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Why does India's longitudinal extent create an approximate two-hour difference in local time?

Answer and explanation

Correct answer: Difference of about 30 longitudes changes local time

Local time varies with longitude because Earth rotates from west to east and different meridians face the Sun at different moments. Earth turns through 360° in about 24 hours, so 15° of longitude corresponds to approximately one hour, or about four minutes per degree. India extends roughly from 68°E to 97°E, a difference of about 29°, which is close to two hours. Thus option A is correct. Latitude influences climate and the seasonal length of day, but it does not create the east-west clock-time difference. Coastline length and total area also do not determine local time. The calculation linking 29° with roughly two hours is the decisive reasoning.

Related tags

India-LongitudeLocal-TimeEarth-RotationTime-ZonesSize-And-ExtentSize And ExtentIndia LocationGeography

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