💨 Abstract

The Earth is spinning faster this summer, making some days slightly shorter. On July 10, 2025, the day was 1.36 milliseconds shorter than 24 hours. Similar short days are expected on July 22 and August 5. This variation, caused by factors like the Moon's gravity, atmospheric changes, and the Earth's liquid core, impacts precise timekeeping. While minor, these variations could pose long-term issues for technology and telecommunications.

Courtesy: WTOP Staff