Question

why has it 83.30 is selected as a starting Meridian of India​

Answer 1

Answer:

the longitudinal extent of India is 30 degree

the sun rise in the east and set in the west

the difference in time my ID create confusion in air and timing and so many other thing across the two States this confusion passing through the midpoint of 68.7

West most latitude longitude and 90 7.25 East most longitude is taken as the Standard Meridian of India it is 82.30