2025 · Q71
Which of the following statements is/are correct?
- 1The time at 180° longitude is exactly 12 hours from the 0° longitude, irrespective of whether one travels westward or eastward from the Prime Meridian.
- 2A person moving eastward on Tuesday will count the day as Wednesday once the International Date Line is crossed. Select the answer using the code given below.
indian-world-geographygeomorphology
- A1 only
- B2 only
- CBoth 1 and 2
- DNeither 1 nor 2
Explanation
Since 180/15 = 12, the time at 180 deg longitude differs from GMT by exactly 12 hours whether one reckons eastward or westward, so statement 1 is correct. Crossing the International Date Line eastward (from the Asian to the American side), the calendar goes back a day — Tuesday becomes Monday, not Wednesday — so statement 2 is incorrect. Hence only statement 1 is correct.