Question

How many degrees of longitude does each time zone cover?

• A. 15
• B. 30
• C. 60
• D. 180

Hint:

1 hour = 15° rotation of Earth → each time zone spans 15° longitude.

Answer 1

The Correct Option is A

The Earth rotates 360° in 24 hours, so each hour corresponds to: \[ \frac{360°}{24} = 15° \text{ of longitude} \] Hence, each standard time zone spans 15 degrees of longitude.