Never Needs Setting: The Quest for Self-Correcting Clocks
July 30, 2026
Sparked by a Hacker News favorite on building a clock that sets itself, this puzzle celebrates the science of precise timekeeping—atomic references, radio sync, and the humans and hardware that keep the world on schedule.
Type letters to fill the puzzle. Use arrow keys to move, Space to switch between across and down, Tab for the next clue, and Backspace to erase.