The clock will strike 1 a.m. twice Sunday morning as daylight saving time once again comes to an end.
Here’s what you need to know about daylight saving time and why the U.S. changes clocks twice a year.
Daylight saving time began March 10 and ends Nov. 3.
In 2025, daylight saving time starts on Sunday, March 9, and ends on Sunday, Nov. 2, when it’s time to repeat the process.
In the Northern Hemisphere, most of the countries that observe daylight saving time are in Europe and North America.
Persons:
Karin Johnson, Kin Yuen
Organizations:
U.S, Astronomical, Department, Pew Research Center, U.S . Senate, Protection, National Conference of State Legislatures, UMass Chan Medical, NBC News, University of California, American Academy of Sleep
Locations:
U.S, Hawaii, Arizona, Europe, North America, Southern, San Francisco