Question

How is the standard time of country determined

Answer 1

Standard time of the place is determined by the distance of meridian of a place from the prime meridian. It is actually the official local time that is followed throughout the country. For a country, the standard time remains the same irrespective of its longitudinal differences and is even regarded as the time zones.

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Answer 2

Answer:

82 1/2 degree E .longitude is the central meridian of our country

IST is based on this longitude