Which clock to trust?

Marco Hahn (Marco_Hahn@sl.maus.de)
Thu, 17 Sep 1998 09:25:00 +0200

Kommentar zu P16770@BB in der Gruppe SeeSat-Mailingliste

RB>You can also call the modem line at N.I.S.T. (303-494-4744), which sends a
time mark to your computer screen once per second (also very handy for
automatically calibrating your computer clock).

The correct number is 303-494-4774 (thanks Rick!) and I think may be my time
signal choice of the future. First, it sets my PC clock pretty easily, and the
round-trip time of a modem signal is probably far more constant than that of a
ntp connection. Furthermore some modems do compute the round-trip delay and
thus this error can be corrected very easily.

If there is a software that automatically adjusts the PC clock and evaluates
the round-trip dealy, please let me know. Otherwise I'll write a small program
to do just that.

Hej d†, Marco