Astronomical/electronic time switch with simple intuitive programming of 60 switching times, optionally astronomical or electronic. Astronomical time control allows automated switching with a selectable time offset to sunrise and sunset. The astro function can be blocked independently of sunrise and sunset (e.g., lighting can be switched on at 20:00 at the latest). Electronic time control enables automated switching according to a preset time with automatic summer/winter time changeover. It features manual switching anticipation for permanent off-on switching via a manual switch. Programmable without a mains connection, it allows location setting by selecting the nearest town or entering coordinates, along with other useful functions. Program security is ensured with PIN coding. Designed for 35 mm DIN rail.