Q138
Geography (incl. West Bengal)States, Borders & Political Divisions
Indian Standard Time is calculated along a line of longitude passing through
- a.82°30' E passing through Allahabad
- b.80°30' E passing through Delhi
- c.88°30' E passing through Kolkata
- d.84°00' E passing through Nasik
Answer: (A) 82°30' E passing through Allahabad
Indian Standard Time (IST = UTC+5:30) is calculated from the meridian of 82°30' East, which passes through Mirzapur (near Allahabad/Prayagraj) in Uttar Pradesh. This location was chosen as the central reference point for India's single time zone.