[time-nuts] NIST time services

Poul-Henning Kamp phk at phk.freebsd.dk
Tue Mar 25 09:07:12 EDT 2014

In message <CAKyJ6kajBO=yvKG44s_sdO5OWRUZeM4TzX8aTvciRKmgcN8ftQ at mail.gmail.com>
, Paul writes:
>On Mon, Mar 24, 2014 at 4:26 AM, Poul-Henning Kamp <phk at phk.freebsd.dk>wrote:

>> And it is generally useless, because people don't calibrate it.
>How do you calibrate root distance assuming that it's "one-half the
>roundtrip root delay plus the root dispersion plus minor error
>contributions not considered here"?

You key in the number for the light-speed delay from whatever
radio-transmitter you're listening to.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

More information about the time-nuts mailing list