+A **Leap Second** is an occasional one-second adjustment added to [Coordinated Universal Time](/wiki/UTC) to keep it closely aligned with the irregular rate of [Earth's Rotation](/wiki/Earth_Rotation). These rare additions prevent precise clocks from drifting significantly out of sync with solar time.
+## See also
+- [Atomic Clock](/wiki/Atomic_Clock)
+- [Time Standard](/wiki/Time_Standard)
+- [Chronometry](/wiki/Chronometry)