[tz] New Yorker article on David Mills and NTP
Steve Allen
sla at ucolick.org
Tue Oct 4 21:24:49 UTC 2022
On Tue 2022-10-04T14:20:46-0700 Paul Eggert via tz hath writ:
> Predicting length of day (LOD) is a tricky business with no real consensus.
> That being said, Tyler predicted that for the next 3 billion years LOD will
> increase roughly linearly, to 30 hours. So assuming our timekeeping
> civilization lasts long enough, eventually we'll need something, even if
> it's not leap seconds.
A decade ago two state of the art atomic clocks would agree with
other within 1 second after 300 million years.
In 300 million years a calendar based on purely atomic time will have
counted 3 billion more days than have been witnessed by people living
on the surface of Earth.
--
Steve Allen <sla at ucolick.org> WGS-84 (GPS)
UCO/Lick Observatory--ISB 260 Natural Sciences II, Room 165 Lat +36.99855
1156 High Street Voice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064 https://www.ucolick.org/~sla/ Hgt +250 m
More information about the tz
mailing list