[LEAPSECS] fb/meta join the leap second haters

Poul-Henning Kamp phk at phk.freebsd.dk
Wed Jul 27 02:35:31 EDT 2022


--------
Steve Allen writes:
> On Tue 2022-07-26T23:33:15+0000 Poul-Henning Kamp hath writ:
> > So looking at the IERS LOD plot going all the way back it seems to
> > me that we have been missing the big signal for about five decades:
> >
> >       https://datacenter.iers.org/singlePlot.php?plotname=EOPC04_14_62-NOW_IAU2000A-LOD&id=224
> >
> > How did we not notice that earlier ?
>
> even better is the view from the Paris bureau at
> https://hpiers.obspm.fr/eop-pc/index.php
> which at the moment is showing a Vondrak filtering

But only from 2000 forward, would be interesting to see it
for the full data-set.

> The rotation of the earth's crust started accelerating right when
> the CCIR decided that we should start using leap seconds.

Yes, it does indeed look like 1970-ish is a turning point, but it
is always dangerous to declare such to close to the end of the
data...

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


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