Home / Science / Timekeepers Eye End to Leap Second by 2027
Timekeepers Eye End to Leap Second by 2027
15 Oct
Summary
- Leap seconds synchronize atomic clocks with Earth's slowing rotation.
- Scrapping leap seconds aims to prevent tech glitches and market disruptions.
- A decision on ending leap seconds is expected by May 20, 2027.
Timekeepers are convening near Paris to decide whether to eliminate the "leap second." This periodic adjustment, last added in 2016, synchronizes global atomic clocks with the Earth's rotation, which is gradually slowing. The leap second was introduced in 1972 to maintain this alignment.
However, pressure is mounting to scrap it due to complications for financial markets and data centers. Incidents like LinkedIn and Reddit crashes in 2012 highlight these technological challenges. Engineers also report significant infrastructure management pain.
International bodies have debated this issue, with a 2022 vote proposing its end by 2035. However, specific countries, like Russia, have sought delays. The current meeting aims for a resolution by May 20, 2027.
If the leap second is abandoned, clocks will no longer track Earth's rotation directly. While this resolves technological issues, a time gap will widen over centuries, potentially affecting perceptions of natural rhythms like sunrise and sunset.
