Domanda 417, General Navigation - ATPL - Airline Transport Pilot license

Compensate for the irregularities of the speed of rotation of the Earth around it's axis.
Save energy as the problem of adjusting our watches entering every leap year is eliminated.
Introduced a constant measurement of time, independent of the daily variations in the movement of the Sun as observed from the Earth.
Have one fixed time to be used within the border of a country.