About clocks.fyi

clocks.fyi is an A to Z of clocks: one clear, well-sourced article for each letter, from astronomical clocks to Bern's Zytglogge.

Every date, name and number comes from museums, observatories, universities and other reliable sources, listed at the bottom of each article. If you spot a mistake, we want to fix it.

clocks.fyi is made by David Ray, who also runs OnlineClock.app, a free big-screen clock with timers, alarms, world time and more.