2 country code based. But I suggest checking whether the alpha-3 codes or numeric codes are a better fit. Further letters may then mark regions inside a country and special restricted time shifts, e.g. daylight saving time. Such a structured set could look like: AUEDT - Australia Eastern Daylight saving Time AUCDT - United States Central Daylight saving Time AUWDT - Australia Western Daylight saving Time EUEDT - EU Eastern Daylight saving Time EUCDT - EU Central Daylight saving Time EUWDT - EU Western Daylight saving Time IDEST - Indonesia Eastern Standard Time IDCST - Indonesia Central Standard Time IDWST - Indonesia Western Standard Time USEDT - United States Eastern Daylight saving Time USCDT - United States Central Daylight saving Time USPDT - United States Pacific Daylight saving Time Kind regards Tobias Conradi -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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Palestine DST starts on 2013-03-29
by Steffen Thorsen April 15, 2013

April 15, 2013

The following news sources tells that Palestine will " start daylight saving time from midnight on Friday, March 29, 2013" (translated). http://www.samanews.com/index.php?act=Show&id=154120 (Gaza) http://safa.ps/details/news/99844/%D8%B1%D8%A7%D9%85-%D8%A7%D9%84%D9%84%D9%… (Ramallah, West Bank) No end date given, but we assume it will end the last Sunday of September. Our background info: http://www.timeanddate.com/news/time/palestine-starts-dst-2013.html Best regards, Steffen Thorsen - timeanddate.com

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morroco in summer time the 28th april
by Sebastien WILLEMIJNS April 13, 2013

April 13, 2013

Hello, Morocco was a thread here so i speak again about it / saw on google: http://www.lemag.ma/Le-Maroc-passe-a-l-heure-d-ete-le-dimanche-28-avril_a69… H+60 the 28th april at 2am. this time will be suspended during the ramadan month.

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Patch use LHDT/LHST/LHHDT since HD HS DD DS are common practice
by Tobias Conradi April 13, 2013

April 13, 2013

Patch australasia.20130411.withLHHDT is linked from http://anna.info/wiki/ANNA_time_zone_database - I don't link to the actual location, because that may change. And I don't email, because I don't know what the email client does with the file. The patch includes AEST/AEDT ACST/ACDT AWST/AWDT CWST/CWDT LHDT/LHST/LHHDT -------- The bom.gov.au-patch introduces new syntax, which for itself might be fine, but this new syntax is less informative than the established one and might be seen as deterioration to the whole database. No single use of single "D" for non-1:00 saving has been found by me. There is one single "D" in a LHDT but there it referred to a 1:00 saving. Be consistent, apply common practice established by the maintainers and use: HD 0:30 LHHDT Australia/Lord_Howe For non 1:00 DST offsets the database contains: DD 2:00 NDDT America/St_Johns IDDT Asia/Jerusalem DS 2:00 MDST - Moscow Double Summer Time, BDST - British Double Summer Time HD 0:30 CHDT America/Belize CHDT EHDT America/Santo_Domingo HS 0:30 UYHST America/Montevideo IHST Asia/Colombo CKHST Pacific/Rarotonga HS 0:20 GHST Africa/Accra -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com/

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Re: [tz] [PATCH 0/2] Follow Australian common usage and update CST/CST to CST/CDT and EST/EST to EST/EDT etc [SEC=UNCLASSIFIED]
by Peter Stagg April 12, 2013

April 12, 2013

I would like to offer (again) the following evidence in support of Timothy's request for a patch to eliminate the ambiguous time zone abbreviations from the TZ Database. The assertion from John Mackin that "We in Australia have _never_ referred to DST as `daylight' time." is patently untrue - the video from four corners (posted previously - see below) is clear evidence that the term is used and has been in use since well before John Mackin's statement from 1991. Language is a living thing it changes and evolves over time so it is possible that in 1991 "summer time" was in vogue. It is also possible that John Mackin comes from the culture of British migrants that may well have used this term due to their British heritage. Either way the Google searches of government web sites show that the phrase "daylight saving" is used, formally, more frequently then "summer time". There are many problems with searching the broader context of .au web sites for frequency of use of "EST" vs. "EDT" and "summer time" vs. "daylight saving": "EST" vs. "EDT" Only tree of the four states in the "Eastern Standard Timezone" have daylight savings and they only have it for aprox. four of the twelve months in the year. And as someone pointed out before many web sites unwittingly use the TZ Database data to automatically timestamp pages. So the frequency of use of "EST" is destined to be much higher then "EDT" and therefore the search is meaningless. "summer time" vs. "daylight saving" "daylight saving" has, pretty much, one unambiguous meaning where as "summer time" (summertime) has so many that have nothing what so ever to do with "daylight saving": - "Summertime" is an aria composed by George Gershwin for the 1935 opera Porgy and Bess. - Summertime is a 1955 American/British Technicolor drama film directed by David Lean - May refer to "British summer time"; given Australia's long association with the mother country old newspapers etc. online often refer to "British summer time" - It may refer to (as it does in many countries) the *seasonal* time of summer as in "summer time and the living is easy". As evidence of this I searched Trove (the National Library of Australia's online collection of digitised Newspapers etc.) <http://trove.nla.gov.au> for these phrases separately "EST", "EDT", "summer time" and "daylight saving". I searched only Australian content and only the Digitised newspapers section, the results were as follows: "EST" = 2,049,093 "EDT" = 27,401 "Summer time" = 55,120 "daylight saving" = 11,960 The only one of these which returns relatively unambiguous results is "daylight saving" and here is why: The first full page of the search for "EST" does not contain a single reference to time. "EST" (Est.) is a very commonly used abbreviation for Established for one thing. "EDT" is just as ambiguous. "daylight saving", is much less ambiguous all-though searching for it will return the likes of "Nothing but fair weather and daylight saved". The earliest use of the term (we never use) is in 1908 referring to the "Daylight Saving Bill" it is referred to in more than a dozen daily newspapers of the time. "Mr. Robert Pearce, tbe member for the Leek division of Staffordshire, is a humorist. To the intense amusement of the House the other day he gravely introducedva measure called the "Daylight_ Saving Bill," by which he proposes, bv an ingenious juggling with' the hoursof the clock, to actually give us more daylight! Mr. Pcarce's project is on the first four Sundays in April to put on the clock 20 minutes between 2 a.m. and 3 p.m., each hour, therefore consisting of only 40 minutes. Similarly it is propo^d in September that the same hour in the morning should consist of 80 minutes. The annual gain of daylight Mr. Pearce esti-mates at 210 hours." [sic.] "Summer time" very rarely refers to Australian "daylight saving time" as can be seen from a selection of results from the first page of the search... ----- Sunday Times (Perth, WA : 1902 - 1954) Sunday 2 November 1947 p 2 Article ... Summertime LONDON, Sat: British summertime time ends tomorrow, when G.M.T. will be restored. Change officially occurs at 3.30 a.m. ----- The Daily News (Perth, WA : 1882 - 1950) Saturday 22 August 1936 Edition: GOLDFIELDS EDITION p 16 Article ... Summertime Summertime is coming near; I heard a blowfly yesterday. Mosquitoes buzzing here and there Are signs that summer's on the way. People talk about the flowers In bloom, and skies of azure blue. I can tell that winter's hours Are few another way, can't you? Winter jumpers are not seen So ... ----- Examiner (Launceston, Tas. : 1900 - 1954) Saturday 24 February 1917 Edition: DAILY p 7 Article ... SUMMER TIME. It is understood that the Government will introduce summer time to operate between April 8 and September 23. ... ----- Oh. Before you jump on that last one look at the dates then realise that it was in a section of the paper headed "British Parliament." In conclusion there is little real unambiguous evidence out there that prooves "summer time" is more commonly used in Australia *to refer to* "Daylight Saving(s) Time" than the phrase "Daylight Saving(s) Time". In actual fact there is more evidence to prove the oposite. Formally the majority of Australian government websites refer to "Daylight Saving(s) Time" and this is the part of the TZ Database that we Australian users disagree with and wish to have changed. ----- search: legislation "standard time" "daylight saving" site:.gov.au About 25,600 results (0.21 seconds) search: legislation "standard time" "summer time" site:.gov.au About 15,600 results (0.14 seconds) N.B. ".gov.au" searches all state and federal official sites as they all use this domain. (e.g. Federal = just .gov.au, State i.e. Victoria = .vic.gov.au ). ----- An interesting video from the 1970's Four Corners program on the ABC (Australia's national broadcaster, ICYDK) on the introduction of "Daylight Saving" in Tasmania. Note the consistent use of that term "Daylight Saving", "Summer Time" is never mentioned (FYI It's a predominantly British term) and take a look at the flight attendant's bonnet! http://www.abc.net.au/archives/80days/stories/2012/01/19/3415208.htm Regards, Peter Stagg Web Developer - Radar Systems, AMDIS, +61 3 9669-4232, www.bom.gov.au ----- Date: Thu, 11 Apr 2013 09:50:04 +1000 From: Timothy Arceri <T.Arceri(a)bom.gov.au> Subject: [tz] [PATCH 0/2] Follow Australian common usage and update CST/CST to CST/CDT and EST/EST to EST/EDT etc [SEC=UNCLASSIFIED] To: "'tz(a)iana.org' (tz(a)iana.org)" <tz(a)iana.org> Message-ID: <7F491A8A71010C4E8B0266E3478C047A0220B1760322(a)BOM-VMBX-HO.bom.gov.au> Content-Type: text/plain; charset="us-ascii" <delitia> The reason for the current situation is documented in the Australasia data file: >From John Mackin (1991-03-06): "We in Australia have _never_ referred to DST as `daylight' time. It is called `summer' time. Now by a happy coincidence, `summer' and `standard' happen to start with the same letter; hence, the abbreviation does _not_ change..." -----

9 17

Gaza DST
by Keith Harris April 12, 2013

April 12, 2013

Hi All, Sorry I couldn't find a way to bump this issue via the original thread. Just wondering what the latest is on getting this change released. I've tested the latest version of the db from the repository and it has jodatime reporting the correct time for Gaza today. Be great to get this in place as I've got people missing their conference calls by an hour! (Thanks so much for all the hard work by everyone on the list - wonderful to see at least one bit of the world's technology just working the way it should :-D ) Keith Harris SoftlySoftware <http://softlysoftware.com>

2 1

Macquarie Island - ISO 3166-1 code AQ vs AU
by Tobias Conradi April 12, 2013

April 12, 2013

Was Re: [tz] EST/EDT vs AEST/AEDT in AQ [SEC=UNCLASSIFIED] I think the research for the correct ISO country for Macquarie Island is easier followable if kept in a separate thread. On Fri, Apr 12, 2013 at 10:45 AM, Tobias Conradi <mail.2012(a)tobiasconradi.com> wrote: > On Fri, Apr 12, 2013 at 5:35 AM, Timothy Arceri <T.Arceri(a)bom.gov.au> wrote: >>>From: tobias.conradi(a)gmail.com [mailto:tobias.conradi@gmail.com] On Behalf Of Tobias >>>> We are simply trying to get the daylight savings abbreviations changed >>>> to what is *actually* used in Australia. >>>Macquarie Island in the IANA time zone database is AQ and not Australia. >> >> Macquarie island is part of Australia: http://en.wikipedia.org/wiki/Macquarie_Island > > In Wikipedia, not in the IANA time zone database. > > ftp://ftp.iana.org/tz/data/zone.tab > > AQ -5430+15857 Antarctica/Macquarie Macquarie Island Station, Macquarie Island http://en.wikipedia.org/wiki/Macquarie_Island categorized as belonging to Tasmania, which in turn is given as part of Australia. What is the reason to have Macquarie Island as AQ Antartica in the IANA time zone database? -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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[PATCH 1/2] Follow Australian common usage and update CST/CST to CST/CDT and EST/EST to EST/EDT etc [SEC=UNCLASSIFIED]
by Timothy Arceri April 12, 2013

April 12, 2013

--- australasia 2013-02-21 07:00:40.000000000 +0000 +++ australasia_new 2013-04-10 00:39:26.000000000 +0000 @@ -13,13 +13,13 @@ # Please see the notes below for the controversy about "EST" versus "AEST" etc. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule Aus 1917 only - Jan 1 0:01 1:00 - -Rule Aus 1917 only - Mar 25 2:00 0 - -Rule Aus 1942 only - Jan 1 2:00 1:00 - -Rule Aus 1942 only - Mar 29 2:00 0 - -Rule Aus 1942 only - Sep 27 2:00 1:00 - -Rule Aus 1943 1944 - Mar lastSun 2:00 0 - -Rule Aus 1943 only - Oct 3 2:00 1:00 - +Rule Aus 1917 only - Jan 1 0:01 1:00 D +Rule Aus 1917 only - Mar 25 2:00 0 S +Rule Aus 1942 only - Jan 1 2:00 1:00 D +Rule Aus 1942 only - Mar 29 2:00 0 S +Rule Aus 1942 only - Sep 27 2:00 1:00 D +Rule Aus 1943 1944 - Mar lastSun 2:00 0 S +Rule Aus 1943 only - Oct 3 2:00 1:00 D # Go with Whitman and the Australian National Standards Commission, which # says W Australia didn't use DST in 1943/1944. Ignore Whitman's claim that # 1944/1945 was just like 1943/1944. @@ -28,25 +28,25 @@ # Northern Territory Zone Australia/Darwin 8:43:20 - LMT 1895 Feb 9:00 - CST 1899 May - 9:30 Aus CST + 9:30 Aus C%sT # Western Australia # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule AW 1974 only - Oct lastSun 2:00s 1:00 - -Rule AW 1975 only - Mar Sun>=1 2:00s 0 - -Rule AW 1983 only - Oct lastSun 2:00s 1:00 - -Rule AW 1984 only - Mar Sun>=1 2:00s 0 - -Rule AW 1991 only - Nov 17 2:00s 1:00 - -Rule AW 1992 only - Mar Sun>=1 2:00s 0 - -Rule AW 2006 only - Dec 3 2:00s 1:00 - -Rule AW 2007 2009 - Mar lastSun 2:00s 0 - -Rule AW 2007 2008 - Oct lastSun 2:00s 1:00 - +Rule AW 1974 only - Oct lastSun 2:00s 1:00 D +Rule AW 1975 only - Mar Sun>=1 2:00s 0 S +Rule AW 1983 only - Oct lastSun 2:00s 1:00 D +Rule AW 1984 only - Mar Sun>=1 2:00s 0 S +Rule AW 1991 only - Nov 17 2:00s 1:00 D +Rule AW 1992 only - Mar Sun>=1 2:00s 0 S +Rule AW 2006 only - Dec 3 2:00s 1:00 D +Rule AW 2007 2009 - Mar lastSun 2:00s 0 S +Rule AW 2007 2008 - Oct lastSun 2:00s 1:00 D Zone Australia/Perth 7:43:24 - LMT 1895 Dec - 8:00 Aus WST 1943 Jul - 8:00 AW WST + 8:00 Aus W%sT 1943 Jul + 8:00 AW W%sT Zone Australia/Eucla 8:35:28 - LMT 1895 Dec - 8:45 Aus CWST 1943 Jul - 8:45 AW CWST + 8:45 Aus CW%sT 1943 Jul + 8:45 AW CW%sT # Queensland # @@ -62,42 +62,42 @@ # so use Lindeman. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule AQ 1971 only - Oct lastSun 2:00s 1:00 - -Rule AQ 1972 only - Feb lastSun 2:00s 0 - -Rule AQ 1989 1991 - Oct lastSun 2:00s 1:00 - -Rule AQ 1990 1992 - Mar Sun>=1 2:00s 0 - -Rule Holiday 1992 1993 - Oct lastSun 2:00s 1:00 - -Rule Holiday 1993 1994 - Mar Sun>=1 2:00s 0 - +Rule AQ 1971 only - Oct lastSun 2:00s 1:00 D +Rule AQ 1972 only - Feb lastSun 2:00s 0 S +Rule AQ 1989 1991 - Oct lastSun 2:00s 1:00 D +Rule AQ 1990 1992 - Mar Sun>=1 2:00s 0 S +Rule Holiday 1992 1993 - Oct lastSun 2:00s 1:00 D +Rule Holiday 1993 1994 - Mar Sun>=1 2:00s 0 S Zone Australia/Brisbane 10:12:08 - LMT 1895 - 10:00 Aus EST 1971 - 10:00 AQ EST + 10:00 Aus E%sT 1971 + 10:00 AQ E%sT Zone Australia/Lindeman 9:55:56 - LMT 1895 - 10:00 Aus EST 1971 - 10:00 AQ EST 1992 Jul - 10:00 Holiday EST + 10:00 Aus E%sT 1971 + 10:00 AQ E%sT 1992 Jul + 10:00 Holiday E%sT # South Australia # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule AS 1971 1985 - Oct lastSun 2:00s 1:00 - -Rule AS 1986 only - Oct 19 2:00s 1:00 - -Rule AS 1987 2007 - Oct lastSun 2:00s 1:00 - -Rule AS 1972 only - Feb 27 2:00s 0 - -Rule AS 1973 1985 - Mar Sun>=1 2:00s 0 - -Rule AS 1986 1990 - Mar Sun>=15 2:00s 0 - -Rule AS 1991 only - Mar 3 2:00s 0 - -Rule AS 1992 only - Mar 22 2:00s 0 - -Rule AS 1993 only - Mar 7 2:00s 0 - -Rule AS 1994 only - Mar 20 2:00s 0 - -Rule AS 1995 2005 - Mar lastSun 2:00s 0 - -Rule AS 2006 only - Apr 2 2:00s 0 - -Rule AS 2007 only - Mar lastSun 2:00s 0 - -Rule AS 2008 max - Apr Sun>=1 2:00s 0 - -Rule AS 2008 max - Oct Sun>=1 2:00s 1:00 - +Rule AS 1971 1985 - Oct lastSun 2:00s 1:00 D +Rule AS 1986 only - Oct 19 2:00s 1:00 D +Rule AS 1987 2007 - Oct lastSun 2:00s 1:00 D +Rule AS 1972 only - Feb 27 2:00s 0 S +Rule AS 1973 1985 - Mar Sun>=1 2:00s 0 S +Rule AS 1986 1990 - Mar Sun>=15 2:00s 0 S +Rule AS 1991 only - Mar 3 2:00s 0 S +Rule AS 1992 only - Mar 22 2:00s 0 S +Rule AS 1993 only - Mar 7 2:00s 0 S +Rule AS 1994 only - Mar 20 2:00s 0 S +Rule AS 1995 2005 - Mar lastSun 2:00s 0 S +Rule AS 2006 only - Apr 2 2:00s 0 S +Rule AS 2007 only - Mar lastSun 2:00s 0 S +Rule AS 2008 max - Apr Sun>=1 2:00s 0 S +Rule AS 2008 max - Oct Sun>=1 2:00s 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Australia/Adelaide 9:14:20 - LMT 1895 Feb 9:00 - CST 1899 May - 9:30 Aus CST 1971 - 9:30 AS CST + 9:30 Aus C%sT 1971 + 9:30 AS C%sT # Tasmania # @@ -106,106 +106,106 @@ # says King Island didn't observe DST from WWII until late 1971. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule AT 1967 only - Oct Sun>=1 2:00s 1:00 - -Rule AT 1968 only - Mar lastSun 2:00s 0 - -Rule AT 1968 1985 - Oct lastSun 2:00s 1:00 - -Rule AT 1969 1971 - Mar Sun>=8 2:00s 0 - -Rule AT 1972 only - Feb lastSun 2:00s 0 - -Rule AT 1973 1981 - Mar Sun>=1 2:00s 0 - -Rule AT 1982 1983 - Mar lastSun 2:00s 0 - -Rule AT 1984 1986 - Mar Sun>=1 2:00s 0 - -Rule AT 1986 only - Oct Sun>=15 2:00s 1:00 - -Rule AT 1987 1990 - Mar Sun>=15 2:00s 0 - -Rule AT 1987 only - Oct Sun>=22 2:00s 1:00 - -Rule AT 1988 1990 - Oct lastSun 2:00s 1:00 - -Rule AT 1991 1999 - Oct Sun>=1 2:00s 1:00 - -Rule AT 1991 2005 - Mar lastSun 2:00s 0 - -Rule AT 2000 only - Aug lastSun 2:00s 1:00 - -Rule AT 2001 max - Oct Sun>=1 2:00s 1:00 - -Rule AT 2006 only - Apr Sun>=1 2:00s 0 - -Rule AT 2007 only - Mar lastSun 2:00s 0 - -Rule AT 2008 max - Apr Sun>=1 2:00s 0 - +Rule AT 1967 only - Oct Sun>=1 2:00s 1:00 D +Rule AT 1968 only - Mar lastSun 2:00s 0 S +Rule AT 1968 1985 - Oct lastSun 2:00s 1:00 D +Rule AT 1969 1971 - Mar Sun>=8 2:00s 0 S +Rule AT 1972 only - Feb lastSun 2:00s 0 S +Rule AT 1973 1981 - Mar Sun>=1 2:00s 0 S +Rule AT 1982 1983 - Mar lastSun 2:00s 0 S +Rule AT 1984 1986 - Mar Sun>=1 2:00s 0 S +Rule AT 1986 only - Oct Sun>=15 2:00s 1:00 D +Rule AT 1987 1990 - Mar Sun>=15 2:00s 0 S +Rule AT 1987 only - Oct Sun>=22 2:00s 1:00 D +Rule AT 1988 1990 - Oct lastSun 2:00s 1:00 D +Rule AT 1991 1999 - Oct Sun>=1 2:00s 1:00 D +Rule AT 1991 2005 - Mar lastSun 2:00s 0 S +Rule AT 2000 only - Aug lastSun 2:00s 1:00 D +Rule AT 2001 max - Oct Sun>=1 2:00s 1:00 D +Rule AT 2006 only - Apr Sun>=1 2:00s 0 S +Rule AT 2007 only - Mar lastSun 2:00s 0 S +Rule AT 2008 max - Apr Sun>=1 2:00s 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Australia/Hobart 9:49:16 - LMT 1895 Sep 10:00 - EST 1916 Oct 1 2:00 - 10:00 1:00 EST 1917 Feb - 10:00 Aus EST 1967 - 10:00 AT EST + 10:00 1:00 EDT 1917 Feb + 10:00 Aus E%sT 1967 + 10:00 AT E%sT Zone Australia/Currie 9:35:28 - LMT 1895 Sep 10:00 - EST 1916 Oct 1 2:00 - 10:00 1:00 EST 1917 Feb - 10:00 Aus EST 1971 Jul - 10:00 AT EST + 10:00 1:00 EDT 1917 Feb + 10:00 Aus E%sT 1971 Jul + 10:00 AT E%sT # Victoria # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule AV 1971 1985 - Oct lastSun 2:00s 1:00 - -Rule AV 1972 only - Feb lastSun 2:00s 0 - -Rule AV 1973 1985 - Mar Sun>=1 2:00s 0 - -Rule AV 1986 1990 - Mar Sun>=15 2:00s 0 - -Rule AV 1986 1987 - Oct Sun>=15 2:00s 1:00 - -Rule AV 1988 1999 - Oct lastSun 2:00s 1:00 - -Rule AV 1991 1994 - Mar Sun>=1 2:00s 0 - -Rule AV 1995 2005 - Mar lastSun 2:00s 0 - -Rule AV 2000 only - Aug lastSun 2:00s 1:00 - -Rule AV 2001 2007 - Oct lastSun 2:00s 1:00 - -Rule AV 2006 only - Apr Sun>=1 2:00s 0 - -Rule AV 2007 only - Mar lastSun 2:00s 0 - -Rule AV 2008 max - Apr Sun>=1 2:00s 0 - -Rule AV 2008 max - Oct Sun>=1 2:00s 1:00 - +Rule AV 1971 1985 - Oct lastSun 2:00s 1:00 D +Rule AV 1972 only - Feb lastSun 2:00s 0 S +Rule AV 1973 1985 - Mar Sun>=1 2:00s 0 S +Rule AV 1986 1990 - Mar Sun>=15 2:00s 0 S +Rule AV 1986 1987 - Oct Sun>=15 2:00s 1:00 D +Rule AV 1988 1999 - Oct lastSun 2:00s 1:00 D +Rule AV 1991 1994 - Mar Sun>=1 2:00s 0 S +Rule AV 1995 2005 - Mar lastSun 2:00s 0 S +Rule AV 2000 only - Aug lastSun 2:00s 1:00 D +Rule AV 2001 2007 - Oct lastSun 2:00s 1:00 D +Rule AV 2006 only - Apr Sun>=1 2:00s 0 S +Rule AV 2007 only - Mar lastSun 2:00s 0 S +Rule AV 2008 max - Apr Sun>=1 2:00s 0 S +Rule AV 2008 max - Oct Sun>=1 2:00s 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Australia/Melbourne 9:39:52 - LMT 1895 Feb - 10:00 Aus EST 1971 - 10:00 AV EST + 10:00 Aus E%sT 1971 + 10:00 AV E%sT # New South Wales # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule AN 1971 1985 - Oct lastSun 2:00s 1:00 - -Rule AN 1972 only - Feb 27 2:00s 0 - -Rule AN 1973 1981 - Mar Sun>=1 2:00s 0 - -Rule AN 1982 only - Apr Sun>=1 2:00s 0 - -Rule AN 1983 1985 - Mar Sun>=1 2:00s 0 - -Rule AN 1986 1989 - Mar Sun>=15 2:00s 0 - -Rule AN 1986 only - Oct 19 2:00s 1:00 - -Rule AN 1987 1999 - Oct lastSun 2:00s 1:00 - -Rule AN 1990 1995 - Mar Sun>=1 2:00s 0 - -Rule AN 1996 2005 - Mar lastSun 2:00s 0 - -Rule AN 2000 only - Aug lastSun 2:00s 1:00 - -Rule AN 2001 2007 - Oct lastSun 2:00s 1:00 - -Rule AN 2006 only - Apr Sun>=1 2:00s 0 - -Rule AN 2007 only - Mar lastSun 2:00s 0 - -Rule AN 2008 max - Apr Sun>=1 2:00s 0 - -Rule AN 2008 max - Oct Sun>=1 2:00s 1:00 - +Rule AN 1971 1985 - Oct lastSun 2:00s 1:00 D +Rule AN 1972 only - Feb 27 2:00s 0 S +Rule AN 1973 1981 - Mar Sun>=1 2:00s 0 S +Rule AN 1982 only - Apr Sun>=1 2:00s 0 S +Rule AN 1983 1985 - Mar Sun>=1 2:00s 0 S +Rule AN 1986 1989 - Mar Sun>=15 2:00s 0 S +Rule AN 1986 only - Oct 19 2:00s 1:00 D +Rule AN 1987 1999 - Oct lastSun 2:00s 1:00 D +Rule AN 1990 1995 - Mar Sun>=1 2:00s 0 S +Rule AN 1996 2005 - Mar lastSun 2:00s 0 S +Rule AN 2000 only - Aug lastSun 2:00s 1:00 D +Rule AN 2001 2007 - Oct lastSun 2:00s 1:00 D +Rule AN 2006 only - Apr Sun>=1 2:00s 0 S +Rule AN 2007 only - Mar lastSun 2:00s 0 S +Rule AN 2008 max - Apr Sun>=1 2:00s 0 S +Rule AN 2008 max - Oct Sun>=1 2:00s 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Australia/Sydney 10:04:52 - LMT 1895 Feb - 10:00 Aus EST 1971 - 10:00 AN EST + 10:00 Aus E%sT 1971 + 10:00 AN E%sT Zone Australia/Broken_Hill 9:25:48 - LMT 1895 Feb 10:00 - EST 1896 Aug 23 9:00 - CST 1899 May - 9:30 Aus CST 1971 - 9:30 AN CST 2000 - 9:30 AS CST + 9:30 Aus C%sT 1971 + 9:30 AN C%sT 2000 + 9:30 AS C%sT # Lord Howe Island # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule LH 1981 1984 - Oct lastSun 2:00 1:00 - -Rule LH 1982 1985 - Mar Sun>=1 2:00 0 - -Rule LH 1985 only - Oct lastSun 2:00 0:30 - -Rule LH 1986 1989 - Mar Sun>=15 2:00 0 - -Rule LH 1986 only - Oct 19 2:00 0:30 - -Rule LH 1987 1999 - Oct lastSun 2:00 0:30 - -Rule LH 1990 1995 - Mar Sun>=1 2:00 0 - -Rule LH 1996 2005 - Mar lastSun 2:00 0 - -Rule LH 2000 only - Aug lastSun 2:00 0:30 - -Rule LH 2001 2007 - Oct lastSun 2:00 0:30 - -Rule LH 2006 only - Apr Sun>=1 2:00 0 - -Rule LH 2007 only - Mar lastSun 2:00 0 - -Rule LH 2008 max - Apr Sun>=1 2:00 0 - -Rule LH 2008 max - Oct Sun>=1 2:00 0:30 - +Rule LH 1981 1984 - Oct lastSun 2:00 1:00 D +Rule LH 1982 1985 - Mar Sun>=1 2:00 0 S +Rule LH 1985 only - Oct lastSun 2:00 0:30 D +Rule LH 1986 1989 - Mar Sun>=15 2:00 0 S +Rule LH 1986 only - Oct 19 2:00 0:30 D +Rule LH 1987 1999 - Oct lastSun 2:00 0:30 D +Rule LH 1990 1995 - Mar Sun>=1 2:00 0 S +Rule LH 1996 2005 - Mar lastSun 2:00 0 S +Rule LH 2000 only - Aug lastSun 2:00 0:30 D +Rule LH 2001 2007 - Oct lastSun 2:00 0:30 D +Rule LH 2006 only - Apr Sun>=1 2:00 0 S +Rule LH 2007 only - Mar lastSun 2:00 0 S +Rule LH 2008 max - Apr Sun>=1 2:00 0 S +Rule LH 2008 max - Oct Sun>=1 2:00 0:30 D Zone Australia/Lord_Howe 10:36:20 - LMT 1895 Feb 10:00 - EST 1981 Mar - 10:30 LH LHST + 10:30 LH LH%sT # Australian miscellany # @@ -841,39 +841,15 @@ # Implementation Dates of Daylight Saving Time within Australia # </a> summarizes daylight saving issues in Australia. -# From Arthur David Olson (2005-12-12): -# <a href="http://www.lawlink.nsw.gov.au/lawlink/Corporate/ll_agdinfo.nsf/pages/commun…"> -# Lawlink NSW:Daylight Saving in New South Wales -# </a> covers New South Wales in particular. - -# From John Mackin (1991-03-06): -# We in Australia have _never_ referred to DST as `daylight' time. -# It is called `summer' time. Now by a happy coincidence, `summer' -# and `standard' happen to start with the same letter; hence, the -# abbreviation does _not_ change... -# The legislation does not actually define abbreviations, at least -# in this State, but the abbreviation is just commonly taken to be the -# initials of the phrase, and the legislation here uniformly uses -# the phrase `summer time' and does not use the phrase `daylight -# time'. -# Announcers on the Commonwealth radio network, the ABC (for Australian -# Broadcasting Commission), use the phrases `Eastern Standard Time' -# or `Eastern Summer Time'. (Note, though, that as I say in the -# current australasia file, there is really no such thing.) Announcers -# on its overseas service, Radio Australia, use the same phrases -# prefixed by the word `Australian' when referring to local times; -# time announcements on that service, naturally enough, are made in UTC. - -# From Arthur David Olson (1992-03-08): -# Given the above, what's chosen for year-round use is: -# CST for any place operating at a GMTOFF of 9:30 -# WST for any place operating at a GMTOFF of 8:00 -# EST for any place operating at a GMTOFF of 10:00 +# From Timothy Arceri (2013-04-09) +# Webpage that lists the Australian Governments recommended time zone names and abbreviations: +# http://australia.gov.au/about-australia/our-country/time +# +# NSW Goverment time definitions (covers time zones and abbreviations): +# http://www.communityrelations.lawlink.nsw.gov.au/cru/daylight/definitions_o… # From Chuck Soper (2006-06-01): -# I recently found this Australian government web page on time zones: -# <http://www.australia.gov.au/about-australia-13time> -# And this government web page lists time zone names and abbreviations: +# This government web page lists time zone names and abbreviations: # <http://www.bom.gov.au/climate/averages/tables/daysavtm.shtml> # From Paul Eggert (2001-04-05), summarizing a long discussion about "EST" @@ -957,6 +933,33 @@ # saying that both AEST/AEDT and EST/EST are widely used and # understood in Australia. +# From Timothy Arceri (2013-04-09), results from a long discussion about +# "EST" - Eastern Summer Time versus "EDT" - Eastern Daylight Time etc.: +# +# * Do Australians more often use "EDT" or "EST"? +# +# 875,000 "Eastern Standard Time (EST)" site:.au +# 655,000 "Eastern Standard Time (AEST)" site:.au +# +# 6 "Eastern Summer Time (EST)" site:.au +# 64 "Eastern Summer Time (AEST)" site:.au +# 30,500 "Eastern Daylight Time (EDT)" site:.au +# 180,000 "Eastern Daylight Time (AEDT)" site:.au +# +# 357,000 "Central Standard Time (CST)" site:.au +# 316 "Central Standard Time (ACST)" site:.au +# +# 4 "Central Summer Time (CST)" site:.au +# 0 "Central Summer Time (ACST)" site:.au +# +# 19,600 "Central Daylight Time (CDT)" site:.au +# 157 "Central Daylight Time (ACDT)" site:.au +# +# Here we are only looking at cases where the time zone abbreviation +# has been defined. These results show that the abbreviation for Daylight +# time EDT/AEDT/CDT/ACDT is overwhelmingly greater than the usage of the +# abbreviation for Summer time EST/AEST/CST/ACST + # From Paul Eggert (1995-12-19): # Shanks & Pottenger report 2:00 for all autumn changes in Australia and NZ. # Mark Prior writes that his newspaper

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