Forward 1 hour
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.
Back 1 hour
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.
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.
DST in States and Federal Districts in USA in 2021
|Alabama||Mar 14 - Nov 7||Kentucky||Mar 14 - Nov 7||Ohio||Mar 14 - Nov 7|
|Alaska||Mar 14 - Nov 7||Louisiana||Mar 14 - Nov 7||Oklahoma||Mar 14 - Nov 7|
|Arizona (northeast)||Mar 14 - Nov 7||Maine||Mar 14 - Nov 7||Oregon||Mar 14 - Nov 7|
|Arizona||No DST||Maryland||Mar 14 - Nov 7||Pennsylvania||Mar 14 - Nov 7|
|Arkansas||Mar 14 - Nov 7||Massachusetts||Mar 14 - Nov 7||Rhode Island||Mar 14 - Nov 7|
|California||Mar 14 - Nov 7||Michigan||Mar 14 - Nov 7||South Carolina||Mar 14 - Nov 7|
|Colorado||Mar 14 - Nov 7||Minnesota||Mar 14 - Nov 7||South Dakota||Mar 14 - Nov 7|
|Connecticut||Mar 14 - Nov 7||Mississippi||Mar 14 - Nov 7||Tennessee||Mar 14 - Nov 7|
|Delaware||Mar 14 - Nov 7||Missouri||Mar 14 - Nov 7||Texas||Mar 14 - Nov 7|
|District of Columbia||Mar 14 - Nov 7||Montana||Mar 14 - Nov 7||Utah||Mar 14 - Nov 7|
|Florida||Mar 14 - Nov 7||Nebraska||Mar 14 - Nov 7||Vermont||Mar 14 - Nov 7|
|Georgia||Mar 14 - Nov 7||Nevada||Mar 14 - Nov 7||Virginia||Mar 14 - Nov 7|
|Hawaii||No DST||New Hampshire||Mar 14 - Nov 7||Washington||Mar 14 - Nov 7|
|Idaho||Mar 14 - Nov 7||New Jersey||Mar 14 - Nov 7||West Virginia||Mar 14 - Nov 7|
|Illinois||Mar 14 - Nov 7||New Mexico||Mar 14 - Nov 7||Wisconsin||Mar 14 - Nov 7|
|Indiana||Mar 14 - Nov 7||New York||Mar 14 - Nov 7||Wyoming||Mar 14 - Nov 7|
|Iowa||Mar 14 - Nov 7||North Carolina||Mar 14 - Nov 7|
|Kansas||Mar 14 - Nov 7||North Dakota||Mar 14 - Nov 7|
DST in Other Locations in USA in 2021 (1 Location)
|Palmyra Atoll||No DST|
|Dependency||Type||Daylight Saving Time Period|
|American Samoa||Unincorp. unorg. territory||No Daylight Saving Time|
|Guam||Unincorp. org. territory||No Daylight Saving Time|
|Northern Mariana Islands||Unincorp. org. territory||No Daylight Saving Time|
|Puerto Rico||Unincorp. org. territory||No Daylight Saving Time|
|US Minor Outlying Islands||Territory||No Daylight Saving Time|
|US Virgin Islands||Unincorp. org. territory||No Daylight Saving Time|
US dependencies do not use Daylight Saving Time (DST).
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.
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.
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.