US EditionDid You Feel It? Earth Just Had One of Its Shortest Days Ever and 2 More Are Coming
GLOBAL, JUL 10 – Earth's rotation sped up in July 2025 due to the moon's position, making days 1.3 to 1.6 milliseconds shorter, the shortest since modern records began, NASA confirmed.
- On July 9, 2025, Earth experienced its quickest rotation in decades, with the length of the day reduced by roughly 1.3 to 1.6 milliseconds compared to the usual 24 hours.
- This speed-up stems from factors like the moon’s position, seasonal shifts, and redistribution of Earth's mass caused by melting ice and groundwater.
- Scientists track these subtle changes closely and expect two more short days on July 22 and August 5, partly influenced by the moon’s gravitational pull.
- The global organization responsible for monitoring Earth's rotation reported that July 9 was the shortest day ever recorded, and noted that no leap second has been added since 2016.
- If Earth’s rotation continues accelerating, timekeepers may need to remove a leap second from official time, a first in history, though timing remains uncertain.
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Earth's rotation could speed up. If the planet were to spin faster, not only time but also the order of the world could be disrupted.
·Budapest, Hungary
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Faster Earth Rotation on Three Summer Days Could Shift How We Track Time
Experts confirm the world spins faster for 3 days straight. Credit: NASA / CC BY-NC 2.0 The world is spinning faster for 3 days this summer, scientists say, with Earth having completed its rotation slightly quicker on July 9, and expected to do so again on July 22 and August 5. Though the change is measured in milliseconds, experts say it highlights a deeper shift in how we measure time—and how nature and technology must stay aligned. On these d…
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