Daylight saving time became a national standard in 1966 when President Lyndon B. Johnson signed the Uniform Time Act, which was established as a way to continue to conserve energy. The thinking was if it's light out longer, that's less time you'll need to use the lights in your house.

In March, millions of Americans turn their clocks forward, marking the start of daylight saving time in 2025. The controversial practice of "springing forward" and "falling back" has been observed in most states for decades.

As the practice of DST continues to spark debate, here's your guide to when the clocks spring forward in 2025.

There are several things you can do to help your body prepare for the upcoming time change and now is the perfect time to start.

Is it time to stop changing our clocks twice a year? Here's a state-by-state look at efforts to make daylight saving time permanent.

As clocks turn forward, we lose an hour of sleep at 2 a.m. Sunday when Daylight Saving Time begins. What time will the sun rise Sunday morning, March 9

Clocks "spring forward" in the U.S. and Canada on March 9 and in the U.K. and Europe on March 30, 2025. Here's exactly when — and why we have Daylight Savings Time.

There are several sure indications that another cold winter is coming to a close and spring is on the way. Weeks before the spring equinox arrives on March 20, the air starts getting warmer, days become longer and there are new signs of life in plants and animals.