Daylight saving time 2025 starts March 9 and ends November 2

In 2025, daylight saving time will begin on March 9, when clocks will move forward one hour at 2:00 a.m. This change will mark the start of the longer daylight period. The end of daylight saving time in 2025 will occur on November 2. At 2:00 a.m., clocks will be set back one hour to 1:00 a.m. Some areas in the United States do not observe daylight saving time, including most of Arizona and Hawaii, where the time change does not apply.