Daylight Saving Time 2025: What You Need to Know
This weekend, most Americans will lose an hour of sleep as daylight saving time (DST) begins. On Sunday, March 9, at 2 a.m. local time, clocks will “spring forward” one hour.
What is Daylight Saving Time?
Daylight saving time is the period between March and November when Americans adjust their clocks ahead by one hour. This allows for more daylight in the summer evenings.
When Does Daylight Saving Time Start and End?
Daylight saving time begins on Sunday, March 9, at 2 a.m. local time, and ends on Sunday, November 2.
Which States Don’t Observe Daylight Saving Time?
Hawaii and most of Arizona do not observe daylight saving time. Arizona’s desert climate means that adjusting clocks to make sunset occur an hour later during the hottest months is not necessary.
History of Daylight Saving Time
The Standard Time Act of 1918 was the first law to implement standard and daylight saving times at the federal level. The Department of Transportation (DOT) oversees the observance of daylight saving time and U.S. time zones.
Is Daylight Saving Time Ending?
Recent bills aimed at making daylight saving time the national year-round standard have stalled in committee. However, the DOT cites energy reduction and reduced crime as reasons for maintaining both standard and daylight saving time.