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  Science   29 Dec 2016

Science, 29 Dec 2016

This year to last a second longer!

The extra second will be inserted at the US Naval Observatory's Master Clock Facility in Washington, DC.

29 Dec 2016 2:13 PM

5. 4. 3. 2. 1. 1... An extra second to see out 2016

This extra second, or leap second, makes it possible to align astronomical time, which is irregular and determined by Earth's rotation.

29 Dec 2016 7:57 AM

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