Daylight Saving Time 2021
Was the time set backwards or forwards? When? Where? This page lists all daylight saving time changes and other time zone changes around the world for 2021.
- Transition timestamps were extracted from the latest version of the IANA time zone database (version 2022f, パッチなし).
日曜日 1月 17 2021
Fiji
Winter time started
The time was set back 1時間 from 03:00 to 02:00 local time.
- Before: Fiji Summer Time (FJST / UTC +13)
- After: Fiji Time (FJT / UTC +12)
- Transition time: 2021-01-16 14:00 UTC
- Time zone news: Fiji puts DST on hold
日曜日 3月 14 2021
サンピエール島・ミクロン島
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
- Before: Saint Pierre and Miquelon Standard Time (PMST / UTC -3)
- After: Saint Pierre and Miquelon Daylight Time (PMDT / UTC -2)
- Transition time: 2021-03-14 05:00 UTC
キューバ
Summer time started
The time was set forward 1時間 from 00:00 to 01:00 local time.
- Before: Cuba Standard Time (CST / UTC -5)
- After: Cuba Daylight Time (CDT / UTC -4)
- Transition time: 2021-03-14 05:00 UTC
- Applies to all of キューバ, including サンタ・クララ, サンティアーゴ・デ・クーバ と ハバナ.
バミューダ
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
- Before: Atlantic Standard Time (AST / UTC -4)
- After: Atlantic Daylight Time (ADT / UTC -3)
- Transition time: 2021-03-14 06:00 UTC
- Applies to all of バミューダ.
Qaanaaq, グリーンランド
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
- Before: Atlantic Standard Time (AST / UTC -4)
- After: Atlantic Daylight Time (ADT / UTC -3)
- Transition time: 2021-03-14 06:00 UTC
- Applies to all of Qaanaaq.
アメリカ
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
アメリカ has 11 time zones. Most of the country observes DST in the summer. Summer time starts at the same local time in all of アメリカ, but not simultaneously, due to different time zones.
Eastern Time
- Before: Eastern Standard Time (EST / UTC -5)
- After: Eastern Daylight Time (EDT / UTC -4)
- Transition time: 2021-03-14 07:00 UTC
- Applies to regions that alternate between EST and EDT, including Philadelphia, Washington, D.C., ニューヨーク と マイアミ.
Central Time
Mountain Time
Pacific Time
Alaska Time
Alaska: Islands west of -169.5°
- Before: Hawaii-Aleutian Standard Time (HAST / UTC -10)
- After: Hawaii-Aleutian Daylight Time (HADT / UTC -9)
- Transition time: 2021-03-14 12:00 UTC
カナダ
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
カナダ has 6 time zones. Most of the country observes DST in the summer. Summer time starts at the same local time in all of カナダ, but not simultaneously, due to different time zones.
Newfoundland Time
- Before: Newfoundland Standard Time (NST / UTC -3:30)
- After: Newfoundland Daylight Time (NDT / UTC -2:30)
- Transition time: 2021-03-14 05:30 UTC
Atlantic Time
- Before: Atlantic Standard Time (AST / UTC -4)
- After: Atlantic Daylight Time (ADT / UTC -3)
- Transition time: 2021-03-14 06:00 UTC
- Applies to regions that alternate between AST and ADT, including ニューブランズウィック州, ノバスコシア州 と プリンスエドワードアイランド州.
Eastern Time
Central Time
- Before: Central Standard Time (CST / UTC -6)
- After: Central Daylight Time (CDT / UTC -5)
- Transition time: 2021-03-14 08:00 UTC
- Applies to regions that alternate between CST and CDT, including マニトバ州.
Mountain Time
バハマ
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
ハイチ
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
タークス・カイコス諸島
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
- Before: Eastern Standard Time (EST / UTC -5)
- After: Eastern Daylight Time (EDT / UTC -4)
- Transition time: 2021-03-14 07:00 UTC
- Applies to all of タークス・カイコス諸島, including コックバーンタウン.
Mexico (the state of Baja California and areas near the United States border)
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
メキシコ has 4 time zones. All of Mexico except the states of Quintana Roo and Sonora observe DST in the summer. The state of Baja California and areas near the United States border follow the same DST schedule as the United States, while other DST-observing areas observe DST from 02:00 on the first Sunday of April until 02:00 on the last Sunday of October.
Zona Noroeste
US border regions in Zona Centro
- Before: Central Standard Time (CST / UTC -6)
- After: Central Daylight Time (CDT / UTC -5)
- Transition time: 2021-03-14 08:00 UTC
- Applies to US border regions that alternate between CST and CDT, including Heroica Matamoros, ヌエボ・ラレド と レイノサ.
US border regions in Zona Pacífico
- Before: Mountain Standard Time (MST / UTC -7)
- After: Mountain Daylight Time (MDT / UTC -6)
- Transition time: 2021-03-14 09:00 UTC
- Applies to US border regions that alternate between MST and MDT, including シウダー・フアレス.
月曜日 3月 22 2021
金曜日 3月 26 2021
土曜日 3月 27 2021
パレスチナ
Summer time started
The time was set forward 1時間 from 00:00 to 01:00 local time.
Western Greenland
Summer time started
The time was set forward 1時間 from 22:00 to 23:00 local time.
- Before: Western Greenland Time (WGT / UTC -3)
- After: Western Greenland Summer Time (WGST / UTC -2)
- Transition time: 2021-03-28 01:00 UTC
- Applies to regions that alternate between WGT and WGST, including ヌーク.
日曜日 3月 28 2021
レバノン
Summer time started
The time was set forward 1時間 from 00:00 to 01:00 local time.
モルドバ
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
Most of Eastern Europe
Summer time started
The time was set forward 1時間 from 03:00 to 04:00 local time.
- Before: Eastern European Time (EET / UTC +2)
- After: Eastern European Summer Time (EEST / UTC +3)
- Transition time: 2021-03-28 01:00 UTC
- Applies to ウクライナ, エストニア, オーランド諸島, キプロス, ギリシャ, フィンランド, ブルガリア, ラトビア, リトアニア と ルーマニア.
- Summer time starts at the same time in all of Europe (except Moldova), but at different local times, depending on the time zone.
Most of Europe
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
- Before: Central European Time (CET / UTC +1)
- After: Central European Summer Time (CEST / UTC +2)
- Transition time: 2021-03-28 01:00 UTC
- Applies to アルバニア, アンドラ, イタリア, オランダ, オーストリア, クロアチア, コソボ, サンマリノ, ジブラルタル, スイス, スウェーデン, スペイン, スロバキア, スロベニア, セルビア, チェコ, デンマーク, ドイツ, ノルウェー, ハンガリー, フランス, ベルギー, ボスニア・ヘルツェゴビナ, ポーランド, マルタ, モナコ, モンテネグロ, リヒテンシュタイン, ルクセンブルク, ローマ教皇庁 (バチカン市国) と 北マケドニア.
- Summer time starts at the same time in all of Europe (except Moldova), but at different local times, depending on the time zone.
パラグアイ
Winter time started
The time was set back 1時間 from 00:00 to 23:00 local time.
英国
Summer time started
The time was set forward 1時間 from 01:00 to 02:00 local time.
- Before: Greenwich Mean Time (GMT / UTC +0)
- After: British Summer Time (BST / UTC +1)
- Transition time: 2021-03-28 01:00 UTC
- Applies to all of 英国 and its Crown dependencies, including エディンバラ, カーディフ, ガーンジー, グラスゴー, シェフィールド, ジャージー, バーミンガム, ブリストル, ベルファスト, マン島, リヴァプール, リーズ と ロンドン.
- Does not apply to overseas territories.
アイルランド
Summer time started
The time was set forward 1時間 from 01:00 to 02:00 local time.
- Before: Greenwich Mean Time (GMT / UTC +0)
- After: Irish Standard Time (IST / UTC +1)
- Transition time: 2021-03-28 01:00 UTC
- Applies to all of アイルランド, including コーク, ダブリン, ダン・レアリー と リムリック.
- Contrary to other locations that observe daylight saving time, Ireland has daylight saving time in the winter, and standard time in the summer. Winter time is still one hour behind summer time.
カナリアス, フェロー諸島 と ポルトガル
Summer time started
The time was set forward 1時間 from 01:00 to 02:00 local time.
- Before: Western European Time (WET / UTC +0)
- After: Western European Summer Time (WEST / UTC +1)
- Transition time: 2021-03-28 01:00 UTC
- Applies to all of カナリアス, フェロー諸島 と ポルトガル, including Madeira, Porto, サンタ・クルス・デ・テネリフェ, トースハウン, ラスパルマス と リスボン.
- カナリアス changes time simultaneously with the rest of スペイン, but the local time of カナリアス is 1時間 behind スペイン.
Azores, ポルトガル
Summer time started
The time was set forward 1時間 from 00:00 to 01:00 local time.
- Before: Azores Time (AZOT / UTC -1)
- After: Azores Summer Time (AZOST / UTC +0)
- Transition time: 2021-03-28 01:00 UTC
- Applies to all of Azores, including Horta, アングラ・ド・エロイズモ と ポンタ・デルガダ.
- Azores changes time simultaneously with the rest of ポルトガル, but the local time of Azores is 1時間 behind ポルトガル.
Eastern Greenland
Summer time started
The time was set forward 1時間 from 00:00 to 01:00 local time.
- Before: Eastern Greenland Time (EGT / UTC -1)
- After: Eastern Greenland Summer Time (EGST / UTC +0)
- Transition time: 2021-03-28 01:00 UTC
- Applies to regions that alternate between EGT and EGST, including イトコルトルミット.
Troll research station, 南極
Summer time started
The time was set forward two hours from 01:00 to 03:00 local time.
- Before: Coordinated Universal Time (UTC / UTC +0)
- After: Central European Summer Time (CEST / UTC +2)
- Transition time: 2021-03-28 01:00 UTC
土曜日 4月 3 2021
イースター島, Región de Valparaíso, チリ
Winter time started
The time was set back 1時間 from 22:00 to 21:00 local time.
- Before: Easter Island Daylight Time (EADT / UTC -5)
- After: Easter Island Standard Time (EAST / UTC -6)
- Transition time: 2021-04-04 03:00 UTC
- イースター島 changes time simultaneously with the rest of チリ, but the local time of イースター島 is two hours behind チリ.
日曜日 4月 4 2021
Chatham Islands, ニュージーランド
Winter time started
The time was set back 1時間 from 03:45 to 02:45 local time.
- Before: Chatham Daylight Time (CHADT / UTC +13:45)
- After: Chatham Standard Time (CHAST / UTC +12:45)
- Transition time: 2021-04-03 14:00 UTC
ニュージーランド
Winter time started
The time was set back 1時間 from 03:00 to 02:00 local time.
ノーフォーク島
Winter time started
The time was set back 1時間 from 03:00 to 02:00 local time.
- Before: Norfolk Daylight Time (NFDT / UTC +12)
- After: Norfolk Time (NFT / UTC +11)
- Transition time: 2021-04-03 15:00 UTC
- Applies to all of ノーフォーク島.
- Time zone news: Norfolk Island will have daylight saving time
Lord Howe Island, New South Wales, オーストラリア
Winter time started
The time was set back half an hour from 02:00 to 01:30 local time.
- Before: Lord Howe Daylight Time (LHDT / UTC +11)
- After: Lord Howe Standard Time (LHST / UTC +10:30)
- Transition time: 2021-04-03 15:00 UTC
オーストラリア
Winter time started
The time was set back 1時間 from 03:00 to 02:00 local time.
オーストラリア has 9 time zones. Most of the country observes DST in the summer. Winter time starts at the same local time in all of オーストラリア, but not simultaneously, due to different time zones.
Australian Eastern Time
Australian Central Time
- Before: Australian Central Daylight Time (ACDT / UTC +10:30)
- After: Australian Central Standard Time (ACST / UTC +9:30)
- Transition time: 2021-04-03 16:30 UTC
- Applies to regions that alternate between ACST and ACDT, including アデレード.
チリ
Winter time started
The time was set back 1時間 from 00:00 to 23:00 local time.
- Before: Chile Daylight Time (CLDT / UTC -3)
- After: Chile Standard Time (CLT / UTC -4)
- Transition time: 2021-04-04 03:00 UTC
- Applies to all of チリ, including Puente Alto, アントファガスタ, サンティアゴ, バルパライソ と ビニャ・デル・マール.
- イースター島 changes time simultaneously with the rest of チリ, but the local time of イースター島 is two hours behind チリ.
Mexico (except Quintana Roo, Sonora, Baja California and areas near the United States border)
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
メキシコ has 4 time zones. All of Mexico except the states of Quintana Roo and Sonora observe DST in the summer. The state of Baja California and areas near the United States border follow the same DST schedule as the United States, while other DST-observing areas observe DST from 02:00 on the first Sunday of April until 02:00 on the last Sunday of October.
Zona Centro
- Before: Central Standard Time (CST / UTC -6)
- After: Central Daylight Time (CDT / UTC -5)
- Transition time: 2021-04-04 08:00 UTC
- Applies to regions that alternate between CST and CDT, including Ecatepec de Morelos, Iztapalapa, グアダラハラ, プエブラ と メキシコシティ.
日曜日 4月 11 2021
モロッコ と 西サハラ
Winter time started
The time was set back 1時間 from 03:00 to 02:00 local time.
- Before: West Africa Time (GMT+1 / UTC +1)
- After: Greenwich Mean Time (GMT / UTC +0)
- Transition time: 2021-04-11 02:00 UTC
- Applies to all of モロッコ と 西サハラ, including カサブランカ, マラケシュ と ラバト.
- Morocco and Western Sahara observe permanent daylight saving time, except during Ramadan, when daylight saving time is suspended.
日曜日 5月 16 2021
モロッコ と 西サハラ
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
- Before: Greenwich Mean Time (GMT / UTC +0)
- After: West Africa Time (GMT+1 / UTC +1)
- Transition time: 2021-05-16 02:00 UTC
- Applies to all of モロッコ と 西サハラ, including カサブランカ, マラケシュ と ラバト.
- Morocco and Western Sahara observe permanent daylight saving time, except during Ramadan, when daylight saving time is suspended.
土曜日 9月 4 2021
イースター島, Región de Valparaíso, チリ
Summer time started
The time was set forward 1時間 from 22:00 to 23:00 local time.
- Before: Easter Island Standard Time (EAST / UTC -6)
- After: Easter Island Daylight Time (EADT / UTC -5)
- Transition time: 2021-09-05 04:00 UTC
- イースター島 changes time simultaneously with the rest of チリ, but the local time of イースター島 is two hours behind チリ.
日曜日 9月 5 2021
チリ
Summer time started
The time was set forward 1時間 from 00:00 to 01:00 local time.
- Before: Chile Standard Time (CLT / UTC -4)
- After: Chile Daylight Time (CLDT / UTC -3)
- Transition time: 2021-09-05 04:00 UTC
- Applies to all of チリ, including Puente Alto, アントファガスタ, サンティアゴ, バルパライソ と ビニャ・デル・マール.
- イースター島 changes time simultaneously with the rest of チリ, but the local time of イースター島 is two hours behind チリ.
水曜日 9月 22 2021
日曜日 9月 26 2021
Chatham Islands, ニュージーランド
Summer time started
The time was set forward 1時間 from 02:45 to 03:45 local time.
- Before: Chatham Standard Time (CHAST / UTC +12:45)
- After: Chatham Daylight Time (CHADT / UTC +13:45)
- Transition time: 2021-09-25 14:00 UTC
ニュージーランド
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
日曜日 10月 3 2021
ノーフォーク島
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
- Before: Norfolk Time (NFT / UTC +11)
- After: Norfolk Daylight Time (NFDT / UTC +12)
- Transition time: 2021-10-02 15:00 UTC
- Applies to all of ノーフォーク島.
- Time zone news: Norfolk Island will have daylight saving time
Lord Howe Island, New South Wales, オーストラリア
Summer time started
The time was set forward half an hour from 02:00 to 02:30 local time.
- Before: Lord Howe Standard Time (LHST / UTC +10:30)
- After: Lord Howe Daylight Time (LHDT / UTC +11)
- Transition time: 2021-10-02 15:30 UTC
オーストラリア
Summer time started
The time was set forward 1時間 from 02:00 to 03:00 local time.
オーストラリア has 9 time zones. Most of the country observes DST in the summer. Summer time starts at the same local time in all of オーストラリア, but not simultaneously, due to different time zones.
Australian Eastern Time
Australian Central Time
- Before: Australian Central Standard Time (ACST / UTC +9:30)
- After: Australian Central Daylight Time (ACDT / UTC +10:30)
- Transition time: 2021-10-02 16:30 UTC
- Applies to regions that alternate between ACST and ACDT, including アデレード.
パラグアイ
Summer time started
The time was set forward 1時間 from 00:00 to 01:00 local time.
金曜日 10月 29 2021
土曜日 10月 30 2021
Western Greenland
Winter time started
The time was set back 1時間 from 23:00 to 22:00 local time.
- Before: Western Greenland Summer Time (WGST / UTC -2)
- After: Western Greenland Time (WGT / UTC -3)
- Transition time: 2021-10-31 01:00 UTC
- Applies to regions that alternate between WGT and WGST, including ヌーク.
日曜日 10月 31 2021
レバノン
Winter time started
The time was set back 1時間 from 00:00 to 23:00 local time.
イスラエル
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
モルドバ
Winter time started
The time was set back 1時間 from 03:00 to 02:00 local time.
Most of Eastern Europe
Winter time started
The time was set back 1時間 from 04:00 to 03:00 local time.
- Before: Eastern European Summer Time (EEST / UTC +3)
- After: Eastern European Time (EET / UTC +2)
- Transition time: 2021-10-31 01:00 UTC
- Applies to ウクライナ, エストニア, オーランド諸島, キプロス, ギリシャ, フィンランド, ブルガリア, ラトビア, リトアニア と ルーマニア.
- Winter time starts at the same time in all of Europe (except Moldova), but at different local times, depending on the time zone.
Most of Europe
Winter time started
The time was set back 1時間 from 03:00 to 02:00 local time.
- Before: Central European Summer Time (CEST / UTC +2)
- After: Central European Time (CET / UTC +1)
- Transition time: 2021-10-31 01:00 UTC
- Applies to アルバニア, アンドラ, イタリア, オランダ, オーストリア, クロアチア, コソボ, サンマリノ, ジブラルタル, スイス, スウェーデン, スペイン, スロバキア, スロベニア, セルビア, チェコ, デンマーク, ドイツ, ノルウェー, ハンガリー, フランス, ベルギー, ボスニア・ヘルツェゴビナ, ポーランド, マルタ, モナコ, モンテネグロ, リヒテンシュタイン, ルクセンブルク, ローマ教皇庁 (バチカン市国) と 北マケドニア.
- Winter time starts at the same time in all of Europe (except Moldova), but at different local times, depending on the time zone.
英国
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
- Before: British Summer Time (BST / UTC +1)
- After: Greenwich Mean Time (GMT / UTC +0)
- Transition time: 2021-10-31 01:00 UTC
- Applies to all of 英国 and its Crown dependencies, including エディンバラ, カーディフ, ガーンジー, グラスゴー, シェフィールド, ジャージー, バーミンガム, ブリストル, ベルファスト, マン島, リヴァプール, リーズ と ロンドン.
- Does not apply to overseas territories.
アイルランド
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
- Before: Irish Standard Time (IST / UTC +1)
- After: Greenwich Mean Time (GMT / UTC +0)
- Transition time: 2021-10-31 01:00 UTC
- Applies to all of アイルランド, including コーク, ダブリン, ダン・レアリー と リムリック.
- Contrary to other locations that observe daylight saving time, Ireland has daylight saving time in the winter, and standard time in the summer. Winter time is still one hour behind summer time.
カナリアス, フェロー諸島 と ポルトガル
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
- Before: Western European Summer Time (WEST / UTC +1)
- After: Western European Time (WET / UTC +0)
- Transition time: 2021-10-31 01:00 UTC
- Applies to all of カナリアス, フェロー諸島 と ポルトガル, including Madeira, Porto, サンタ・クルス・デ・テネリフェ, トースハウン, ラスパルマス と リスボン.
- カナリアス changes time simultaneously with the rest of スペイン, but the local time of カナリアス is 1時間 behind スペイン.
Azores, ポルトガル
Winter time started
The time was set back 1時間 from 01:00 to 00:00 local time.
- Before: Azores Summer Time (AZOST / UTC +0)
- After: Azores Time (AZOT / UTC -1)
- Transition time: 2021-10-31 01:00 UTC
- Applies to all of Azores, including Horta, アングラ・ド・エロイズモ と ポンタ・デルガダ.
- Azores changes time simultaneously with the rest of ポルトガル, but the local time of Azores is 1時間 behind ポルトガル.
Eastern Greenland
Winter time started
The time was set back 1時間 from 01:00 to 00:00 local time.
- Before: Eastern Greenland Summer Time (EGST / UTC +0)
- After: Eastern Greenland Time (EGT / UTC -1)
- Transition time: 2021-10-31 01:00 UTC
- Applies to regions that alternate between EGT and EGST, including イトコルトルミット.
Troll research station, 南極
Winter time started
The time was set back two hours from 03:00 to 01:00 local time.
- Before: Central European Summer Time (CEST / UTC +2)
- After: Coordinated Universal Time (UTC / UTC +0)
- Transition time: 2021-10-31 01:00 UTC
Mexico (except Quintana Roo, Sonora, Baja California and areas near the United States border)
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
メキシコ has 4 time zones. All of Mexico except the states of Quintana Roo and Sonora observe DST in the summer. The state of Baja California and areas near the United States border follow the same DST schedule as the United States, while other DST-observing areas observe DST from 02:00 on the first Sunday of April until 02:00 on the last Sunday of October.
Zona Centro
- Before: Central Daylight Time (CDT / UTC -5)
- After: Central Standard Time (CST / UTC -6)
- Transition time: 2021-10-31 07:00 UTC
- Applies to regions that alternate between CST and CDT, including Ecatepec de Morelos, Iztapalapa, グアダラハラ, プエブラ と メキシコシティ.
日曜日 11月 7 2021
サンピエール島・ミクロン島
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
- Before: Saint Pierre and Miquelon Daylight Time (PMDT / UTC -2)
- After: Saint Pierre and Miquelon Standard Time (PMST / UTC -3)
- Transition time: 2021-11-07 04:00 UTC
キューバ
Winter time started
The time was set back 1時間 from 01:00 to 00:00 local time.
- Before: Cuba Daylight Time (CDT / UTC -4)
- After: Cuba Standard Time (CST / UTC -5)
- Transition time: 2021-11-07 05:00 UTC
- Applies to all of キューバ, including サンタ・クララ, サンティアーゴ・デ・クーバ と ハバナ.
バミューダ
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
- Before: Atlantic Daylight Time (ADT / UTC -3)
- After: Atlantic Standard Time (AST / UTC -4)
- Transition time: 2021-11-07 05:00 UTC
- Applies to all of バミューダ.
Qaanaaq, グリーンランド
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
- Before: Atlantic Daylight Time (ADT / UTC -3)
- After: Atlantic Standard Time (AST / UTC -4)
- Transition time: 2021-11-07 05:00 UTC
- Applies to all of Qaanaaq.
アメリカ
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
アメリカ has 11 time zones. Most of the country observes DST in the summer. Winter time starts at the same local time in all of アメリカ, but not simultaneously, due to different time zones.
Eastern Time
- Before: Eastern Daylight Time (EDT / UTC -4)
- After: Eastern Standard Time (EST / UTC -5)
- Transition time: 2021-11-07 06:00 UTC
- Applies to regions that alternate between EST and EDT, including Philadelphia, Washington, D.C., ニューヨーク と マイアミ.
Central Time
Mountain Time
Pacific Time
Alaska Time
Alaska: Islands west of -169.5°
- Before: Hawaii-Aleutian Daylight Time (HADT / UTC -9)
- After: Hawaii-Aleutian Standard Time (HAST / UTC -10)
- Transition time: 2021-11-07 11:00 UTC
カナダ
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
カナダ has 6 time zones. Most of the country observes DST in the summer. Winter time starts at the same local time in all of カナダ, but not simultaneously, due to different time zones.
Newfoundland Time
- Before: Newfoundland Daylight Time (NDT / UTC -2:30)
- After: Newfoundland Standard Time (NST / UTC -3:30)
- Transition time: 2021-11-07 04:30 UTC
Atlantic Time
- Before: Atlantic Daylight Time (ADT / UTC -3)
- After: Atlantic Standard Time (AST / UTC -4)
- Transition time: 2021-11-07 05:00 UTC
- Applies to regions that alternate between AST and ADT, including ニューブランズウィック州, ノバスコシア州 と プリンスエドワードアイランド州.
Eastern Time
Central Time
- Before: Central Daylight Time (CDT / UTC -5)
- After: Central Standard Time (CST / UTC -6)
- Transition time: 2021-11-07 07:00 UTC
- Applies to regions that alternate between CST and CDT, including マニトバ州.
Mountain Time
バハマ
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
ハイチ
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
タークス・カイコス諸島
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
- Before: Eastern Daylight Time (EDT / UTC -4)
- After: Eastern Standard Time (EST / UTC -5)
- Transition time: 2021-11-07 06:00 UTC
- Applies to all of タークス・カイコス諸島, including コックバーンタウン.
Mexico (the state of Baja California and areas near the United States border)
Winter time started
The time was set back 1時間 from 02:00 to 01:00 local time.
メキシコ has 4 time zones. All of Mexico except the states of Quintana Roo and Sonora observe DST in the summer. The state of Baja California and areas near the United States border follow the same DST schedule as the United States, while other DST-observing areas observe DST from 02:00 on the first Sunday of April until 02:00 on the last Sunday of October.
Zona Noroeste
US border regions in Zona Centro
- Before: Central Daylight Time (CDT / UTC -5)
- After: Central Standard Time (CST / UTC -6)
- Transition time: 2021-11-07 07:00 UTC
- Applies to US border regions that alternate between CST and CDT, including Heroica Matamoros, ヌエボ・ラレド と レイノサ.
US border regions in Zona Pacífico
- Before: Mountain Daylight Time (MDT / UTC -6)
- After: Mountain Standard Time (MST / UTC -7)
- Transition time: 2021-11-07 08:00 UTC
- Applies to US border regions that alternate between MST and MDT, including シウダー・フアレス.