Mengenlehreuhr – the Berlin Clock in SVG

Just published Mengenlehreuhr – a browser-based replica of the famous Berlin Set Theory Clock (Mengenlehreuhr), standing at the Europa-Center since 1975.

The original was designed by Dieter Binninger and is the world’s first public clock to display time using set theory principles. Five rows of colored lamps encode hours, minutes, and seconds.

The implementation is a single self-contained HTML file using pure SVG for rendering. CSS glow effects give the lamps an authentic neon look. It updates every second and works as a Progressive Web App – installable and offline-capable.

Try it out: Live Demo

Source code on GitHub.