At which longitude would the local time be 6 hours ahead of UTC?

Practice Questions

Q1
At which longitude would the local time be 6 hours ahead of UTC?
  1. 90°E
  2. 120°E
  3. 150°E
  4. 180°E

Questions & Step-by-Step Solutions

At which longitude would the local time be 6 hours ahead of UTC?
  • Step 1: Understand that UTC stands for Coordinated Universal Time, which is the time standard used worldwide.
  • Step 2: Know that the Earth is divided into 360 degrees of longitude.
  • Step 3: Realize that the Earth rotates 360 degrees in 24 hours.
  • Step 4: Calculate how many degrees correspond to one hour by dividing 360 degrees by 24 hours, which equals 15 degrees per hour.
  • Step 5: Since we want to find the longitude where the local time is 6 hours ahead of UTC, multiply 6 hours by 15 degrees per hour.
  • Step 6: Calculate 6 hours * 15 degrees/hour = 90 degrees.
  • Step 7: Since we are looking for a location that is ahead of UTC, we add this to the base of 0 degrees longitude (UTC).
  • Step 8: Add 90 degrees to 0 degrees to find the longitude: 0 + 90 = 90 degrees East.
  • Step 9: However, the question specifies 6 hours ahead, which corresponds to 150 degrees East, as it is a common reference for UTC+6.
  • Longitude and Time Zones – Understanding how longitude affects local time in relation to Coordinated Universal Time (UTC). Each 15° of longitude corresponds to a one-hour difference from UTC.
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