Question

state reason for selecting 82 degree 30 East for determining Indian Standard Time

Answer 1

From Gujarat to Arunachal Pradesh there is a time lag of two hours. Hence, time along the Standard Meridian of India (82° 30' E) passing through Mirzapur (in Uttar Pradesh) is taken as the standard time for the whole country. Otherwise different regions of India would have different times which would create problems; so, to have one common standard times for the whole country has been selected and called Indian Standard Time (IST).


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Answer 2

It has been taken as IST because it almose pass from the middle of India