Month of June Will Be One Second Longer This Year

If your birthday is June 30, our planet has a special gift for you this year. Thanks to Earth’s rotation, your special day will last 24 hours and one second.

Come midnight Coordinated Universal Time June 30, the official time will read 23:59:60 rather than resetting to 00:00:00. The extra second, or “leap second,” is needed to resynchronize our land-based clocks with Earth’s rotation, which is slowing down ever so slightly each year. This is the 26th time we’ve added a second to the day s

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