Question

If the gmt at 0°longitude is 12 noon, find the local time at station A and B

Answer 1

At station A:

The difference in longitude between 0° and station A is 60° towards east.

• Since it is 12 noon at 0°, the difference of time between A and 0° will be 60*4=240 mins or 4 hours
• As A is located to the east, it will be 4 hours ahead of Greenwich time: 12+4=16 hr or 4 pm
• Therefore time at station A will be 4 pm

At station B:

The difference in longitude between 0° and station B is 30° towards west.

• The difference of time between B and 0° will be 30*4=120 mins or 2 hours
• Since B is situated to the west of prime meridian, the local time at B will be 12-2 hours= 10 am