Overview

• Daylight saving time starts on Sunday, March 9, 2025, at 2 a.m., with clocks moving forward by one hour until November 2.
• The practice, originally introduced during World War I to conserve energy, has been federally standardized since 1966 but remains contentious.
• Health experts warn of increased risks of sleep deprivation, heart issues, and circadian rhythm disruptions linked to the time change.
• A majority of Americans support ending the clock-changing practice, with 19 states passing legislation to adopt permanent daylight saving time pending federal approval.
• The Sunshine Protection Act, which would make daylight saving time permanent, has stalled in Congress despite bipartisan support and recent reintroduction.