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Earth's Rotation Speeds Up: Leap Second Possible by 2035

7/26/2025

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Summary

Story summary

Earth's rotation is speeding up, resulting in days that are 1.3 to 1.5 milliseconds shorter than the usual 24 hours. This unexpected shift has sparked conversations about the possibility of a negative leap second. Scientists point to factors like the moon's position, with a 30% chance of this phenomenon occurring by 2035.

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Story summary

Earth's rotation is speeding up, resulting in days that are 1.3 to 1.5 milliseconds shorter than the usual 24 hours. This unexpected shift has sparked conversations about the possibility of a negative leap second. Scientists point to factors like the moon's position, with a 30% chance of this phenomenon occurring by 2035.