Leap second phase-out date to be determined after 2026
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The International Bureau of Weights and Measures made a decision in principle to switch to a continuous time scale
The resolution on the introduction of a continuous scale of universal time was adopted last week by the XXVII General Conference on Weights and Measures. This means that time services in all countries of the world, starting from 2035 or even earlier, will not add or subtract a leap second due to the uneven rotation of the Earth.
The 27th meeting of the General Conference on Weights and Measures was attended by delegations from 42 countries of the world, including Russia.
Since slowdowns or accelerations of the rotation of our planet are periodic, the participants of the conference, among other things, came to a decision related to the rejection of the so-called “jumping” second.
If, after the slowdown of the Earth’s rotation, acceleration can occur (this was recorded in July of this year), there is no point in constantly responding to such shifts in the rhythm by adding or subtracting an extra second. Moreover, such additions of a second are sometimes fraught with local failures in the operation of high-precision (with a large number of accurate parameters) instruments.
The date of the final transition to a continuous time scale will be announced after 2026, which is scheduled for the next, XXVIII General Conference on Weights and Measures.
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