Propose new zone for Crozet Islands
Current: tzdata2012c/zone.tab only has: TF -492110+0701303 Indian/Kerguelen Note: I couldn't find the rules for Kerguelen, since zone.tab doesn't tell where to look for this and there is no file "indian" like there is "asia" for the zones named "Asia/..." But the rules for Kerguelen are not needed for this proposal. Propose: TF -492110+0701303 Indian/Kerguelen most locations TF -464114+517561 Indian/Crozet Crozet Islands Coordinates are for the center of the biggest island, Possession Island, which is the the Eastern group, which contains also the second biggest island. http://commons.wikimedia.org/wiki/File:Crozet_Map.png Reason: http://www.timegenie.com/country.time/tf - Île Amsterdam, Île Saint–Paul and Îles Kerguelen are all UTC/GMT +5 hours - Îles Crozet is UTC/GMT +4 hours supported by http://fr.wikipedia.org/wiki/%C3%8Eles_Crozet UTC+4 http://fr.wikipedia.org/wiki/%C3%8Eles_Kerguelen UTC+5 -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com/
Tobias Conradi wrote on 2012-05-12 04:04:27 +0200:
Current: tzdata2012c/zone.tab only has: TF -492110+0701303 Indian/Kerguelen
Note: I couldn't find the rules for Kerguelen
The rules are in antartica (since "forever") even if the islands are ruled from Reunion which stands in africa file...
Propose: TF -492110+0701303 Indian/Kerguelen most locations TF -464114+517561 Indian/Crozet Crozet Islands
Coordinates are for the center of the biggest island, Possession Island, which is the the Eastern group, which contains also the second biggest island. http://commons.wikimedia.org/wiki/File:Crozet_Map.png
antartica file have slightly different coordinates (46°S 25' 51", 051°W 51'52") which are the ones for Alfred-Faure base, where most (all?) humans are.
Reason: http://www.timegenie.com/country.time/tf - Île Amsterdam, Île Saint–Paul and Îles Kerguelen are all UTC/GMT +5 hours - Îles Crozet is UTC/GMT +4 hours
I confirm that, and sum to the request to create a new timezone. Crozet Islands have a year-round scientific base (Alfred-Faure) since 1964.
supported by http://fr.wikipedia.org/wiki/%C3%8Eles_Crozet UTC+4 http://fr.wikipedia.org/wiki/%C3%8Eles_Kerguelen UTC+5
A more official reference can be read (in French) at the bottom of page 30 of http://www.taaf.fr/IMG/pdf/guidehivernant2011.pdf, 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 (official site of the territory.) I have no information whether the clocks might have been different from the "natural" UTC+4 time zone (which extends up to 52°W 30') at any moment in the past (long-timers and archivists may record unclear and unchecked informations this about in 1986); so the correct move seems to create a new zone, perhaps along the attached changes (AFT is my invention, anything better will be fine with me; I went with Indian/Alfred_Faure since, unlike Indian/Port_aux_Francais, it fits with the 14-character limit.) Antoine
On Wed, May 23, 2012 at 7:09 PM, Antoine Leca <Antoine-TZ@leca-marti.org> wrote:
Tobias Conradi wrote on 2012-05-12 04:04:27 +0200:
Current: tzdata2012c/zone.tab only has: TF -492110+0701303 Indian/Kerguelen
Note: I couldn't find the rules for Kerguelen
The rules are in antartica (since "forever") even if the islands are ruled from Reunion which stands in africa file... Merci beaucoup.
Propose: TF -492110+0701303 Indian/Kerguelen most locations TF -464114+517561 Indian/Crozet Crozet Islands
Coordinates are for the center of the biggest island, Possession Island, which is the the Eastern group, which contains also the second biggest island. http://commons.wikimedia.org/wiki/File:Crozet_Map.png
antartica file have slightly different coordinates (46°S 25' 51", 051°W 51'52") which are the ones for Alfred-Faure base, where most (all?) humans are.
So maybe a name for the zone that is closer to what the Theory file suggests ----cite----- Keep locations compact. Use cities or small islands, not countries or regions, --------------- is: Indian/Alfred-Faure
I have no information whether the clocks might have been different from the "natural" UTC+4 time zone (which extends up to 52°W 30') at any moment in the past (long-timers and archivists may record unclear and unchecked informations this about in 1986); so the correct move seems to create a new zone, perhaps along the attached changes (AFT is my invention, anything better will be fine with me; TFT, according to widespread use of "<ISO 3166-1 alpha-2>T"
I went with Indian/Alfred_Faure since, unlike Indian/Port_aux_Francais, it fits with the 14-character limit.)
WP is not consistent, article title is http://en.wikipedia.org/wiki/Alfred_Faure but in the article it is "Alfred-Faure" And http://www.geonames.org/maps/google_-46.432_51.862.html gives a) Base Alfred Faure ... scientific research base 0.04 km b) Port-Alfred ... locality 1.95 km -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com/
On Thu, May 24, 2012 at 4:52 AM, Tobias Conradi <tobias.conradi@gmail.com> wrote:
On Wed, May 23, 2012 at 7:09 PM, Antoine Leca <Antoine-TZ@leca-marti.org> wrote:
I have no information whether the clocks might have been different from the "natural" UTC+4 time zone (which extends up to 52°W 30') at any moment in the past (long-timers and archivists may record unclear and unchecked informations this about in 1986); so the correct move seems to create a new zone, perhaps along the attached changes (AFT is my invention, anything better will be fine with me; TFT, according to widespread use of "<ISO 3166-1 alpha-2>T" Withdraw TFT, since with the proposal there are two zones for TF.
ftp://ftp.iana.org/tz/data/antarctica gives Indian/Kerguelen ... TFT so TFT is ambiguous there too. The AFT mentioned by Antoine is used for Afghanistan says ftp://ftp.iana.org/tz/data/asia Fixing the data proposed for zone.tab, using coordinates from ftp://ftp.iana.org/tz/data/antarctica for Crozet Islands: TF -492110+0701303 Indian/Kerguelen most locations TF -462551+0515152 Indian/Alfred-Faure Crozet Islands So maybe for Crozet Islands and Kerguelen Islands TFWT and TFET (West/East) or TFCT and TFKT can be used. I would prefer TFCT and TFKT, which are based on toponyms. But ftp://ftp.iana.org/tz/code/Theory says "When a country has multiple time zones, take the first three letters of an English place name identifying each zone and then append `T', `ST', etc. as before; e.g. `VLAST' for VLAdivostok Summer Time." which would lead to: AFBT - Alfred-Faure Base (Crozet) PAFT - Port-aux-Francais (Kerguelen) The rule in the Theory file can easier lead to double assignments of abbreviations, since a) there seems to be no list in the source code for all abbreviations, and b) the iana.org site seems not to host a tool for online look-up of abbreviations. If instead the first two letters of abbreviations are taken from the ISO 3166-1 alpha-2 code, then double assignments are less likely since they are recorded closer to each other in the source code. -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com/
On Thu, May 24, 2012 at 9:46 AM, Tobias Conradi <tobias.conradi@gmail.com> wrote:
The rule in the Theory file can easier lead to double assignments of abbreviations
I don't think a particular effort is made to make the abbreviations be unique or even particularly meaningful. The main identifier is the "Europe/Berlin" type name, not the "CE(S)T" type one. Cheers, Philip -- Philip Newton <philip.newton@gmail.com>
Tobias Conradi wrote:
On Wed, May 23, 2012 at 7:09 PM, Antoine Leca <Antoine-TZ@leca-marti.org> wrote:
antartica file have slightly different coordinates (46°S 25' 51", 051°W 51'52") which are the ones for Alfred-Faure base, where most (all?) humans are. So maybe a name for the zone that is closer to what the Theory file suggests ----cite----- Keep locations compact. Use cities or small islands, not countries or regions, --------------- is:
Indian/Alfred-Faure I used underline (_) since it was the common use so far.
(AFT is my invention, anything better will be fine with me; TFT, according to widespread use of "<ISO 3166-1 alpha-2>T" ... is already in use for Indian/Kerguelen, and would not be a particularly useful choice here.
I went with Indian/Alfred_Faure since, unlike Indian/Port_aux_Francais, it fits with the 14-character limit.) WP is not consistent, article title is http://en.wikipedia.org/wiki/Alfred_Faure but in the article it is "Alfred-Faure" I do not know the rules for English Wikipedia titles, so perhaps the title is correct. Alfred-Faure, with hyphen, is the French spelling for the name of the base; without the hyphen it would mean the person, here the meteorologist which ruled the team creating the base 50 years ago.
About coordinates, I agree that seconds are somewhat silly, particularly since there is nobody else hundreds of miles around (1 nautical mile is 1 latitude minute.) Then, obviously there is a typo (was mine, 1997-01-20) about the longitude, which ought be 051°W 51' 25", not 52". Thanks for double-checking that. Antoine
On Thu, May 24, 2012 at 11:22 AM, Antoine Leca <Antoine-TZ@leca-marti.org> wrote:
Tobias Conradi wrote:
Indian/Alfred-Faure I used underline (_) since it was the common use so far.
I don't know what "common use" here refers to. ftp://ftp.iana.org/tz/data/zone.tab contains three zone name having "-" America/Blanc-Sablon Africa/Porto-Novo America/Port-au-Prince ftp://ftp.iana.org/tz/code/Theory says "Within a file name component, use only ASCII letters, `.', `-' and `_'." I found none with "." If "-" would be deprecated, there would be no discussion about this. "Alfred Faure base" / "Alfred Faure Base" might be the English name for "base Alfred-Faure". I change my proposal to follow Antoine, with new longitude by Antoine's last email: TF -462551+0515125 Indian/Alfred_Faure Crozet Islands -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com/
I updated the patch according to the remarks done: - I corrected the typo about the longitude; - I used Indian/Alfred-Faure, since there are already some zones with an hyphen, and it seems that using an hyphen is a better (English) spelling. Antoine
participants (3)
-
Antoine Leca -
Philip Newton -
Tobias Conradi