# Determine the local time at the point, the geographical longitude of which is 7h46 m, if the clock in Moscow (λ = 2h30 m)

Determine the local time at the point, the geographical longitude of which is 7h46 m, if the clock in Moscow (λ = 2h30 m) shows the time 18h38min. The point is located east of Moscow.
λ = 2h30m means that Moscow is at a distance from Greenwich at this time.
60 time minutes corresponds to 15 °; therefore, 2 hours corresponds to 30 ° longitude; 30 time minutes corresponds to 7.5
Thus, 2h 30m corresponds to 37.5 ° E.
λ = 7h46m means that the point is away from Greenwich at this time
60 time minutes corresponds to 15 °; therefore, 7 o’clock corresponds to 105 ° longitude;
4 time minutes corresponds to 1 °, therefore 44 time minutes corresponds to 11 °.
0.5 ° corresponds to 2 time minutes
longitude of the point 105 ° + 11 ° + 0.5 ° = 116.5 ° E.
Thus, the difference in longitudes between Moscow time and this point is 116.5 ° – 37.5 ° = 79 °
60 time minutes corresponds to 15 °; therefore, 75 ° longitude corresponds to 5 hours;
4 time minutes corresponds to 1 °; therefore 4 ° corresponds to 16 time minutes.
Consequently, the difference between Moscow and the point is the time difference 5h16m.
18h38m + 5h 16m = 23h54m – local time at this point. Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.