Ask someone on Earth for the time and they can give you an exact answer, thanks to our planet's intricate timekeeping system, ...

On Earth, knowing the time feels simple. Your phone pings the same second as a GPS satellite and an atomic clock in a lab.

At first sight, the Jantar Mantar in Jaipur could be the work of an installation artist with a line in metaphysical ...

Earth’s changing spin is threatening to toy with our sense of time, clocks and computerized society in an unprecedented way — but only for a second. For the first time in history, world timekeepers ...