[1] [[電子メイル]]の [CODE(822)[[[Date]]]] 欄その他で用例が発見されている[RUBY[[[時間帯]]][タイム・ゾーン]]をあらわす略語の一覧です。 (プロトコル要素としての略語なので、普通の文章中に出てくるものは含んでいませんが、 (自然な結果として) 日常的に使われる略語も多く含んでいます。) ACSST => [+1, 10, 30], ## Australian Central Summer Standard ACST => [+1, 09, 30], ## Australian Central Standard ADT => [-1, 3, 0], ## (NA)Atlantic Daylight 733 ADT => [-1, 04, 00], ## Brazil Acre Daylight AESST => [+1, 11, 0], ## Australian East Summer Standard AEST => [+1, 10, 0], ## Australian East Standard 豪州東部標準時 AHST => [-1, 10, 0], ## Alaska-Hawaii Standard AKST => [-1, 09, 00], ## Alaska Standard AM => [-1, 00, 00], ## After Morning 午後 AST => [-1, 4, 0], ## (NA)Atlantic Standard 733 AST => [-1, 05, 00], ## Brazil Acre Standard AT => [-1, 2, 0], ## Azores AWSST => [+1, 09, 00], ## Australian West Summer Standard AWST => [+1, 08, 00], ## Australian West Standard BDT => [-1, 10, 0], ## ベーリング夏時間 733 BST => [-1, 11, 0], ## ベーリング標準時 733 BST => [+1, 1, 0], ## British Summer ブリテン夏時間 BST => [-1, 3, 0], ## Brazil Standard BST => [+1, 03, 00], ## Baghdad Standard BT => [+1, 03, 00], ## Baghdad CADT => [+1, 10, 30], ## Central Australian Daylight CAST => [+1, 09, 30], ## Central Australian Standard CAT => [-1, 10, 00], ## Central Alaska CCT => [+1, 08, 00], ## China Coastal CDT => [-1, 05, 00], ## (NA)Central Daylight 733, 822 北米中部夏時間 CDT => [+1, 09, 00], ## People's Republic of China Daylight CDT => [-1, 06, 00], ## Cuba Daylight CDT => [-1, 03, 00], ## Chile Continental Daylight CET => [+1, 1, 0], ## Central European 中欧標準時 CETDST=> [+1, 02, 00], ## Central European Daylight Saving CEST => [+1, 2, 0], ## Central European Daylight CST => [-1, 6, 0], ## (NA)Central Standard 733, 822 CST => [+1, 10, 30], ## Australian Central Standard CST => [+1, 08, 00], ## People's Republic of China Standard CST => [-1, 05, 00], ## Cuba Standard CST => [-1, 04, 00], ## Chile Continental Standard DNT ## Dansk Normal Tid デンマーク標準時 DST => [-1, 00, 00], ## Daylight Saving 夏時間 EADT => [+1, 11, 00], ## Eastern Australian Daylight EAST => [+1, 10, 00], ## Eastern Australian Standard EASTERN ECT => [+1, 1, 0], ## Central European EDT => [-1, 4, 0], ## (NA)Eastern Daylight 733, 822 EDT => [-1, 02, 00], ## Brazil Eastern Daylight EDT => [-1, 05, 00], ## Chile Easter Island Daylight EEST => [+1, 3, 0], ## Eastern European Summer EET => [+1, 2, 0], ## Eastern Europe 東欧標準時 [[RFC1947]] EET => [+1, 03, 00], ## Turkey EETDST=> [+1, 03, 00], ## Eastern European Dayright Saving EST => [-1, 5, 0], ## (NA)Eastern Standard 733, 822 EST => [+1, 10, 00], ## 豪州東部標準時 EST => [-1, 03, 00], ## Brazil Eastern Standard EST => [-1, 06, 00], ## Chile Easter Island Standard EWT => [-1, 4, 0], ## U.S. Eastern War Time FDT => [-1, 01, 00], ## Brazil De Noronha Daylight FST => [+1, 2, 0], ## French Summer FDT => [-1, 02, 00], ## Brazil De Noronha Standard FWT => [+1, 1, 0], ## French Winter ## FST と FWT が逆になっている資料がある。 ## 日本との時差は'''夏の方が短い'''のが正しい。 GDT => [+1, 1, 0], ## グリニッジ夏時間 724 GDT => [+1, 2, 0], ## German Daylight GM GMT => [+1, 0, 0], ## Greenwich Mean 733, 822 グリニッジ標準時 GST => [-1, 3, 0], ## Greenland Standard GST => [+1, 1, 0], ## German Standard GST => [+1, 10, 0], ## Guam Standard HAST => [-1, 10, 00], ## Hawaii and Alaska Standard HDT => [-1, 9, 0], ## Hawaii Daylight Time, Hawaii/Alaska Daylight Time [[RFC 733]] HDT => [-1, 10, 30], ## Hawaii Daylight HKT => [+1, 8, 0], ## Hong Kong 香港標準時 HST => [-1, 10, 0], ## Hawaii Standard 733 ハワイ・アラスカ標準時 IDLE => [+1, 12, 0], ## International Date Line, East IDLW => [-1, 12, 0], ## International Date Line, West IDT => [+1, 3, 0], ## イスラエル夏時間 [[RFC 1555]] IDT => [+1, 04, 30], ## Iran Daylight IST => [+1, 2, 0], ## Israel standard IST => [+1, 05, 30], ## Indian standard 印度標準時 IST => [+1, 03, 30], ## Iran Standard IT => [+1, 03, 30], ## Iran JCST => [+1, 09, 00], ## Japan Central Standard Time [[日本中央標準時]] JST => [+1, 09, 00], ## Japan Central Standard [[日本中央標準時]] JT => [+1, 09, 00], ## Japan Central Standard JT => [+1, 07, 30], ## Java (ジャワ島) KDT => [+1, 10, 00], ## Korean Daylight KST => [+1, 09, 00], ## Korean Standard LCL => [-1, 00, 00], ## (LSMTP が時間帯不明の時使用) LIGT => [+1, 10, 00], ## 豪州[[メルボルン]]時間 LOCAL => [-1, 00, 00], ## local time zone LON LT => [-1, 0, 0], ## Luna Time [RFC 1607] 月時間 [[RFC1607]] MDT => [-1, 6, 0], ## (NA)Mountain Daylight 北米山地夏時間 733, 822 MET => [+1, 0, 0], ## Middle European 中欧標準時 MET => [+1, 01, 00], ## Medium European MET DST=> [+1, 2, 0],## 中欧夏時間 METDST=> [+1, 2, 0],## 中欧夏時間 MEST => [+1, 2, 0], ## Middle European Summer MEWT => [+1, 0, 0], ## Middle European Winter MEZ => [+1, 0, 0], ## Central European (German) MST => [-1, 7, 0], ## (NA)Mountain Standard 北米山地標準時 733, 822 MOUNTAIN => [-1, 7, 0], ## (maybe) (NA)Mountain Standard 733, 822 MT => [+1, 08, 30], ## Moluccas (モルッカ諸島) MT => [-1, 0, 0], ## Mars Time [RFC 1607] 火星時間 [[RFC1607]] NDT => [-1, 2, 30], ## Newfoundland Daylight NFT => [-1, 3, 30], ## Newfoundland Standard NOR => [+1, 01, 00], ## Norway Standard NST => [-1, 3, 30], ## Newfoundland Standard 733 ニューファンドランド標準時 NST => [-1, 6, 30], ## North Sumatra NST => [-1, 11, 00], ## Nome Standard NT => [-1, 11, 0], ## Nome NZD => [+1, 13, 0], ## New Zealand Daylight NZT => [+1, 12, 0], ## New Zealand NZDT => [+1, 13, 0], ## New Zealand Daylight NZS => [+1, 12, 0], ## (maybe) New Zealand Standard NZST => [+1, 12, 0], ## New Zealand Standard PDT => [-1, 7, 0], ## (NA)Pacific Daylight 733, 822 北米太平洋夏時間 PM => [-1, 00, 00], ## ([[午前]]のこと?) PPET => [-1, 07, 00], ## US Pacific New (Presidental Election Year) PST => [-1, 8, 0], ## (NA)Pacific Standard 733, 822 北米太平洋標準時 SADT => [+1, 10, 30], ## South Australian Daylight SAMST SAST => [+1, 09, 30], ## South Australian Standard SAT => [+1, 09, 30], ## South Australian SET => [+1, 1, 0], ## Seychelles ([[セイシェル諸島]]) SST => [+1, 2, 0], ## Swedish Summer SST => [+1, 7, 0], ## South Sumatra SST => [+1, 08, 00], ## Singapore Standard SST => [-1, 11, 00], ## US Samoa Standard SWT => [+1, 1, 0], ## Swedish Winter UCT => [+1, 00, 00], ## Coordinated Universal Time UKR => [+1, 2, 0], ## Ukraine UNDEFINED => [-1, 0, 0], ## undefined UT => [+1, 0, 0], ## Universal Time 822 協定世界時 UTC => [+1, 0, 0], ## Coordinated Universal Time 協定世界時 WADT => [+1, 08, 00], ## West Australian Daylight WAST => [+1, 07, 00], ## West Australian Standard WAT => [-1, 0, 0], ## West Africa WDT => [+1, 09, 00], ## West Australian Daylight WDT => [-1, 03, 00], ## Brazil Western Daylight WET => [+1, 0, 0], ## Western European WETDST=> [+1, 01, 00], ## Western European Daylight WST => [+1, 8, 0], ## West Australian Standard WST => [-1, 04, 00], ## Brazil Western Standard YDT => [-1, 8, 0], ## Yukon Daylight 733 ユーコン夏時間 YST => [-1, 9, 0], ## Yukon Standard 733 ユーコン標準時 Z => [+1, 0, 0], ## 822, ISO 8601 ZP4 => [+1, 4, 0], ## Z+4 ZP5 => [+1, 5, 0], ## Z+5 ZP6 => [+1, 6, 0], ## Z+6 [2] [[RFC 822の日付形式]]にあるものは、[[RFC 2822の日付形式]]にもある。 [9] 上表には米軍規格のラテン文字1文字で表す方法は、 [CODE(822)[Z]] を除いて載せていない。 [[RFC 822の日付形式]]を参照。 [10] 上表では[[電子メイル]]関連の [[RFC]] などに載っていればその番号を参考として加えた。番号がないものは、 RFC には無いものの実際には使われていたもの ([CODE[JST]] など。) と、 [[C]] のような電子メイル以外の形式, その他日付系の応用で使われていたものを含む。 [4] 上記で違う[[時間帯]]に同じ略称が当てられているものが複数あることからわかるように、 略称は十分標準化されず、曖昧でない表記は不可能です。ですがら、 現在の[[日付形式]]規格, 例えば [[RFC 2822の日付形式]]や [[RFC 3339の日付形式]]では名前による指定を廃止し、数値による [SAMP(822)[+0900]] のような指定を使っています。 [5] [WEAK[2002-12-29 16:37]]: 未だに [[RFC 822]] message で [CODE(822)[JST]] とか吐く DQN [[UA]] があるみたいですな [6] [WEAK[2003-01-16 20:43]]: [[RFC 724]] の [CODE(822)[GDT]] とは何か、 実は説明がなくて、上の表では適当な数値が入ってますが、違うかもしれませんし、 これでいいのかもしれません。 [[ietf-822]] の最近の からのスレッドでこれが話題になってますが、 [[Dave Crocker]] が知らねぇ〜って言ってます。 (あんた著者じゃないかよ。) [7] >>6 のメッセージから引用。 >As I recall, the formulation of timezones for RFC 733 did not take much note of the previous documents. We simply decided which timezones we wanted to refer to by "name". Offsets (civilian or military) would be used for the rest. So we decided on all North American timezones for names, along with Greewhich Mean Time. (I'd guess that GDT means Greenwhich Daylight Time, but suspect there really is no such thing.) >"North America" included the far east of Canada as well as Alaska and Hawaii. Alaska swings *very* far west. None of us knew the names of their zones. It turns out the next zone east of EST is Atlantic Standard Time. I think I found that in a dictionary, and maybe also the Newfoundland zone. >The western extremes were more challenging. I could not find any reference to their names. I was working at The Rand Corporation at the time. It was famous for "inventing" the technical research library and it had a reference librarian who was legendary for finding difficult answers. >So I gave her a call and asked for her help. She called back in 10 minutes with the answer. I could not believe how quickly she solved this, so I asked how she came up with the answers. >She said she called the telephone information operators in the relevant areas and asked them what they called their timezones... [8] ''日付/時間のサポート''