Question

to calculate the difference between the local times of any two places on the earth
(1)(the noon time at both the places should be known)
(2)(the difference in degrees of their longitudes should be known)
(3)(the difference in standard times of both the places should be known)
(4)(changes need to be made according to international date line
​

Answer 1

Answer:

3) the difference in standard times of both the places should be known)