Question 9
Latitude, Longitude and TimeA woman living on longitude 30°E is calling her friend at 1am .if the friend lives on longitude 30°W , what will the time be from her end?
- A.1am the same day
- B.1am the previous day
- C.9 pm the previous day
- D.5am the same day
Show the answer and explanation
Answer: C (9 pm the previous day)
Explanation
The difference is 60° of longitude; at 15° per hour that is 4 hours. West is behind, so 1 a.m. − 4 hours = 9 p.m. the previous day.