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The leap second will be retired in favor of a leap hour starting in 2027.

TimekeepingTechnologyInternational RelationsOct 16, 2026score 0.562 posts · 1 replies across 2 instances
An international group of scientists, diplomats, and timekeepers voted to end the leap second, which has been used to keep Coordinated Universal Time (UTC) aligned with Earth's rotation. The decision aims to reduce risks to computer systems by replacing the leap second with a leap hour starting in 2027. This change addresses the irregular rotation of Earth and the potential disruptions caused by leap seconds.

Claims

The leap second will be retired in favor of a leap hour starting in 2027.
Parent: TimekeepingEntity: Leap SecondImpact: negativeDate: Oct 16, 2026Target: Retirement of the leap second
Retiring the leap second reduces risks to computer systems.
Parent: TechnologyEntity: Computer SystemsImpact: positiveDate: Oct 16, 2026Target: Risk reduction for computer systems

Source posts

@[email protected]
「 Today an international group of scientists, diplomats and timekeepers voted to end the leap second, which has been keeping Coordinated Universal Time (UTC) aligned with the time according to Earth’s rotation (UT1) within one second of difference. The length of a day according to UTC is close to that of UT1 but not exactly the same because our planet’s rotation is irregular. We add a leap second every few years to keep them from drifting too far apart 」 https://www.scientificamerican.com/article/scientists-vote-to-end-leap-seconds-redefining-how-the-world-keeps-time/ #leapsecond
3 boosts · 4 favs · 1 replies · Oct 16, 2026
#leapsecond
@[email protected]
⏰ NEWS: Delegates from 69 countries at the International Bureau of Weights and Measures voted to retire the leap second in favor of a leap hour starting in 2027. Atomic #clocks kept precise time while #Earth’s uneven rotation drifted, and the 2012 leap second froze servers and delayed flights, so the change reduces risk to #computer systems. 👉 https://www.theguardian.com/science/2026/oct/15/times-up-for-the-leap-second-as-scientists-swap-it-for-the-leap-hour #time #atomicclock #leapsecond #earth #physics #tech #technology #satellites #standards #science #education
0 boosts · 1 favs · 0 replies · Oct 16, 2026
#clocks#earth#computer#time#atomicclock#leapsecond