If it is 12:00 noon at the Prime Meridian (0° longitude), what time is it at 120

₹0.0

Question: If it is 12:00 noon at the Prime Meridian (0° longitude), what time is it at 120°E longitude? (2020)

Options:

Correct Answer: 8:00 PM

Exam Year: 2020

Solution:

At 120°E, the time is 120° / 15° = 8 hours ahead of GMT. Therefore, it is 12:00 noon + 8 hours = 8:00 PM.

If it is 12:00 noon at the Prime Meridian (0° longitude), what time is it at 120°E longitude? (2020)

If it is 12:00 noon at the Prime Meridian (0° longitude), what time is it at 120°E longitude? (2020)

Step 1: Understand that the Prime Meridian (0° longitude) is the reference point for time, known as GMT (Greenwich Mean Time).
Step 2: Know that the Earth is divided into 24 time zones, each 15 degrees apart in longitude.
Step 3: Calculate how many time zones 120°E is from the Prime Meridian by dividing 120° by 15°.
Step 4: Perform the calculation: 120° / 15° = 8. This means 120°E is 8 time zones ahead of GMT.
Step 5: Since it is 12:00 noon at the Prime Meridian, add the 8 hours to this time.
Step 6: Calculate 12:00 noon + 8 hours = 8:00 PM.

Time Zones – Understanding how time zones are calculated based on longitudinal degrees, where each 15° of longitude corresponds to one hour of time difference from GMT.
GMT (Greenwich Mean Time) – Recognizing GMT as the reference time zone from which other time zones are calculated.