TAG: UTC

Expert Advice: A Leap Second — One More Time!

April 30, 2015By
From left: Dennis McCarthy, Wayne Hanson, Ronald Beard and William Klepczynski

Once again we are going to adjust the world’s clocks by one second. This time it will happen on June 30, when we insert another leap second in Coordinated Universal Time (UTC), the standard international time scale. In theory, all UTC clocks should insert a second labeled 23h 59m 60s (the leap second) following one labeled 23h 59m 59s UTC. This is equivalent to having all of the clocks in the world stop for one second at that time. Are you ready for it? read more

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Galileo Now Tells UTC Time

April 25, 2013By
Galileo_for_timing

Europe’s four Galileo satellites are now working as clocks accurate to a few billionths of a second, disseminating the exact time through their signals expressed as the UTC Universal Coordinated Time global standard, reports the European Space Agency. “A billionth of a second equals a nanosecond, a time interval far beyond our own human capacity of appreciation,” explains Marco Falcone,... read more

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