International Timekeepers Will Abolish Leap Seconds
Metrologists will meet in Paris this October to finalize a policy change that ends fifty years of manual clock adjustments.
Updated on Sept. 28, 2026 in Space
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Will international metrologists officially abolish the leap second in October 2026?
International timekeepers plan to abolish the leap second, a practice used since 1972 to synchronize atomic clocks with the Earth's rotation. The decision, scheduled for formalization in October 2026, aims to stabilize global infrastructure.
Why it matters
The removal of the leap second addresses recurring technical outages in satellite systems and digital platforms caused by time synchronization errors. This shift transitions global timekeeping toward a more stable, continuous standard that avoids the risks of manual adjustments.
For over 50 years, atomic clocks have been periodically adjusted by one-second increments to account for Earth's fluctuating rotation. Metrologists seek to discontinue these manual updates to resolve the software-level conflicts that occur during synchronization.
The players
New Zealand
An island nation that maintains a voting seat in the international meetings deciding global timekeeping standards.
The details
Leap seconds are added to Coordinated Universal Time (UTC) to keep clocks aligned with the solar day, which is gradually lengthening. When these adjustments occur, distributed systems like satellite constellations and financial platforms risk processing errors or outages. By moving away from this adjustment, metrologists aim to ensure a consistent, continuous time stream that eliminates the need for manual system resets.
Timeline
1972: Humanity began adding leap seconds to atomic clocks.
October 2026: Metrologists will meet in Paris to formalize the abolition of the leap second.
The Tech Race
This move represents a departure from the 1972 standard set by the International Bureau of Weights and Measures (BIPM) timekeeping standards. It prioritizes the operational stability of global digital infrastructure over the traditional manual alignment with Earth's rotation.
The change will primarily impact developers of satellite systems and large-scale digital platforms that currently require manual patching during leap second insertions. While the public will not need to adjust their own devices, the shift ensures greater stability for the digital infrastructure supporting modern global communication.
The takeaway
The move marks the end of a half-century of manual clock synchronization to protect critical digital systems. Watch for the official announcement following the October 2026 meeting in Paris to determine the final timeline for implementation.
What happens next
Metrologists will meet in Paris in October 2026 to formalize the decision to abolish the leap second.
Further reading
For more on how global systems manage orbital and time-based data, see Space.
Live Poll
Will international metrologists officially abolish the leap second in October 2026?
