Question

why there is time lag of 2hrs from Gujrat to Arunachal pradesh​

Answer 1

There is time lag of 2 hrs from gujarat to Arunachal pradesh because the standard meridian of time passing through mirzapur in UP is taken as the standard meridian of india .

Answer 2

There is a gap between Gujarat and Arunachal Pradesh of 2 hrs because every degree you move forward 4 minutes move ahead. From the longitudinal extent of India it is observed that the longitudinal expense is about 30 degree from west to east. so 30 * 4 = 120 mins i.e. 2 hrs