Each revolution of the hour, minute and second hands represents 24 hours, 60 minutes and 60 seconds respectively.
1 day = 24 hours = 1440 minutes = 86400 seconds.
The hour hand made one **** turn: 24 ÷ 24 = 1 turn;
The minute hand made one **** turn: 1440 ÷ 60 = 24 turns;
The second hand made one **** turn: 86400 ÷ 60 = 1440 turns.
Expanded: In the International System of Units (SI), the basic unit of time is the second with the symbol s. On the 2018 The 26th International Conference on Weights and Measures, held on November 16, defines the second as the duration of 9,192,631,770 cycles (Δvcs) corresponding to the duration of 9,192,631,770 cycles of radiation resulting from a jump between two hyperfine energy orders in the atomic ground state of undisturbed cesium-133. This definition refers to cesium atoms that must be stationary at absolute zero and have an environment on the ground with zero magnetic field. The second defined in such a case is equivalent to the second as defined in astronomical calendars. Other units of time commonly used in life are: milliseconds ms, minutes min, hours h, days d, months m, years y and so on. Baidu Encyclopedia - Time