The U.S. House of Representatives has approved legislation that would make daylight saving time permanent nationwide, advancing a long-debated proposal to eliminate the twice-yearly practice of changing clocks.
The House passed the Sunshine Protection Act of 2025 by a 308-117 vote, with support from members of both political parties. If enacted, the measure would keep the country on daylight saving time year-round, ending the spring and fall clock changes observed across most of the United States.
The bill now moves to the Senate, where a similar proposal passed unanimously in 2022 but ultimately failed to become law after it was not taken up by the House. President Donald Trump has expressed support for the legislation, arguing that eliminating seasonal time changes would reduce costs and simplify daily life.
Supporters of permanent daylight saving time say it could provide more evening daylight for outdoor activities, reduce traffic crashes, lower crime, and encourage economic activity. Opponents, however, argue the change would result in much later sunrises during the winter months, raising concerns about school safety and morning commutes.
Arizona would see little direct impact if the measure becomes law. The state, with the exception of the Navajo Nation, has not observed daylight saving time since 1968 and remains on Mountain Standard Time throughout the year. Hawaii is the only other state that does not participate in daylight saving time.