[LEAPSECS] UT1 via NTP

[Gary E. Miller]

Yo Hal!

On Mon, 19 Mar 2018 12:41:46 -0700
Hal Murray <hmurray at megapathdsl.net> wrote:

> Perhaps we should setup a simple UDP server that responds with the
> UT1-UTC offset.  The idea is that you can get a good UTC via GPS or
> good local NTP servers.

How about the client just downloads the daily UT1 to UTC correction
data, then adjusts UTC(GPS)?

    http://maia.usno.navy.mil/ser7/ser7.dat

Here is a sample of this week's report:

                              IERS Rapid Service                               
              MJD      x    error     y    error   UT1-UTC   error             
                       "      "       "      "        s        s               
   18  3  9  58186 0.00803 .00009 0.36036 .00009  0.157823 0.000011          
   18  3 10  58187 0.00857 .00009 0.36159 .00009  0.157100 0.000006          
   18  3 11  58188 0.00974 .00009 0.36269 .00009  0.156399 0.000004          
   18  3 12  58189 0.01137 .00009 0.36401 .00009  0.155694 0.000003          
   18  3 13  58190 0.01283 .00009 0.36560 .00009  0.154949 0.000065          
   18  3 14  58191 0.01385 .00009 0.36737 .00009  0.154118 0.000065          
   18  3 15  58192 0.01450 .00009 0.36927 .00009  0.153196 0.000055          

Looks to me about a kinda sort maybe 1 micro second per day shift.


RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588

	    Veritas liberabit vos. -- Quid est veritas?
    "If you can’t measure it, you can’t improve it." - Lord Kelvin
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