On Fri, 8 Jul 2022 at 10:45, Howard Hinnant via tz <tz@iana.org> wrote:
https://datacenter.iers.org/data/latestVersion/16_BULLETIN_C16.txt
There will be no leap second at the end of Dec. 2022. The leap second file expiration date should be updated prior to releasing 2022b.
Noted. The announcement was made by IERS on Monday 4 July, but at time of writing, NIST have not published an updated version of the file yet; I've been checking periodically. ;) The first Bulletin D in a year was also published this week, announcing that DUT1 signals will change from -0.1 to 0.0 on 28 July 2022: https://datacenter.iers.org/data/latestVersion/17_BULLETIN_D17.txt This is the second consecutive positive (or perhaps "backwards") step in DUT1 transmissions, as the average recent day length remains slightly short of 86,400 SI seconds. While UT1-UTC approaching zero definitionally means we're now about as far as we can get from needing a leap second (without, of course, having just had one), if this trend continues, we'll soon be closer to needing a negative leap second than a positive one. -- Tim Parenti