Question

Explain why a place A, to the east of placeB, is ahead in time of the place B.

Answer 1

India spans longitudes of 68° at the western end and 98° at the eastern boundary and as there is a difference of one hour for every 15° of longitude, the two extremes differ by two hours. Thus, when the sun sets at 4 p.m. in Kohima, it sets at 6 p.m. in Porbunder. IST was fixed in 1906 midway at 82.5°, or 5/ hours ahead of Greenwich Mean Time (GMT). Periodically, there are demands from the Northeast region for a separate time zone so that the clocks there may be advanced by an hour.

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