Hi There have been a number of “unusual” NTP servers running over the years. The whole “how do we handle leap seconds” thing resulted in a lot of variation. Simple answer is still the same: Only connect to servers that you have checked out.
Bob > On Jul 22, 2016, at 6:23 PM, John Hawkinson <[email protected]> wrote: > > I have to wonder if it's really such a great idea to have this > as an open NTP server without huge red flags that it is not UTC. > One could imagine it leading to big problems if some people started > syncing to it without undersatnding that it was. > > Has there been thought to at least setting the reference ID to 'UT1' > instead of 'NIST' (or maybe 'NUT1' since 'NIST-UT1' is too long?). > > > With respect to interpolation and soforth, it seems like a lot of NTP > cares more about frequency than offset, and all this stepping presumably > wreaks havoc with the frequency? Maybe I'm wrong though... > > [email protected] > John Hawkinson > > Tom Van Baak <[email protected]> wrote on Fri, 22 Jul 2016 > at 15:14:26 -0700 in <60BA6696E49A4C4FA9F6B5792176F81A@pc52>: > > >>> The current algorithm on the server uses the UT1 offset from >>> Circular A with no interpolation. The value changes at 0 UTC every day. >>> I did not use any interpolation because the difference in the dUT1 >>> value from one day to the next is on the order of 1-2 ms, and I >>> considered that it was likely that the jitter and asymmetry of the >>> network connection to a typical user would limit the accuracy to a >>> larger value anyway so that interpolation would not actually improve >>> anything. However, I will certainly consider changing this. It would not >>> be a big deal to add interpolation if there were some good reason for >>> doing so. >>> >>> Best wishes, >>> >>> Judah Levine > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
