Earth is going to spin much faster over the next few months, so fast that several days are going to get shorter
undefined 8, 2025
Earth will spin slightly faster on July 9, July 22, and Aug. 5, 2025, making each day 1.3–1.51 milliseconds shorter. This happens as the moon’s position alters its gravitational pull on Earth’s axis. While Earth's rotation has generally slowed over time (days were \~19 hours long 1–2 billion years ago), recent years have seen speed variations. Factors include moon distance, earthquakes, seasonal mass shifts, and climate change. These tiny changes don't affect daily life but are tracked to keep clocks aligned.
Read full article
