Now a Japanese company has commercialized one approach—an optical-lattice clock it claims is the most accurate on the market.

U.S. lawmakers held their first hearing Thursday in more than three years on a long-running debate to end the practice of ...

Precision equipment manufacturer Shimadzu Corp. said it has created the world’s most accurate time device: a clock that won’t deviate by 1 second even after operating for 10 billion years.

Daylight saving time begins in March, when clocks are moved forward an hour ... It is something we have been stuck with since World War I, and this is our opportunity to finally fix it." The Senate in ...

The custom made a comeback in World War II ... to take the proposal forward," it said. "As the clock is ticking, we will take our time to assess the situation." - It's about time - For Kelly ...

One of the world's largest clocks sits atop a former soap factory in Clarksville, Indiana. The Colgate clock, with a 40-foot diameter, has been telling time since 1924. High atop a former soap ...