On Jan 23, 2012, at 10:03 , Marshall Eubanks wrote:
And, of course, this is also orthogonal to the problem at hand, as UTC, GPS
time, TT, all also experience from the same issues, and it has nothing to do
with leap seconds.
A point in favor of deriving the Internet time scale directly from TAI is that
it fairly effectively reduces UTC to just another time zone, one that covers
the entire surface of the Earth, but a timezone nonetheless.
Just like every other time zone, its future divergence from TAI is
unpredictable. The principle reason is that time zones are under the control
of-- and subject to change at any time by-- various sovereign and treaty
bodies. TAI has a fairly stable foundation in non-relativistic physics, which
experience has shown to be somewhat resistant to the power of political bodies
to modify at will, so it should be good enough for most running code on the
Internet.
Shorter james: +1 for switching to TAI.
--
james woodyatt <jhw(_at_)apple(_dot_)com>
member of technical staff, core os networking
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