Indian Standard Time (IST) is calculated based on 82.5°E longitude. It is 5 hours 30 minutes ahead of Greenwich Mean Time (GMT) and applies uniformly across India.
class 6 Social Science Textbook Chapter 1 question answer
class 6 Social Science Chapter 1 Locating Places on the Earth solutions
Indian Standard Time (IST) is set according to 82.5° east longitude, which runs near Allahabad in central India. This longitude was chosen as a standard reference to ensure uniform timekeeping across the country. IST is 5 hours and 30 minutes ahead of GMT, allowing for a consistent time system across India despite its wide longitudinal span from Gujarat in the west to Arunachal Pradesh in the east.
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