Re: [Ntp] Timescales, leapseconds and smearing

[Steve Allen <[e-mail]>]

On Tue 2020-12-08T00:23:06+0100 Kurt Roeckx hath writ:
> On Mon, Dec 07, 2020 at 03:02:28PM -0800, Steve Allen wrote:
> > On Mon 2020-12-07T23:27:35+0100 Kurt Roeckx hath writ:
> > > I'm not sure about the
> > > UT1 scale in the draft but assume it's non-continues.
> >
> > UT1 as it is made available is piecewise continuous.
> > UT1 is given in the form of tables of (UT1 - UTC) for various dates.
> > An implementation would have to determine whether to use linear
> > interpolation or something with higher order.
>
> I was talking about the time around the leap second. Where the
> encoding in the NTP protocol might removed the leap seconds, or
> includes the leap seconds.

If correctly implemented the continuity of a UT1-like scale around a
leap second should not differ from the continuity of that UT1-like
scale at any other time.  Whatever filtering and interpolation is
being done to produce the UT1-like scale should be aware of the
leap second and aware that UT1 itself is unaffected by that.

--
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