It is a direct result of the spot or the scopes at which these spots are available, the IST (INDIAN STANDARD TIME) is at 82’30 and the GMT (GREENWICH MERIDIAN TIME) is available at the 0the earth turns from one west to another which makes the daylight arrive at India quicker before GMT at London.So IST is 5 hours in front of GMT.
Final Answer: Indian Standard Time (IST) is 5 hours 30 minutes ahead of Greenwich Mean Time (GMT).