In March, millions of Americans will 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.

In 2025, Americans will “spring ahead” on Sunday, March 9, marking the end of standard time and the beginning of daylight saving time. At that time, clocks will jump ahead one hour from 2 a.m. to 3 a.m.

While most states follow the biannual practice, Arizona — with the exception of the Navajo Nation — and Hawaii do not partake in daylight saving time. The U.S. territories of Puerto Rico, Guam, American Samoa, and the U.S. Virgin Islands also forgo the twice-yearly changing of the clocks.

Will we have daylight saving time this year to give us more time in the sun? President-elect Donald Trump has vowed to get rid of it. What we know

Daylight saving time will start on Sunday, March 9. The “spring forward” changeover officially takes place at 2 a.m., when we move the clocks ahead by one hour, meaning sunrise and sunset will be about one hour later on March 9 than the day before and there will be more light in the evening and less in the morning.

Here's when daylight savings time starts and ends this year and what would happen around the country if it ends permanently in 2025.

Sen. Rick Scott (R-Florida) on Jan. 8 reintroduced legislation to end changing clocks twice a year, calling it "unnecessary" and an "annoyance."

In March, millions of Americans will 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.