WBCS.LIVE practice question

What is the official 'Longitude' that determines the Indian Standard Time (IST)?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 82.5 degrees East
  2. 82.5 degrees West
  3. 80 degrees East
  4. 88.5 degrees East

Correct answer and explanation

Correct answer: 82.5 degrees East

Explanation: āœ… Correct Answer: A) 82.5 degrees East šŸ“š Explanation: The standard meridian for India is 82 degrees 30 minutes East (82.5Ā° E), which passes through Mirzapur in Uttar Pradesh. IST is 5 hours and 30 minutes ahead of Greenwich Mean Time (GMT). This single time zone is maintained for the entire country to ensure administrative uniformity.