I have a radio-controlled, Junghans Mega Solar Spektrum watch (018/1122.00).
I am visiting Victoria in British Columbia, Canada. On one occasion the watch failed to synchronise; on another occasion it synchronised with the US transmitter in Fort Collins, Colorado; but today, outside in the open air, it claimed to have synchronised with the EU transmitter near Frankfurt in Germany. This seems to me deeply improbable. Is it conceivable that this was the result of unusual atmospheric conditions, or was it just a bug in the software?