Correct Answer:
Option C - Indian standard Time (IST) is calculated on the basis of 82.5⁰ East longitude from a clock tower in Mirzapur, Uttar Pradesh. The Indian standard time is 5 hours 30 minutes ahead of Greenwich Mean Time (GMT). The standard meridian of India passes through Uttar Pradesh, Madhya Pradesh, Chhattisgarh, Odisha and Andhra Pradesh.
C. Indian standard Time (IST) is calculated on the basis of 82.5⁰ East longitude from a clock tower in Mirzapur, Uttar Pradesh. The Indian standard time is 5 hours 30 minutes ahead of Greenwich Mean Time (GMT). The standard meridian of India passes through Uttar Pradesh, Madhya Pradesh, Chhattisgarh, Odisha and Andhra Pradesh.