When does Daylight Saving Time/Standard Time begin?
Daylight Saving Time begins each year at 2 a.m. on the second Sunday of March. Move clocks ahead one hour at the start of Daylight Saving Time. Standard Time begins each year at 2 a.m. on the first Sunday of November. Move your clocks back one hour at the resumption of Standard Time. Daylight Saving time and Time zones are regulated by the U.S. Department of Transportation, not by NIST. In 2009, Daylight Saving Time begins on March 8 and ends on Nov.1. In 2010, Daylight Saving Time begins on March 14 and ends on Nov.7.
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