In March, millions of Americans turn their clocks forward, marking the start of daylight saving time in 2025. Daylight saving time starts at 2 a.m. Sunday, March 9. In the spring, participating states turn clocks forward one hour on the second Sunday of March, causing us to spring forward and lose an hour of sleep.

Here's what to know about daylight saving time and when to change the clocks. When does daylight saving time start in 2025? Daylight saving time begins at 2 a.m. on Sunday, March

In March, millions of Americans will turn their clocks forward, marking the start of daylight saving time in 2025. The controversial practice of "springing forward" and "falling back" has been observed in most states for decades.