Multiple choice

How many minutes for each degree of longitude does the local time of any place vary from the Greenwich time?

  1. Two minutes

  2. Four minutes

  3. Six minutes

  4. Eight minutes

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Earth rotates 360 degrees in 24 hours. Therefore, 1 degree of longitude corresponds to 24 hours / 360 degrees = 1440 minutes / 360 degrees = 4 minutes per degree.