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Re: [Ntp] Leap second draft

Kurt Roeckx <kurt@roeckx.be> Sat, 30 March 2019 23:52 UTC

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Date: Sun, 31 Mar 2019 00:52:49 +0100
From: Kurt Roeckx <kurt@roeckx.be>
To: Steve Allen <sla@ucolick.org>
Cc: NTP WG <ntp@ietf.org>
Message-ID: <20190330235249.GK7706@roeckx.be>
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Subject: Re: [Ntp] Leap second draft
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On Sat, Mar 30, 2019 at 12:44:28PM -0700, Steve Allen wrote:
> So long as civil calendar days are based on measurements of the
> rotating earth the long-term behavior of simple differences between
> time stamps of UTC and NTP match the mean solar second, not the SI
> second.
> 
> Are you sure that you want to specify that NTP uses the SI second?

You seem to be looking NTP time as continues timescales, which
it's not, and that's the reason why this draft exists. In the
parts that it's continues, NTP's seconds are (currently) SI seconds.

Anyway, I think we should avoid defining what things like NTP
time, UTC and TAI is. They should all have external definitions
we can just point to.


Kurt

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