Question

Why it is 5:30 pm in india and12:00 in london

Answer 1

hi mate here is ur answer

It is because of rotation and revolution of the earth and India follows IST[indian standard time ]hence time varies from one country to other.Hence it varies.IST of  Indian standard time is with difference of 5;30 hours with the greenwhich meridian time which passes through London. hence there is difference of time between london and india.

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Answer 2

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India and the United Kingdom lie on different longitudes. Each degree of longitudes corresponds to a difference of four minutes. This is because the earth rotates 360° in 24 hours, 1° in 4 minutes. The standard meridian of India is 82° 30′ E, and that of London is 0°. This means a difference of 4 minutes x 82.5 = 330 minutes = 5.5 hours. So when it is 12 noon in London, it is 5.30 p.m. in India .