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Second

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Second

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Tylermadlem1220

8 Views • May 01, 2016

Wikipedia Context

The second is a unit of time derived from the division of the day, first into hours, then into minutes, and lastly into seconds, for a total of 24 × 60 × 60 = 86400 seconds per day. That definition, based on 1⁄86400 of a rotation of the Earth, is still used by the Universal Time 1 (UT1) system.

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