GoKawiilBIPM moves leap second retirement to May 2027, citing system risks
The International Bureau of Weights and Measures has voted to accelerate the end of leap seconds, shifting the planned retirement from 2035 to May 20, 2027. The move comes amid rising odds—estimated at 30% by 2035—that an unprecedented 'negative leap second' would be required to keep Coordinated Universal Time aligned with Earth's rotation.