Question

why do the local times in India vary what has been done to ensure uniform time across the country give answer in short​

Answer 1

Local times in India vary due to the large size of India. India lies between 68.7 degrees east longitude and 97.25 degrees east longitude. To ensure uniform time across the country, India has adopted the Indian Standard time. This is the local time at the 82.5 degrees east longitude which passes through Allahabad.