[LEAPSECS] LEAPSECS Digest, Vol 53, Issue 13

[Steve Allen]

On Wed 2011-04-13T14:49:09 -0700, Tom Van Baak hath writ:

> On the other hand, most radio controlled watches (e.g., WWVB

> here in the USA) make a cute jump in time every night, and after

> a leap second, presumably even more so. For details see:

> http://www.leapsecond.com/pages/Junghans/


Most of the "atomic" radio-controlled clocks in the US do exactly the
same sort of jump every night when the ionosphere lets the signal from
WWVB come through clearly.

And in Japan, since the main transmitter for JJY is within the
Fukushima evacuation zone, such watches have presumably been
freerunning and accumulating errors without resets ever since the
earthquake.

--
Steve Allen                 <sla at ucolick.org>                WGS-84 (GPS)
UCO/Lick Observatory--ISB   Natural Sciences II, Room 165    Lat  +36.99855
1156 High Street            Voice: +1 831 459 3046           Lng -122.06015
Santa Cruz, CA 95064        http://www.ucolick.org/~sla/     Hgt +250 m