Daylight Saving Time 2021
Will the time be 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 2021a, with no patches).
- Transitions may be added, canceled or changed, sometimes on short notice.
- This page was last updated on tirsdag, 26. januarY.
The next event happens on 14. martsY, when DST starts in Saint Pierre og Miquelon.
søndag
17
januar
Fiji
Winter time started
The time was set back én time 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
- Applies to all of Fiji.
- Time zone news: New start date for DST in Fiji
mandag
1
februar
South Sudan
Winter time started
The time was set back én time from 00:00 to 23:00 local time.
- Before: Central Africa Time (CAT / UTC +3)
- After: Eastern Africa Time (EAT / UTC +2)
- Transition time: 2021-01-31 21:00 UTC
- Applies to all of South Sudan, including Juba og Malakal.
- Time zone news: South Sudan changes time zone
søndag
14
marts
Saint Pierre og Miquelon
Summer time starts
The time will be set forward én time 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
Cuba
Summer time starts
The time will be set forward én time 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 Cuba, including Havana, Santa Clara og Santiago de Cuba.
Bermuda
Summer time starts
The time will be set forward én time 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 Bermuda.
Thule, Grønland
Summer time starts
The time will be set forward én time 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 Thule.
USA
Summer time starts
The time will be set forward én time from 02:00 to 03:00 local time.
USA has 11 time zones. Most of the country observes DST in the summer. Summer time starts at the same local time in all of USA, 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 Miami, New York, Philadelphia og Washington, D.C..
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 Austin, Chicago, Dallas, Houston og San Antonio.
Mountain Time
- Before: Mountain Standard Time (MST / UTC -7)
- After: Mountain Daylight Time (MDT / UTC -6)
- Transition time: 2021-03-14 09:00 UTC
- Applies to regions that alternate between MST and MDT, including Albuquerque, Denver og El Paso.
Pacific Time
- Before: Pacific Standard Time (PST / UTC -8)
- After: Pacific Daylight Time (PDT / UTC -7)
- Transition time: 2021-03-14 10:00 UTC
- Applies to regions that alternate between PST and PDT, including Las Vegas, Los Angeles, Portland, San Diego, San Francisco, San Jose og Seattle.
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
Canada
Summer time starts
The time will be set forward én time from 02:00 to 03:00 local time.
Canada has 6 time zones. Most of the country observes DST in the summer. Summer time starts at the same local time in all of Canada, 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 New Brunswick, Nova Scotia og Prince Edward Island.
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 Manitoba.
Mountain Time
Bahamas
Summer time starts
The time will be set forward én time from 02:00 to 03:00 local time.
Haiti
Summer time starts
The time will be set forward én time 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 Haiti, including Port-au-Prince.
Turks- og Caicosøerne
Summer time starts
The time will be set forward én time 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 Turks- og Caicosøerne, including Cockburn Town.
Mexico (the state of Baja California and areas near the United States border)
Summer time starts
The time will be set forward én time from 02:00 to 03:00 local time.
Mexico 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 Matamoros, Nuevo Laredo og Reynosa.
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 Ciudad Juárez.
mandag
22
marts
Iran
Summer time starts
The time will be set forward én time from 00:00 to 01:00 local time.
fredag
26
marts
Jordan
Summer time starts
The time will be set forward én time from 00:00 to 01:00 local time.
Syrien
Summer time starts
The time will be set forward én time from 00:00 to 01:00 local time.
Israel
Summer time starts
The time will be set forward én time from 02:00 to 03:00 local time.
lørdag
27
marts
De palæstinensiske områder
Summer time starts
The time will be set forward én time from 00:00 to 01:00 local time.
- Before: Arabia Standard Time (AST / UTC +2)
- After: Arabia Daylight Time (ADT / UTC +3)
- Transition time: 2021-03-26 22:00 UTC
- Applies to all of De palæstinensiske områder, including Gaza, Hebron og West Bank.
Western Greenland
Summer time starts
The time will be set forward én time 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 Nuuk.
søndag
28
marts
Libanon
Summer time starts
The time will be set forward én time from 00:00 to 01:00 local time.
Moldova
Summer time starts
The time will be set forward én time from 02:00 to 03:00 local time.
Most of Eastern Europe
Summer time starts
The time will be set forward én time 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 Bulgarien, Cypern, Estland, Finland, Grækenland, Letland, Litauen, Rumænien, Ukraine og Åland.
- 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 starts
The time will be set forward én time 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 Albanien, Andorra, Belgien, Danmark, Frankrig, Gibraltar, Holland, Italien, Kosovo, Kroatien, Liechtenstein, Luxembourg, Malta, Monaco, Montenegro, Norge, Polen, Schweiz, Serbia, Slovakiet, Slovenien, Spanien, Sverige, Tjekkiet, Tyskland, Ungarn og Østrig.
- Summer time starts at the same time in all of Europe (except Moldova), but at different local times, depending on the time zone.
Paraguay
Winter time starts
The time will be set back én time from 00:00 to 23:00 local time.
Storbritannien
Summer time starts
The time will be set forward én time 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 Storbritannien and its Crown dependencies, including Belfast, Birmingham, Bristol, Cardiff, Edinburgh, Glasgow, Guernsey, Isle of Man, Jersey, Leeds, Liverpool, London og Sheffield.
- Does not apply to overseas territories.
Irland
Summer time starts
The time will be set forward én time 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 Irland, including Cork, Dublin, Dun Laoghaire og Limerick.
- 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.
Færøerne, Kanariske Øer og Portugal
Summer time starts
The time will be set forward én time 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 Færøerne, Kanariske Øer og Portugal, including Las Palmas, Lissabon, Madeira, Porto, Santa Cruz de Tenerife, Tenerife og Tórshavn.
- Kanariske Øer changes time simultaneously with the rest of Spanien, but the local time of Kanariske Øer is én time behind Spanien.
Azores, Portugal
Summer time starts
The time will be set forward én time 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 Angra do Heroísmo, Horta og Ponta Delgada.
- Azores changes time simultaneously with the rest of Portugal, but the local time of Azores is én time behind Portugal.
Eastern Greenland
Summer time starts
The time will be set forward én time 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 Ittoqqortoormiit.
Troll research station, Antarktis
Summer time starts
The time will be 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
lørdag
3
april
Påskeøen, Valparaíso, Chile
Winter time starts
The time will be set back én time 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
- Påskeøen changes time simultaneously with the rest of Chile, but the local time of Påskeøen is two hours behind Chile.
søndag
4
april
Samoa
Winter time starts
The time will be set back én time from 04:00 to 03:00 local time.
- Before: West Samoa Daylight Time (WSDT / UTC +14)
- After: West Samoa Standard Time (WSST / UTC +13)
- Transition time: 2021-04-03 14:00 UTC
Chatham Islands, Ny Zeeland
Winter time starts
The time will be set back én time 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
Ny Zeeland
Winter time starts
The time will be set back én time from 03:00 to 02:00 local time.
- Before: New Zealand Daylight Time (NZDT / UTC +13)
- After: New Zealand Standard Time (NZST / UTC +12)
- Transition time: 2021-04-03 14:00 UTC
- Applies to all of Ny Zeeland, including Auckland, Christchurch og Wellington.
- Does not apply to dependent territories and outlying islands.
Norfolk Island
Winter time starts
The time will be set back én time 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 Norfolk Island.
- Time zone news: Norfolk Island will have daylight saving time
Lord Howe Island, New South Wales, Australien
Winter time starts
The time will be 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
Australien
Winter time starts
The time will be set back én time from 03:00 to 02:00 local time.
Australien has 9 time zones. Most of the country observes DST in the summer. Winter time starts at the same local time in all of Australien, but not simultaneously, due to different time zones.
Australian Eastern Time
- Before: Australian Eastern Daylight Time (AEDT / UTC +11)
- After: Australian Eastern Standard Time (AEST / UTC +10)
- Transition time: 2021-04-03 16:00 UTC
- Applies to regions that alternate between AEST and AEDT, including Canberra, Melbourne, Newcastle, Sydney og Wollongong.
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 Adelaide.
Chile
Winter time starts
The time will be set back én time 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 Chile, including Antofagasta, Puente Alto, Santiago de Chile, Valparaiso og Viña del Mar.
- Påskeøen changes time simultaneously with the rest of Chile, but the local time of Påskeøen is two hours behind Chile.
Mexico (except Quintana Roo, Sonora, Baja California and areas near the United States border)
Summer time starts
The time will be set forward én time from 02:00 to 03:00 local time.
Mexico 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, Guadalajara, Iztapalapa, Mexico City og Puebla.
søndag
11
april
Marokko og Vestsahara
Winter time starts
The time will be set back én time from 03:00 to 02:00 local time.
- Before: West Africa Time (WAT / UTC +1)
- After: Greenwich Mean Time (GMT / UTC +0)
- Transition time: 2021-04-11 02:00 UTC
- Applies to all of Marokko og Vestsahara, including Casablanca, Marrakesh og Rabat.
- Morocco and Western Sahara observe permanent daylight saving time, except during Ramadan, when daylight saving time is suspended.
søndag
16
maj
Marokko og Vestsahara
Summer time starts
The time will be set forward én time from 02:00 to 03:00 local time.
- Before: Greenwich Mean Time (GMT / UTC +0)
- After: West Africa Time (WAT / UTC +1)
- Transition time: 2021-05-16 02:00 UTC
- Applies to all of Marokko og Vestsahara, including Casablanca, Marrakesh og Rabat.
- Morocco and Western Sahara observe permanent daylight saving time, except during Ramadan, when daylight saving time is suspended.
lørdag
4
september
Påskeøen, Valparaíso, Chile
Summer time starts
The time will be set forward én time 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
- Påskeøen changes time simultaneously with the rest of Chile, but the local time of Påskeøen is two hours behind Chile.
søndag
5
september
Chile
Summer time starts
The time will be set forward én time 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 Chile, including Antofagasta, Puente Alto, Santiago de Chile, Valparaiso og Viña del Mar.
- Påskeøen changes time simultaneously with the rest of Chile, but the local time of Påskeøen is two hours behind Chile.
onsdag
22
september
Iran
Winter time starts
The time will be set back én time from 00:00 to 23:00 local time.
søndag
26
september
Samoa
Summer time starts
The time will be set forward én time from 03:00 to 04:00 local time.
- Before: West Samoa Standard Time (WSST / UTC +13)
- After: West Samoa Daylight Time (WSDT / UTC +14)
- Transition time: 2021-09-25 14:00 UTC
Chatham Islands, Ny Zeeland
Summer time starts
The time will be set forward én time 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
Ny Zeeland
Summer time starts
The time will be set forward én time from 02:00 to 03:00 local time.
- Before: New Zealand Standard Time (NZST / UTC +12)
- After: New Zealand Daylight Time (NZDT / UTC +13)
- Transition time: 2021-09-25 14:00 UTC
- Applies to all of Ny Zeeland, including Auckland, Christchurch og Wellington.
- Does not apply to dependent territories and outlying islands.
søndag
3
oktober
Norfolk Island
Summer time starts
The time will be set forward én time 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 Norfolk Island.
- Time zone news: Norfolk Island will have daylight saving time
Lord Howe Island, New South Wales, Australien
Summer time starts
The time will be 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
Australien
Summer time starts
The time will be set forward én time from 02:00 to 03:00 local time.
Australien has 9 time zones. Most of the country observes DST in the summer. Summer time starts at the same local time in all of Australien, but not simultaneously, due to different time zones.
Australian Eastern Time
- Before: Australian Eastern Standard Time (AEST / UTC +10)
- After: Australian Eastern Daylight Time (AEDT / UTC +11)
- Transition time: 2021-10-02 16:00 UTC
- Applies to regions that alternate between AEST and AEDT, including Canberra, Melbourne, Newcastle, Sydney og Wollongong.
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 Adelaide.
Paraguay
Summer time starts
The time will be set forward én time from 00:00 to 01:00 local time.
fredag
29
oktober
Syrien
Winter time starts
The time will be set back én time from 00:00 to 23:00 local time.
Jordan
Winter time starts
The time will be set back én time from 01:00 to 00:00 local time.
lørdag
30
oktober
De palæstinensiske områder
Winter time starts
The time will be set back én time from 01:00 to 00:00 local time.
- Before: Arabia Daylight Time (ADT / UTC +3)
- After: Arabia Standard Time (AST / UTC +2)
- Transition time: 2021-10-29 22:00 UTC
- Applies to all of De palæstinensiske områder, including Gaza, Hebron og West Bank.
Western Greenland
Winter time starts
The time will be set back én time 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 Nuuk.
søndag
31
oktober
Libanon
Winter time starts
The time will be set back én time from 00:00 to 23:00 local time.
Israel
Winter time starts
The time will be set back én time from 02:00 to 01:00 local time.
Moldova
Winter time starts
The time will be set back én time from 03:00 to 02:00 local time.
Most of Eastern Europe
Winter time starts
The time will be set back én time 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 Bulgarien, Cypern, Estland, Finland, Grækenland, Letland, Litauen, Rumænien, Ukraine og Åland.
- 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 starts
The time will be set back én time 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 Albanien, Andorra, Belgien, Danmark, Frankrig, Gibraltar, Holland, Italien, Kosovo, Kroatien, Liechtenstein, Luxembourg, Malta, Monaco, Montenegro, Norge, Polen, Schweiz, Serbia, Slovakiet, Slovenien, Spanien, Sverige, Tjekkiet, Tyskland, Ungarn og Østrig.
- Winter time starts at the same time in all of Europe (except Moldova), but at different local times, depending on the time zone.
Storbritannien
Winter time starts
The time will be set back én time 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 Storbritannien and its Crown dependencies, including Belfast, Birmingham, Bristol, Cardiff, Edinburgh, Glasgow, Guernsey, Isle of Man, Jersey, Leeds, Liverpool, London og Sheffield.
- Does not apply to overseas territories.
Irland
Winter time starts
The time will be set back én time 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 Irland, including Cork, Dublin, Dun Laoghaire og Limerick.
- 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.
Færøerne, Kanariske Øer og Portugal
Winter time starts
The time will be set back én time 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 Færøerne, Kanariske Øer og Portugal, including Las Palmas, Lissabon, Madeira, Porto, Santa Cruz de Tenerife, Tenerife og Tórshavn.
- Kanariske Øer changes time simultaneously with the rest of Spanien, but the local time of Kanariske Øer is én time behind Spanien.
Azores, Portugal
Winter time starts
The time will be set back én time 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 Angra do Heroísmo, Horta og Ponta Delgada.
- Azores changes time simultaneously with the rest of Portugal, but the local time of Azores is én time behind Portugal.
Eastern Greenland
Winter time starts
The time will be set back én time 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 Ittoqqortoormiit.
Troll research station, Antarktis
Winter time starts
The time will be 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 starts
The time will be set back én time from 02:00 to 01:00 local time.
Mexico 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, Guadalajara, Iztapalapa, Mexico City og Puebla.
søndag
7
november
Saint Pierre og Miquelon
Winter time starts
The time will be set back én time 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
Cuba
Winter time starts
The time will be set back én time 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 Cuba, including Havana, Santa Clara og Santiago de Cuba.
Bermuda
Winter time starts
The time will be set back én time 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 Bermuda.
Thule, Grønland
Winter time starts
The time will be set back én time 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 Thule.
USA
Winter time starts
The time will be set back én time from 02:00 to 01:00 local time.
USA has 11 time zones. Most of the country observes DST in the summer. Winter time starts at the same local time in all of USA, 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 Miami, New York, Philadelphia og Washington, D.C..
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 Austin, Chicago, Dallas, Houston og San Antonio.
Mountain Time
- Before: Mountain Daylight Time (MDT / UTC -6)
- After: Mountain Standard Time (MST / UTC -7)
- Transition time: 2021-11-07 08:00 UTC
- Applies to regions that alternate between MST and MDT, including Albuquerque, Denver og El Paso.
Pacific Time
- Before: Pacific Daylight Time (PDT / UTC -7)
- After: Pacific Standard Time (PST / UTC -8)
- Transition time: 2021-11-07 09:00 UTC
- Applies to regions that alternate between PST and PDT, including Las Vegas, Los Angeles, Portland, San Diego, San Francisco, San Jose og Seattle.
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
Canada
Winter time starts
The time will be set back én time from 02:00 to 01:00 local time.
Canada has 6 time zones. Most of the country observes DST in the summer. Winter time starts at the same local time in all of Canada, 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 New Brunswick, Nova Scotia og Prince Edward Island.
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 Manitoba.
Mountain Time
Bahamas
Winter time starts
The time will be set back én time from 02:00 to 01:00 local time.
Haiti
Winter time starts
The time will be set back én time 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 Haiti, including Port-au-Prince.
Turks- og Caicosøerne
Winter time starts
The time will be set back én time 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 Turks- og Caicosøerne, including Cockburn Town.
Mexico (the state of Baja California and areas near the United States border)
Winter time starts
The time will be set back én time from 02:00 to 01:00 local time.
Mexico 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 Matamoros, Nuevo Laredo og Reynosa.
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 Ciudad Juárez.
søndag
14
november
Fiji
Summer time starts
The time will be set forward én time from 02:00 to 03:00 local time.
- Before: Fiji Time (FJT / UTC +12)
- After: Fiji Summer Time (FJST / UTC +13)
- Transition time: 2021-11-13 14:00 UTC
- Applies to all of Fiji.
- Time zone news: New start date for DST in Fiji