To prevent the atomic clocks running away with themselves as Earth slows down, the IERS tries to keep Coordinated Universal Time and Universal Time to within 0.9 seconds of each other.

Because astronomers have divided the globe into 24 time zones, using one clock time worldwide is impractical. That’s why the times of astronomical events are often given in Universal Time (UT).

A new atomic clock is one of the world’s best timekeepers, researchers say — and after years of development, the “fountain”-style clock is now in use helping keep official U.S. time. Known ...

T he universal need to be on time keeps everyone on the move, shaping society into a permanently well-oiled machine. Whether you find yourself glancing at a clock on the wall or checking your ...

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. ... called Coordinated Universal Time or UTC.

Get information about the Coordinated Universal Time time zone. Local time and date, DST adjusted (where ever daylight saving time is applicable) current time in all cities/countries belonging to Time ...

No leap second will be added to universal time in 2024, the International Earth Rotation and Reference Systems Service (IERS) has announced. An additional second has previously been added to the ...

Altogether, these clocks decide Coordinated Universal Time (UTC), the global system for measuring time. According to a statement from NIST, the new clock is so reliable that if it started to run when ...