In the United States Daylight Saving Time begins at 2:00 a.m. local time on the second Sunday in March. On the first Sunday in November areas on Daylight Saving Time return to Standard Time at 2:00 a.m. When Daylight Saving Time begins in the United States turn your clocks ahead one hour. At the end of Daylight Saving Time turn your clocks back one hour.

United States Daylight Saving Time Start and End Dates

Year DST Begins at 2 a.m. DST Ends at 2 a.m. 2020 March 8 November 1 2021 March 14 November 7 2022 March 13 November 6 2023 March 12 November 5 2024 March 10 November 3

Previous Years Start and End Dates

Year DST Begins at 2 a.m. DST Ends at 2 a.m. 2019 March 10 November 3 2018 March 11 November 4 2017 March 12 November 5 2016 March 13 November 6 2015 March 08 November 1 2014 March 09 November 2 2013 March 10 November 3 2012 March 11 November 4 2011 March 13 November 6 2010 March 14 November 7 2009 March 08 November 1

The names in each time zone change along with Daylight Saving Time. Eastern Standard Time (EST) becomes Eastern Daylight Time (EDT), and so forth. Arizona, Puerto Rico, Hawaii, U.S. Virgin Islands and American Samoa do not observe Daylight Saving Time.

In the United States, Under the Uniform Time Act, the Department of Transportation is in charge of time zones in the United States and ensuring that jurisdictions observing Daylight Saving Time begin and end on the same date.

On Monday August 8, 2005 President Bush signed into law a broad energy bill that extended Daylight Saving Time by four weeks beginning in 2007. As a result of the provisions in the bill Daylight Saving Time now begins three weeks earlier on the second Sunday in March and ends on the first Sunday in November. The United States had previously observed Daylight Saving Time from the first Sunday in April through the last Sunday in October.