[LEAPSECS] Leap smear

Tom Van Baak tvb at LeapSecond.com
Tue Sep 20 16:14:33 EDT 2011



> Wrong! I care, and I'm not an astronomer. There have also been one or

> two other people on this mailing list who aren't astronomers, but who

> object to the redefinition of the day on purely philosophical grounds

> like I do.

>

> MS


Michael,

Welcome back to the list. So I wondered about your project as
soon as I read the google NTP article. Is their hack also how
you implement your private NTP(UT1) server? The beauty of
that solution is that you only have to make a change to the NTP
server(s); all clients on the net work without any changes at all.

It seems all you'd have to do is change the google lie() function
to your own private lie() -- one that looks up DUT1 for the current
day. Handling day boundaries smoothly would depend on how
close to UT1 you want to be, philosophically. The IERS publishes
past, present, and future DUT1 to sub-millisecond resolution, but
I don't know if you want to interpolate from day to day, or if the
IERS quantized time/rate jumps every midnight are acceptable.

/tvb




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