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leap second

   Also found in: Dictionary/thesaurus, Acronyms, Wikipedia 0.03 sec.
leap second - Coordinated Universal Time


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In order for our civil time (UTC based on TAI) to keep "in step" with the changing earth rotational speed, UT1 leap seconds are added to the year from time to time to compensate for this slowing down.
As the final countdown, which very correctly observed the leap second, reached its end the crowd spontaneously burst into a few lines of "Auld Lang Syne".
SILENT movie actor Harold Lloyd demonstrates one way of fixing the leap second.
 
 
 
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