We gain an hour when daylight saving time ends, which is when the clocks are set back one hour. In the United States, this happens on the first Sunday in November at 2 a.m. local daylight time. For 2025, this date is Sunday, November 2, 2025. At that time, clocks are set back from 2 a.m. to 1 a.m., effectively gaining an hour of time.