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 Tuesday, January 26, 2021.
The next event happens on May 16, 2021, when DST starts in Morocco and Western Sahara.
Sunday
17
January
Fiji
Winter time started
The time was set back one hour 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
Monday
1
February
South Sudan
Winter time started
The time was set back one hour 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 and Malakal.
- Time zone news: South Sudan changes time zone
Sunday
14
March
Saint Pierre and Miquelon
Summer time started
The time was set forward one hour 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 started
The time was set forward one hour 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 and Santiago de Cuba.
Bermuda
Summer time started
The time was set forward one hour 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.
Qaanaaq Kommune, Greenland
Summer time started
The time was set forward one hour 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 Kommune.
United States
Summer time started
The time was set forward one hour from 02:00 to 03:00 local time.
United States has 11 time zones. Most of the country observes DST in the summer. Summer time starts at the same local time in all of United States, 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 and 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 and 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 and 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 and 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 started
The time was set forward one hour 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 , Nova Scotia and 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 started
The time was set forward one hour from 02:00 to 03:00 local time.
Haiti
Summer time started
The time was set forward one hour 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 and Caicos Islands
Summer time started
The time was set forward one hour 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 and Caicos Islands, including Cockburn Town.
Mexico (the state of Baja California and areas near the United States border)
Summer time started
The time was set forward one hour 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 Heroica Matamoros, Nuevo Laredo and 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.
Monday
22
March
Iran
Summer time started
The time was set forward one hour from 00:00 to 01:00 local time.
Friday
26
March
Jordan
Summer time started
The time was set forward one hour from 00:00 to 01:00 local time.
Syria
Summer time started
The time was set forward one hour from 00:00 to 01:00 local time.
Israel
Summer time started
The time was set forward one hour from 02:00 to 03:00 local time.
Saturday
27
March
Palestine
Summer time started
The time was set forward one hour from 00:00 to 01:00 local time.
Western Greenland
Summer time started
The time was set forward one hour 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.
Sunday
28
March
Lebanon
Summer time started
The time was set forward one hour from 00:00 to 01:00 local time.
Moldova
Summer time started
The time was set forward one hour from 02:00 to 03:00 local time.
Most of Eastern Europe
Summer time started
The time was set forward one hour 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 Bulgaria, Cyprus, Estonia, Finland, Greece, Latvia, Lithuania, Romania, Ukraine and 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 started
The time was set forward one hour 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 Albania, Andorra, Austria, Belgium, Croatia, Czechia, Denmark, France, Germany, Gibraltar, Hungary, Italy, Kosovo, Liechtenstein, Luxembourg, Malta, Monaco, Montenegro, Netherlands, Norway, Poland, Serbia, Slovakia, Slovenia, Spain, Sweden and Switzerland.
- 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 started
The time was set back one hour from 00:00 to 23:00 local time.
United Kingdom
Summer time started
The time was set forward one hour 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 United Kingdom and its Crown dependencies, including Belfast, Birmingham, Bristol, Cardiff, Edinburgh, Glasgow, Guernsey, Isle of Man, Jersey, Leeds, Liverpool, London and Sheffield.
- Does not apply to overseas territories.
Ireland
Summer time started
The time was set forward one hour 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 Ireland, including Cork, Dublin, Dún Laoghaire and 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.
Canary Islands, Faroe Islands and Portugal
Summer time started
The time was set forward one hour 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 Canary Islands, Faroe Islands and Portugal, including Las Palmas, Lisbon, Madeira, Porto, Santa Cruz de Tenerife, Tenerife and Tórshavn.
- Canary Islands changes time simultaneously with the rest of Spain, but the local time of Canary Islands is one hour behind Spain.
Azores, Portugal
Summer time started
The time was set forward one hour 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 and Horta.
- Azores changes time simultaneously with the rest of Portugal, but the local time of Azores is one hour behind Portugal.
Eastern Greenland
Summer time started
The time was set forward one hour 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, Antarctica
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
Saturday
3
April
Easter Island, V Región, Chile
Winter time started
The time was set back one hour 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
- Easter Island changes time simultaneously with the rest of Chile, but the local time of Easter Island is two hours behind Chile.
Sunday
4
April
Samoa
Winter time started
The time was set back one hour 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, New Zealand
Winter time started
The time was set back one hour 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
New Zealand
Winter time started
The time was set back one hour 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 New Zealand, including Auckland, Christchurch and Wellington.
- Does not apply to dependent territories and outlying islands.
Norfolk Island
Winter time started
The time was set back one hour 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
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
Australia
Winter time started
The time was set back one hour from 03:00 to 02:00 local time.
Australia has 9 time zones. Most of the country observes DST in the summer. Winter time starts at the same local time in all of Australia, 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 and 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 started
The time was set back one hour 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, Valparaíso and Viña del Mar.
- Easter Island changes time simultaneously with the rest of Chile, but the local time of Easter Island is two hours behind Chile.
Mexico (except Quintana Roo, Sonora, Baja California and areas near the United States border)
Summer time started
The time was set forward one hour 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, Guadalajara, Iztapalapa, Mexico City and Puebla City.
Zona Pacífico, except Sonora
- Before: Mountain Standard Time (MST / UTC -7)
- After: Mountain Daylight Time (MDT / UTC -6)
- Transition time: 2021-04-04 09:00 UTC
- Applies to regions that alternate between MST and MDT, including Chihuahua City, Culiacán and Mazatlán.
Sunday
11
April
Morocco and Western Sahara
Winter time started
The time was set back one hour 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 Morocco and Western Sahara, including Casablanca, Marrakesh and Rabat.
- Morocco and Western Sahara observe permanent daylight saving time, except during Ramadan, when daylight saving time is suspended.
Sunday
16
May
Morocco and Western Sahara
Summer time starts
The time will be set forward one hour 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 Morocco and Western Sahara, including Casablanca, Marrakesh and Rabat.
- Morocco and Western Sahara observe permanent daylight saving time, except during Ramadan, when daylight saving time is suspended.
Saturday
4
September
Easter Island, V Región, Chile
Summer time starts
The time will be set forward one hour 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
- Easter Island changes time simultaneously with the rest of Chile, but the local time of Easter Island is two hours behind Chile.
Sunday
5
September
Chile
Summer time starts
The time will be set forward one hour 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, Valparaíso and Viña del Mar.
- Easter Island changes time simultaneously with the rest of Chile, but the local time of Easter Island is two hours behind Chile.
Wednesday
22
September
Iran
Winter time starts
The time will be set back one hour from 00:00 to 23:00 local time.
Sunday
26
September
Samoa
Summer time starts
The time will be set forward one hour 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, New Zealand
Summer time starts
The time will be set forward one hour 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
New Zealand
Summer time starts
The time will be set forward one hour 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 New Zealand, including Auckland, Christchurch and Wellington.
- Does not apply to dependent territories and outlying islands.
Sunday
3
October
Norfolk Island
Summer time starts
The time will be set forward one hour 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
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
Australia
Summer time starts
The time will be set forward one hour from 02:00 to 03:00 local time.
Australia has 9 time zones. Most of the country observes DST in the summer. Summer time starts at the same local time in all of Australia, 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 and 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 one hour from 00:00 to 01:00 local time.
Friday
29
October
Syria
Winter time starts
The time will be set back one hour from 00:00 to 23:00 local time.
Jordan
Winter time starts
The time will be set back one hour from 01:00 to 00:00 local time.
Saturday
30
October
Palestine
Winter time starts
The time will be set back one hour from 01:00 to 00:00 local time.
Western Greenland
Winter time starts
The time will be set back one hour 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.
Sunday
31
October
Lebanon
Winter time starts
The time will be set back one hour from 00:00 to 23:00 local time.
Israel
Winter time starts
The time will be set back one hour from 02:00 to 01:00 local time.
Moldova
Winter time starts
The time will be set back one hour from 03:00 to 02:00 local time.
Most of Eastern Europe
Winter time starts
The time will be set back one hour 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 Bulgaria, Cyprus, Estonia, Finland, Greece, Latvia, Lithuania, Romania, Ukraine and 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 one hour 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 Albania, Andorra, Austria, Belgium, Croatia, Czechia, Denmark, France, Germany, Gibraltar, Hungary, Italy, Kosovo, Liechtenstein, Luxembourg, Malta, Monaco, Montenegro, Netherlands, Norway, Poland, Serbia, Slovakia, Slovenia, Spain, Sweden and Switzerland.
- Winter time starts at the same time in all of Europe (except Moldova), but at different local times, depending on the time zone.
United Kingdom
Winter time starts
The time will be set back one hour 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 United Kingdom and its Crown dependencies, including Belfast, Birmingham, Bristol, Cardiff, Edinburgh, Glasgow, Guernsey, Isle of Man, Jersey, Leeds, Liverpool, London and Sheffield.
- Does not apply to overseas territories.
Ireland
Winter time starts
The time will be set back one hour 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 Ireland, including Cork, Dublin, Dún Laoghaire and 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.
Canary Islands, Faroe Islands and Portugal
Winter time starts
The time will be set back one hour 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 Canary Islands, Faroe Islands and Portugal, including Las Palmas, Lisbon, Madeira, Porto, Santa Cruz de Tenerife, Tenerife and Tórshavn.
- Canary Islands changes time simultaneously with the rest of Spain, but the local time of Canary Islands is one hour behind Spain.
Azores, Portugal
Winter time starts
The time will be set back one hour 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 and Horta.
- Azores changes time simultaneously with the rest of Portugal, but the local time of Azores is one hour behind Portugal.
Eastern Greenland
Winter time starts
The time will be set back one hour 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, Antarctica
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 one hour 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, Guadalajara, Iztapalapa, Mexico City and Puebla City.
Zona Pacífico, except Sonora
- Before: Mountain Daylight Time (MDT / UTC -6)
- After: Mountain Standard Time (MST / UTC -7)
- Transition time: 2021-10-31 08:00 UTC
- Applies to regions that alternate between MST and MDT, including Chihuahua City, Culiacán and Mazatlán.
Sunday
7
November
Saint Pierre and Miquelon
Winter time starts
The time will be set back one hour 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 one hour 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 and Santiago de Cuba.
Bermuda
Winter time starts
The time will be set back one hour 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.
Qaanaaq Kommune, Greenland
Winter time starts
The time will be set back one hour 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 Kommune.
United States
Winter time starts
The time will be set back one hour from 02:00 to 01:00 local time.
United States has 11 time zones. Most of the country observes DST in the summer. Winter time starts at the same local time in all of United States, 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 and 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 and 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 and 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 and 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 one hour 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 , Nova Scotia and 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 one hour from 02:00 to 01:00 local time.
Haiti
Winter time starts
The time will be set back one hour 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 and Caicos Islands
Winter time starts
The time will be set back one hour 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 and Caicos Islands, 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 one hour 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 Heroica Matamoros, Nuevo Laredo and 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.
Sunday
14
November
Fiji
Summer time starts
The time will be set forward one hour 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