4 ms·
If you live in Europe and have a Citizen or Casio watch, it is likely that your watch checks the signal from DCF77 every night to sync up with the atomic clock.
by SaintGhurka 5y ago
If you live in Europe and have a Citizen or Casio watch, it is likely that your watch checks the signal from DCF77 every night to sync up with the atomic clock.
- vzaliva 5y agoYou are right! Here is a manual for one of Citizen watches explicitly mentioning DCF77 (with 900Km radius range): https://www.citizenwatch-global.com/support/pdf/a414/e.pdf https://www.citizenwatch-global.com/support/pdf/a414/e.pdf
- ggm 5y agoAnd if you live outside reception distance of JJY or WWVB or DCF77 there's a raspberry pi local transmitter model and it runs off ntp. Using it to sync my citizen watch in Australia. https://github.com/hzeller/txtempus https://github.com/hzeller/txtempus