Question

Why is 82°.30 is chosen as India's Standard Meridean.

Answer 1

Answer:

From Gujarat to Arunachal Pradesh there is a time lag of two hours. Hence, time along the Standard Meridian ofIndia (82° 30' E) passing through Mirzapur (in Uttar Pradesh) is taken as the standard time for the whole country.

Answer 2

Answer:

India’s Geographical extent is from 68.03 E to 97.17 E.

82.5 E (82 deg 30 min) happens to be in the middle of 68.03 E and 97.17 E (exact middle is 82.6 E).

The idea of a single time zone made more sense because the extent was not big enough to have usage of 2 time zones. Standard time zones from the prime meridian were at 15 degree intervals and going by that India would have had two time zones. (UTC + 5 & UTC +6). But this would mean the entire setup adopting to different time zones which would result in confusion. Hence, it was decided to have a centrally located uniform time across India.

However, the easternmost region do advance their clocks by one hour in order to carry out daily activities.

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