[LEAPSECS] negative leap second milestone

Michael Deckers Michael.Deckers at yahoo.com
Mon Aug 28 09:33:48 EDT 2023


    On 2023-08-26 17:58, John Sauter via LEAPSECS wrote:

> According to the IERS, today, for the first time since the
> establishment of the modern definition of UTC in 1973, the quantity
> UT1-UTC crosses zero while increasing.  If this continues we will have
> a negative leap second, probably some time in the 2030s.
>
> https://datacenter.iers.org/data/html/bulletina-xxxvi-034.html



    I do not think that a negative leap second is coming up so
    soon with the latest predictions of the IERS. At the
    currently predicted LOD of -0.08 ms/d, it takes 24 years
    for UT1 - UTC to increase from 0.0 s to 0.7 s; and by then,
    leap seconds will have been "suspended".

    Michael Deckers.




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