Daylight saving time didn't become standard in the US until the passage of the Uniform Time Act of 1966, which mandated standard time across the country within established time zones.

Daylight saving time starts on the second Sunday of March, pushing clocks ahead one hour. On the first Sunday in November, we set the clocks back an hour and return to standard time. It would take an ...

But daylight saving time, when clocks are set from spring to fall one hour ahead of standard time, is still recognized in most parts of the country. It was first adopted as a wartime measure in 1942.

Discover how daylight saving time affects your health, spending habits, and summer activities. Learn the history and future of this clock-changing practice.

But daylight saving time, when clocks are set from spring to fall one hour ahead of standard time, is still recognized in most parts of the country. Trump last year called for the Republican Party ...