Leap seconds are used to allow UTC to closely track UT1, which is mean solar time at the Royal Observatory, Greenwich. Though there are scientific differences (explained below) between UTC and Greenwich Mean Time (GMT), in the broad sense as understood by non-specialists, GMT is the same thing as UTC.Ĭoordinated Universal Time is a time standard based on International Atomic Time (TAI) with leap seconds added at irregular intervals to compensate for the Earth's slowing rotation. Computer servers, online services and other entities that rely on having a universally accepted time use UTC for that purpose. 'Coordinated Universal Time (abbreviated UTC) is the time standard by which the world regulates clocks and time.
Meanwhile on the subject of synchronising / Atomic clocks / servers /
