Electromechanical circuits using relays are mostly a lost art these days, but sometimes you get people like [Aart] who can’t resist to turn a stack of clackity-clack relays into a functional design, like in this case a clock (article in Dutch, Google Translate).
This is a companion discussion topic for the original entry at https://hackaday.com/2024/02/13/a-clock-made-out-of-electromechanical-relays/