When you buy through links on our articles, Future and its syndication partners may earn a commission. The Earth's rotation has accelerated in recent decades, leading scientists to consider adding the ...

Earth will complete its daily rotation between 1.25 and 1.51 milliseconds faster than usual, and scientists aren't quite sure why.

Earth takes 24 hours to complete a full rotation in a standard day, equal to exactly 86,400 seconds. July 9 was the first of three days in which a millisecond or more could be shaved off the clock on ...

WASHINGTON — Wednesday will be slightly shorter than usual, but you probably won't notice the difference even if you're watching the clock closely. Earth is expected to complete a full rotation on ...

If you haven’t accomplished as much this summer as you had hoped to, you can blame forces far beyond your control: a few of these dog days, by one measure, are among the shortest you’ve ever lived ...

Wednesday (July 9) is predicted to have been an unusually short day, lasting 1.3 milliseconds less than average, as the Earth spun faster on its axis. However, even shorter days are yet to come, with ...

Earth is spinning so fast that global timekeepers are considering something that's never been done before: adding a negative leap second. So far this year, July 9 and July 22 have been unusually short ...