I have an alarm clock with this system (or I think it's this, it's from Oregon Scientific) and it has this "automatic clock sync" feature.
I have it disabled. Once it was set to a random time, and I lost an important meeting because the alarm didn't ring at the correct time. The usual time doesn't deviate more than a second or so every few years, when I need to change the batteries and set it again so it's useless.
This automatic feature would be perfect if it acted as a "press this button to setup" or at startup, but the issue is that the messages are sent very sporadically so you either need to wait almost a full day for it to sync (clocks are not always listening, so it needs to coincide the "push" and the "listen") or set it manually.
> This automatic feature would be perfect if it acted as a "press this button to setup"
You press the receive button on the Casio.
> but the issue is that the messages are sent very sporadically so you either need to wait almost a full day for it to sync
The signal is constant. You probably had bad reception. In case of DCF77 it needs one minute to transmit "date + time + parity". I have seen my G-Shock syncing in under two minutes.
I have it disabled. Once it was set to a random time, and I lost an important meeting because the alarm didn't ring at the correct time. The usual time doesn't deviate more than a second or so every few years, when I need to change the batteries and set it again so it's useless.
This automatic feature would be perfect if it acted as a "press this button to setup" or at startup, but the issue is that the messages are sent very sporadically so you either need to wait almost a full day for it to sync (clocks are not always listening, so it needs to coincide the "push" and the "listen") or set it manually.