Question

calculate the time of durban 30degree east long,when the time is 3.00pm at newyork 75degree west long

Answer 1

Longitudinal diff =30 + 75 =105 degree
Time taken to travel 1°=4'
.
. . Time taken to travel 105 degrees = 4*105= 420mins = 7hours

Now, as durban is in the east of new york, it is ahead of New York

So time at durban = time at new york + the difference of time between them (7 hrs as found before)

3:00pm +7hrs = 10:00pm