Daylight saving time will begin for 2024 on Sunday, March 10 at 2 a.m. local time, when our clocks will go ahead one hour, part of the twice-annual time change that affects millions, but not all, Americans.

In 2024, daylight saving time will begin at 2 a.m. on Sunday, March 10. It will mean losing an hour of sleep and moving the clocks around your house forward one hour, though your cell phone will likely automatically adjust. The sun will rise and set an hour later.