Question

What is the standard meridian of India and why do we need standard meridian

Answer 1

The standard meridian is the central meridian chosen to represent the standard time for India. It is 82.3°E longitude. We need standard meridian because it avoids confusion as the sun rises or sets almost 2 hours earlier in the easternmost part than in the westernmost part.

Answer 2

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The time of a place depends on the longitude that passes through it. Therefore, the standard time for each country is usually taken as the time of the central meridian that passes through it.Thus, we need a standard meridian for the country. In India 82 ½ °E longitude determines the standard time.