Just variation of Earth’s rotational speed over time, AFAIK.http://leapsecond.com/java/gpsclock.htm -- TAI is SI second ticks, UTC is corrected to rotation by leap seconds. Currently they are 37 seconds apart.
_______________________________________________AdamOn Sep 8, 2021, at 6:22 PM, Dave Horsfall <dave@horsfall.org> wrote:Ah, leap seconds. I work for an observatory. Some things are in TAI and some are in UTC. At least now I know what to look for when something is 37 seconds off.
Isn't about that the transit of the Moon or something?
-- Dave_______________________________________________
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