[tz] What data should TZDB offer?

Steve Allen sla at ucolick.org
Mon Jun 7 19:54:15 UTC 2021

On Mon 2021-06-07T20:14:00+0100 Clive D.W. Feather via tz hath writ:
> I was wandering round the Fitzwilliam Museum in Cambridge the other day and
> noticed a Thomas Tompion (1639-1713) clock. It had two hands and a dial
> with Roman numerals I to XII twice going round it. Outside that, in Arabic
> numerals, were 5, 10, ..., 60, also twice. At the top it said "EQVAL 60 TIME".

> So 1800 is perhaps a bit late, at least for some places.

A clock of this quality would be sold as a "regulator" and priced
accordingly.  Not even most observatories had clocks accurate to one
second until around 1800.  If one second is the standard then 1800 is
a good guess at the year.

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