[ntp:questions] Lep seconds
joegwinn at comcast.net
Fri Jan 4 03:10:29 UTC 2008
In article <T1199401837 at ex.djwhome.demon.co.uk.invalid>,
david at ex.djwhome.demon.co.uk.invalid (David Woolley) wrote:
> In article <298286.52982.qm at web55415.mail.re4.yahoo.com>,
> marknmbox-88 at yahoo.com wrote:
> > compliant. Is there a similar mod for NTP. I am
> > hoping that there is a mod that will cause NTP to
> > supply theoretical UTC (even if it is not ascci).
> Both POSIX and NTP use UTC. Your problem is that you are not using
> using UTC, but, rather, using TAI.
Actually, POSIX does *not* use UTC in the normal sense of the word, as
no leap seconds are applied.
The fundamental POSIX timescale counts what amount to SI seconds from
the POSIX Epoch, 0h 0m 0s UTC 1 January 1970. Every day contains
exactly 86,400 seconds.
That said, if one drives a POSIX box via NTP from a GPS timeserver set
to emit UTC (versus GPS System Time), time on the POSIX box will be
pretty close to UTC.
More information about the questions