The End of Leap Seconds: Impact on Timekeeping and Metrology

The long-standing practice of adjusting time with leap seconds is coming to an end. Find out how this decision will impact timekeeping and metrology in the future.

Leap seconds have traditionally been used to align the time based on the Earth’s rotation with the more stable atomic clock. However, the introduction of leap seconds has caused issues for timekeepers, leading to disruptions in computing systems and discrepancies between clocks.

With the abolition of leap seconds, the need for time adjustments will significantly decrease, potentially shifting the problem to future generations thousands of years from now.

Exploring the Future of Timekeeping Without Leap Seconds

During the 28th session of the General Conference on Weights and Measures (CGPM) held outside Paris on 15th October, members voted in favor of abolishing leap seconds. This decision was supported by Canada, with Georgette McDonald from the National Research Council of Canada’s Center for Metrology praising it for ensuring the continuity and relevance of Coordinated Universal Time (UTC) for centuries to come.

Noël Dimarque, from the Observatory of the Côte d’Azur in Nice, France, highlighted the significance of the resolution, emphasizing that an international reference timescale has been established that will endure for thousands of years.

The Future of Timekeeping: Implications for Metrology