[EAS] Homeland Security Staff locked out of computers?

[Mike McCarthy]

Well...considering the Naval Observatory is the offical reference, I'm not
sure it makes a hill of beans difference as to whether WWV is active or
not for a brief period of time.

If the N-O goes off line, that's a little different and the NIST clocks at
Boulder and Hawaii need to pick up.

FWIW, there was an article in a recent IEEE Spectrum issue which dove into
the increasingly challenging task of further refining the time standard.
The current state of the art is 10 (-15--quadrillionth) with a specific
goal to reach 10 (-18 quintillionth ) by sometime next decade.

Not that a few hundred quadrillionth's of a second here or there between
friends really matters....other than the fact 1520ft. of earth passes per
second at the equator. Or about a ft. every 650uS, inch every 55uS.

MM

On Tue, February 21, 2017 5:55 pm, Phil Johnson wrote:
> The multiple Cesium clocks at WWV and WWVB at Fort Collins, Colorado, are
>  good to one part in 10 to the minus 12th.  Same with the three Cesium
> clocks at WWVH (Kauai).  Two of three clocks must agree (I saw them on
> Kauai last
> May), or the transmitters automatically shut down and generate an alarm.
>