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Earth’s Spin Is Speeding Up, Possibly Making 8/5/25 1.25 ms Shorter. 7/5/24 Was The Shortest Day Ever, 1.66 ms Shorter. Scientists May Subtract A Second, A Historic First, To Align Atomic & Solar Time. The Speed Cause Is Unclear, But Melting Ice And Sea Rise May Play A Role. Tech Risks From A Negative Second Change Are Still Being Assessed.

Earth is spinning faster and is about to see one of its shortest days ever | The Independent

https://www.the-independent.com/space/earth-spinning-faster-day-shorter-time-b2794578.html

No one is quite sure why the Earth’s rotation is speeding up, but it could be to do with melting ice caps