The leap second is dead. Long live the leap hour?0

• SCIENCE, Science / Health, Science Mission Directorate, scientists, Space, Space Communications & Navigation Program, Space Launch System (SLS), Space Telescope, space-x-ipo, SpaceX
• August 31, 2026

A negative leap second could mean computer systems no longer run like clockwork. Credit: Florian Gaertner/Photothek/Getty The leap second could be scrapped as soon as October. The periodic adjustment to the world’s clocks, which has been done every few years since 1972, was already set to end by 2035. But authorities are considering an immediate