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.

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.

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

While most states, 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.

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.

A Republican lawmaker who represents parts of six rural Nevada counties is sponsoring a bill to take the state off daylight saving time — one of the 200 bills written so far.