[time-nuts] Win XP and NIST time

Hal Murray hmurray at megapathdsl.net
Tue Mar 26 17:04:53 EDT 2013

> within network latency of around a second or so

A second is a long time/distance for a packet.

The measured round trip time from California to Maine is under 100 ms.

Sanity check: The US is 3000 miles east-west.  A mile is 5000 feet.  The 
speed of light is 1 ft/ns in vacuum.  So that's ballpark of 15ms one way, 30 
ms round trip.

Fiber is slower than vacuum and fibers don't take the direct path.  A factor 
of 3 seems reasonable.

These are my opinions.  I hate spam.

More information about the time-nuts mailing list