Daylight Savings Time

When does Daylight Savings Time begin and end?

Starting in 2007, daylight time begins in the United States on the second Sunday in March and ends on the first Sunday in November. On the second Sunday in March, clocks are set ahead one hour at 2:00 a.m. local standard time, which becomes 3:00 a.m. local daylight time. On the first Sunday in November, clocks are set back one hour at 2:00 a.m. local daylight time, which becomes 1:00 a.m. local standard time.


See 15 U.S. Code Section 260a .

WebExhibits offers a good description of changes and irregularities in DST.

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