[1MachineElf]

I inherited one of these Casio Waveceptor watches from my father.

It routinely will set itself to a totally random time far into the past/future. I've wondered if maybe contemporary wireless devices interfere with the time sync radio. Another possible factor is the watch itself is ~20 years old.

[creeble]

It's not totally uncommon. I have a Waveceptor and several other clocks that use WWVB.

One works perfectly, most of the others are usually good, one gets off a couple of times a year (so therefore useless), and my Waveceptor has gone nuts maybe a couple of times.

It seems to be all about signal strength (and a little bit about battery strength).

I see at least one of those watches has GPS reception.

[tomduncalf]

Maybe Casio are using a Windows server heh (https://news.ycombinator.com/item?id=37151220)

[ilyt]

I also remember their NTP server being near-continously unreliable and having to change the ntp sync server on every install. I wonder if that's still an issue

[ricc]

Maybe it just needs a battery replacement?

[gxqoz]

I've used a series of them for over 20 years and never had this issue.