Atomic clocks — among the most precise instruments humans have ever built — have been keeping track of Earth’s spin since the ...

Earth is spinning faster, making July 9, 2025, the shortest day since 1960 by 1.3 to 1.6 milliseconds, primarily due to the Moon's alignment. While imperceptible in daily life, this speedup may ...

While that tiny time difference is imperceptible to humans, it represents part of a broader pattern that has left scientists ...

Earth's shortest day on record is expected this Wednesday, with more shorter days on July 22 and August 5 due to the Moon's position, causing Earth to spin faster by 1.3 to 1.51 milliseconds.