Atomic clocks are the basis upon which a second is defined. But there is a new kid on the block, the optical clock, which ...

Trump Wants Congress to End the Changing of Clocks and Keep the Country on Daylight Saving Time WASHINGTON (AP) — President Donald Trump on Friday urged Congress to “push hard for more ...

At 2 a.m. Sunday, March 9, clocks in most of the country will jump ahead by one hour. The return of daylight saving time means the first day of spring is almost here. In 2025, the vernal equinox ...