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| 1. |
Why 82°30\'E has been selected as the standard meridian of India |
| Answer» The earth rotates on its axis in 24 hours.In this time it covers 360°.Each degree of longitude covers 4 minutes.The central Meridian 82°30’ E. When multiplied by 4 minutes it comes to 330 minutes or 5 hours and 30 minutes.So IST= GMT+51/2 hours. Greenwich Mean Time refers to 0° longitudes. | |