Daylight saving time begins at 2 a.m. on Sunday, March 9, at which time clocks 'spring forward' and reset to 3 a.m. In the spring, clocks spring forward one hour. You will have lost an hour when you awake that morning. In the fall, clocks fall back one hour. You will gain an extra hour of potential sleep or play.

In 1986, Congress amended the Uniform Time Act, changing the beginning of Daylight Saving Time from last Sunday in April to the first Sunday in April, and having the end remain the last Sunday in October. These start and end dates were in effect from 1987 to 2006. The time was adjusted at 2 a.m. local time.

Twice a year, most Americans adjust their clocks to accommodate daylight saving time, a practice that has sparked debate and legislative efforts. While some regions opt out, others continue to follow this tradition.