December 13th, 2008

leap second

December 31st will be a long day this year. One second longer, to be exact. The earth’s trip around the sun doesn’t exactly correspond to our calendar, as it takes 365.2422 days. That’s why we add a day for leap year every four years, but it still doesn’t come out even, so every once in a while, another second is added to the last day of the year

I mustn’t forget to set my clock back.

Also via neatorama

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