DCF77

DCF77 is a longwave radio signal broadcast from Germany that provides highly accurate time information. It transmits a pulse every second, along with encoded data such as the date, time, and daylight saving adjustments. Clocks and devices equipped with a DCF77 receiver can synchronize automatically by listening to this signal, ensuring precise timekeeping without relying on internet connections or manual adjustments. The system leverages the stability of radio signals and sophisticated encoding to deliver reliable, real-time time updates across a broad area.