Concerning Time.TimeDiff

[Simon Marlow]

=20
> Simon Marlow wrote:
> > John suggested using (pico)seconds since 1970-01-01=20
> 00:00:10 TAI.  Isn't this equivalent to saying that ClockTime=20
> is the number of
> > seconds since 1970-01-01 00:00:00 UTC?
>=20
> Yes.
>=20
> TAI started ticking on 1 Jan 1958.
>=20
> UTC started ticking on 1 Jan 1972, and started 10 seconds=20
> behind of TAI
> (to keep it within 0.9 sec of UT1).

So before 1 Jan 1972, UTC is defined as being the same as TAI?  Or is it
just undefined?

Cheers,
	Simon