Since 1972, humanity has quietly stitched together two incompatible ways of measuring time — the metronomic certainty of atomic clocks and the wandering rhythm of Earth's rotation — by inserting occasional single seconds into the global clock. Now, international timekeeping bodies are weighing whether to abandon this delicate patchwork in favor of a leap hour: a rarer, larger correction that would trade astronomical precision for the stability that a world running on synchronized digital infrastructure increasingly demands. It is, at its heart, a question of which version of time we trust more