why is it 5:30 pm in indiaand 12:00 noon in london?

Dear Student,

a. If it is 12 noon in London, then the time in India  would be 5.30 pm.
b. This is because India has chosen 82 30' as standard meridian and has taken its local time as the standard time of the country, which is located in the east of Prime Meridian.
c. India being located in the east of London, experiences sunrise earlier as compared with regions lying on the west.
d. London follows Greenwich Mean time, and all the places lying on the east of this time zone experiences sunrise earlier.
e. That is India's standard time will be  ahead of London's.
f. This can be calculated by  :
Around the earth there are 360 longitudes. Each longitude has 4 minutes time difference. 

g. This longitude needs to be multiplied by 4 to get GMT difference.
h.  As in case of India= 82.5 x 4 minutes= 330 minutes or 5 hours 30 minutes.

Regards



 

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In London the time of Greenwich mean time (GMT) is followed and in India we follow Indian standard time (IST) located at 82030' East of the Prime meridian.Therefore India is 5 hours 30 minutes ahead of London. 2.This can be calculated with the help of following concept : Earth takes 4 minutes to cover 1 degree longitude. Hence to cover 82030' or 82.50,Earth will take 82.5 ×4 =330 minutes or 5 hours 30 minutes. 3.Thus If it is 12:00 noon in London, in India it will be 5:30 p.m.
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 as in london GMT is followed means greenwich mean time
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because oft rotation of the it cause 5:30 pm in indiaand and 12:00 noon in london
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