[LEAPSECS] Civil timekeeping before 1 January 1972

Tony Finch dot at dotat.at
Mon Mar 9 08:40:15 EDT 2015

Brooks Harris <brooks at edlmax.com> wrote:
> On 2015-03-07 03:01 PM, Steve Allen wrote:
> > I would say that the intent NTP and POSIX is to correspond to civil
> > time in contemporary use.  Therefore, for dates before 1972-01-01
> > NTP and POSIX are counting seconds of UT.
> This paragraph in your email had me scratching my head a little.
> I think none of the "civil" timescales are counting in UT - they are
> measured in SI Seconds, even when prolpetic to 1972.
> Am I missing something here?

POSIX time is defined by a mapping from broken-down civil time labels to a
scalar value. Currently civil time is UTC; in the past it was some other
variant of UT.

f.anthony.n.finch  <dot at dotat.at>  http://dotat.at/
Southeast Biscay, Southeast Fitzroy: Variable 4. Rough. Fair. Good.

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