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If a place is located at 120°W, what is its time difference from GMT?

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Question: If a place is located at 120°W, what is its time difference from GMT?

Options:

  1. -8 hours
  2. -7 hours
  3. -6 hours
  4. -5 hours

Correct Answer: -8 hours

Solution: 

120°W is 120/15 = 8 hours behind GMT, hence -8 hours.

If a place is located at 120°W, what is its time difference from GMT?

Practice Questions

Q1
If a place is located at 120°W, what is its time difference from GMT?
  1. -8 hours
  2. -7 hours
  3. -6 hours
  4. -5 hours

Questions & Step-by-Step Solutions

If a place is located at 120°W, what is its time difference from GMT?
  • Step 1: Understand that the Earth is divided into 360 degrees of longitude.
  • Step 2: Know that each 15 degrees of longitude corresponds to a 1-hour difference in time.
  • Step 3: Identify that 120°W means the location is west of the Prime Meridian (0° longitude).
  • Step 4: Calculate the time difference by dividing the degrees (120) by 15: 120 ÷ 15 = 8.
  • Step 5: Since the location is west of GMT, it is 8 hours behind GMT.
  • Time Zones – Understanding how longitudinal degrees correspond to time differences from GMT, where each 15° of longitude represents one hour.
  • Longitude and Time Calculation – Calculating time differences based on the Earth's rotation and the division of the globe into time zones.
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