Coordinated Universal Time

Coordinated Universal Time combines Earth time with atomic time, adjusting for irregularities in the Earth’s rotation every four years.

Coordinated Universal Time is the international standard for science, standard time broadcasts, radio navigation signals, television signals, and other synchronized time standards.

Most time signals broadcast by radio waves are given in Coordinated Universal Time in exact whole number of seconds, and in agreement with the time defined by the rotation of the Earth, with an approximation better than 0.9 seconds of the atomic time scale.

Coordinated Universal Time provides the basis for International Legal Time, the use of which is binding in most countries of the world.

Advertisements