Sunday at 2 a.m. marks the official time to turn back clocks to 1 a.m. all over much of the U.S.

However, most people turn back their clocks Saturday night before they go to bed.

The Energy Policy Act of 2005 changed both the starting and ending dates. Beginning in 2007, daylight time starts on the second Sunday in March and ends on the first Sunday in November.

Don’t forget to set your clocks back.