When Does Daylight Savings Time Start In 2024 Usa. Daylight saving time began in 2024 on sunday, march 10 at 2 a.m. Daylight saving time, or dst, is the period of the year when clocks are moved one hour ahead.

3, 2024, when clocks fall back by an hour. Sunrise and sunset will be about 1 hour later on march 9,.