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It is 12 noon at Greenwich. What will be the time at a place situated at 60° East Longitude?

It is 12 noon at Greenwich. What will be the time at a place situated at 60° East Longitude? Correct Answer 4 pm

The correct answer is 4 pm.

Key Points

Concept:

  •  As we know that Greenwich Meridian Time (GMT) is located at 0o longitude.
    • When we move towards the east of GMT, it takes 4 minutes to cross each degree of longitude.
      • i.e: Time taken to cross 1o East longitude = + 4 minutes. (1o West longitude = - 4 minutes)
    • It means when we move towards the east of GMT, time increases.
      • ​While, when we move towards the west of GMT, time decreases.

Solution:

  • As given, Time at GMT = 12 noon.
  • The place is situated at 60° East longitude.
  • From the above concept, we know that 1° East longitude = 4 minutes ahead.
  • Therefore, 60° East longitude = 4 × 60 = 240 minutes ahead.
    • Here, 240 minutes = 4 hrs.
  • Hence, Required time at given place = 12 noon + 4 hours = 4 pm.

Related Questions

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