[ntp:questions] garmin 18x and linux

Mike S mikes at flatsurface.com
Wed Sep 7 17:08:53 UTC 2011


At 12:32 PM 9/7/2011, Greg Hennessy wrote...

>I'm not even sure the USNO provided time sync to GPS is at the 2nS
>level.

USNO has this to say:
"GPS time is automatically steered to UTC(USNO) on a daily basis to 
keep system time within one microsecond of UTC(USNO), but during the 
last several years has been within a few hundred nanoseconds."

But, it's often much better. The past week, it's well under 10 ns 
difference, the majority of the time.

More info here: http://tycho.usno.navy.mil/gpstt.html 




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