Question

Why is the longitude of 82.3° E taken as the standard meridian of India?

Answer 1

because this lies in the middle of India
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https://www.nextgurukul.in/nganswers/ask-question/answer/Why-82-30-E-longitude-has-been-selected-as-...

Answer 2

Hey Mate! Here's ur answer.
82°30'E is taken as a IST bcz the longitudinal extent influence the 2hrs difference B/w Gujarat and Arunachal pradesh. In order to keep away this time variation within the country 82°30'E (Mirzapur) is taken as IST.

I Hope It Helps.....☺️