Question

If it is 8PM on 12th May at Prime Meridian, write the dates and time at A and B in the table


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Answer 1

Answer:

Since the earth makes one complete revolution of 360° in 24 hours, that means it passes through 15° in one hour, that also means 1° in 4 minutes.

As you must know Earth rotates from west to east, so every 15° we go eastwards local time is advanced by 1 hour.

So, we can conclude that places east of Greenwich gain time as they see sun earlier, whereas places west of Greenwich see the sun later and lose time.  

  So, if we know GMT, to find local time, we merely have to add or subtract the difference in the number of hours from given longitude.  

50° towards east. East means advanced time.  

So, it would be  3h 20min. ahead

=> 12 + 3h 20min = 03.20 pm