The 82 ×/2 °E longitude passing through Allahabad is taken as the standard meridian for India because it **** in the middle of the long east-west extent of India. For every 1° of longitude, there is a difference of 4 minutes. So there is a difference of two hours in the local time of Gujarat in the west and Arunachal Pradesh in the east. To avoid confusion and have a uniform time in the entire country, standard meridian has been formed.
