In the U.S., clocks change at 2:00 a.m. local time. In spring, clocks spring forward from 1:59 a.m. to 3:00 a.m. In fall, clocks fall back from 1:59 a.m. to 1:00 a.m. The phrase "Spring Forward, Fall Back" is used to help people remember how to reset their clocks.

Move your clocks back one hour at the resumption of Standard Time.

Contrary to popular belief, no federal rule mandates the observance of daylight saving time. Daylight Saving time and Time zones are regulated by the U.S. Department of Transportation.