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    Re: Negative leap second?
    From: Sean C
    Date: 2021 Jan 5, 14:16 -0800

    This is being discussed on the LEAPSECS mailing list (of course). One user wrote:

    "The November 19, 2020 IERS Bulletin A (volume XXXIII number 047) has this line:

             UT1-UTC = -0.1728 + 0.00001 (MJD - 59180) - (UT2-UT1)                 

    Taking this prediction of UT2 literally, it suggests that the next leap second will be on June 30, 2246, and it will be negative."

    ... and even the article posted by Gary quotes a researcher at the National Physical Laboratory as saying:

    "It's quite possible that a negative leap second will be needed if the Earth's rotation rate increases further, but it's too early to say if this is likely to happen." [emphasis added]

       
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