Leap seconds correct for the difference between the time as measured by atomic clocks and the time determined by solar observations.
Turns out the rotation speed of Earth varies. Things like tides, earthquakes, and climate change can affect it. There is no formula for that, the only thing you can do is measure and issue a leap second when required.
Turns out the rotation speed of Earth varies. Things like tides, earthquakes, and climate change can affect it. There is no formula for that, the only thing you can do is measure and issue a leap second when required.