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Time Change 2021 in the United States

Next change:
Mar
10
1 hour Forward

Mar 10, 2019, 2:00 am

Country: United States

Long Name: United States of America

Abbreviations: US, USA

Capital: Washington DC

Time Zones: 6 (Main Country)

Total Time Zones: 11 (with dependencies)

Dial Code: +1

Mar 14

Forward 1 hour

Mar 14, 2021 - Daylight Saving Time Starts

When local standard time is about to reach
Sunday, March 14, 2021, 2:00:00 am clocks are turned forward 1 hour to
Sunday, March 14, 2021, 3:00:00 am local daylight time instead.

Sunrise and sunset will be about 1 hour later on Mar 14, 2021 than the day before. There will be more light in the evening.

Also called Spring Forward, Summer Time, and Daylight Savings Time.

Nov 7

Back 1 hour

Nov 7, 2021 - Daylight Saving Time Ends

When local daylight time is about to reach
Sunday, November 7, 2021, 2:00:00 am clocks are turned backward 1 hour to
Sunday, November 7, 2021, 1:00:00 am local standard time instead.

Sunrise and sunset will be about 1 hour earlier on Nov 7, 2021 than the day before. There will be more light in the morning.

Also called Fall Back and Winter Time.

Other years: 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024

When Does DST Start and End in the US?

Daylight Saving Time (DST) in most of the United States starts on the 2nd Sunday in March and ends on the 1st Sunday in November.

Which States and Federal Districts use Daylight Saving Time in 2021

Areas in United States using DST in 2021
Areas in United States on standard time all of 2021
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Daylight Saving Time Info

DST in States and Federal Districts in USA in 2021
(51 in total, 49 where all observe DST, 1 which doesn't observe DST, 1 with parts on DST)

AlabamaMar 14 - Nov 7KentuckyMar 14 - Nov 7OhioMar 14 - Nov 7
AlaskaMar 14 - Nov 7LouisianaMar 14 - Nov 7OklahomaMar 14 - Nov 7
Arizona (northeast)Mar 14 - Nov 7MaineMar 14 - Nov 7OregonMar 14 - Nov 7
ArizonaNo DSTMarylandMar 14 - Nov 7PennsylvaniaMar 14 - Nov 7
ArkansasMar 14 - Nov 7MassachusettsMar 14 - Nov 7Rhode IslandMar 14 - Nov 7
CaliforniaMar 14 - Nov 7MichiganMar 14 - Nov 7South CarolinaMar 14 - Nov 7
ColoradoMar 14 - Nov 7MinnesotaMar 14 - Nov 7South DakotaMar 14 - Nov 7
ConnecticutMar 14 - Nov 7MississippiMar 14 - Nov 7TennesseeMar 14 - Nov 7
DelawareMar 14 - Nov 7MissouriMar 14 - Nov 7TexasMar 14 - Nov 7
District of ColumbiaMar 14 - Nov 7MontanaMar 14 - Nov 7UtahMar 14 - Nov 7
FloridaMar 14 - Nov 7NebraskaMar 14 - Nov 7VermontMar 14 - Nov 7
GeorgiaMar 14 - Nov 7NevadaMar 14 - Nov 7VirginiaMar 14 - Nov 7
HawaiiNo DSTNew HampshireMar 14 - Nov 7WashingtonMar 14 - Nov 7
IdahoMar 14 - Nov 7New JerseyMar 14 - Nov 7West VirginiaMar 14 - Nov 7
IllinoisMar 14 - Nov 7New MexicoMar 14 - Nov 7WisconsinMar 14 - Nov 7
IndianaMar 14 - Nov 7New YorkMar 14 - Nov 7WyomingMar 14 - Nov 7
IowaMar 14 - Nov 7North CarolinaMar 14 - Nov 7
KansasMar 14 - Nov 7North DakotaMar 14 - Nov 7

DST in Other Locations in USA in 2021 (1 Location)

Palmyra AtollNo DST

Which States Don't Use DST?

Most of Arizona and Hawaii don't use DST. Indiana introduced DST in 2006.

Daylight Saving Time in Dependencies of USA

DependencyTypeDaylight Saving Time Period
American SamoaUnincorp. unorg. territoryNo Daylight Saving Time
GuamUnincorp. org. territoryNo Daylight Saving Time
Northern Mariana IslandsUnincorp. org. territoryNo Daylight Saving Time
Puerto RicoUnincorp. org. territoryNo Daylight Saving Time
US Minor Outlying IslandsTerritoryNo Daylight Saving Time
US Virgin IslandsUnincorp. org. territoryNo Daylight Saving Time

US dependencies do not use Daylight Saving Time (DST).

Daylight Saving Time History in United States

DST in the USA Today

Daylight Saving Time (DST) in the USA starts on the 2nd Sunday in March and ends on the 1st Sunday in November. The current schedule was introduced in 2007 and follows the Energy Policy Act of 2005.

According to section 110 of the act, the US Department of Transportation (DOT) governs the use of DST. The law does not affect the rights of the states and territories that choose not to observe DST.

Confusing DST Rules

Historically, there were no uniform rules for DST from 1945 to 1966. This caused widespread confusion, especially in transport and broadcasting. The Uniform Time Act of 1966 aligned the switch dates across the USA for the first time.

Following the 1973 oil embargo, the US Congress extended the DST period to 10 months in 1974 and 8 months in 1975, in an effort to save energy.

After the energy crisis was over in 1976, the DST schedule in the US was revised several times. From 1987 to 2006, the country observed DST for about 7 months each year.