After years of stalled negotiations and bipartisan debate, the U.S. House of Representatives has taken a historic step to end the decades-long practice of twice-annual clock changes, passing the Sunshine Protection Act with overwhelming bipartisan support in a Tuesday vote. The final tally came in at 308 in favor to 117 opposed, codifying a shift to permanent daylight saving time – the clock setting currently observed across most of the U.S. from March through November each year. Under the terms of the legislation, states and territories that currently maintain full or partial exemptions from daylight saving time will retain the authority to opt for permanent standard time in their exempt jurisdictions. The push to eliminate seasonal clock changes has built cross-party momentum for more than a decade, after the U.S. Senate approved a nearly identical version of the bill back in 2022. That earlier measure, however, never advanced to a floor vote in the House, leaving the policy in legislative limbo until this week’s vote. Unlike the 2022 proposal, this iteration of the Sunshine Protection Act has secured the public backing of former president and current 2024 presidential candidate Donald Trump, clearing a key political hurdle for its passage. The origins of the U.S.’s seasonal clock-changing system date back to World War I, when policymakers first adopted daylight saving time as an energy conservation measure, designed to extend afternoon daylight hours and cut electricity consumption during the wartime production push. Under the current system, clocks are moved forward one hour in spring to enter daylight saving time, then rolled back one hour each autumn to return to standard time. For years, medical researchers, business groups and public health advocates have raised concerns about the negative impacts of twice-annual clock shifts, citing links to increased rates of heart attacks, traffic accidents, workplace productivity dips and disrupted sleep patterns. Those concerns have fueled growing congressional support for scrapping the seasonal change entirely, with lawmakers coalescing around the permanent daylight saving model to unlock the economic and public health benefits of consistent, longer afternoon daylight year-round. The bill now moves to conference committee to reconcile differences between the House and Senate versions before heading to the White House for presidential signature.
US House of Representatives passes Trump-backed bill to make daylight saving time permanent
