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India's eastern and western limits differ by about 29° of longitude. Why does this create nearly a two-hour difference in local time?

Answer and explanation

Correct answer: Each degree of longitude corresponds to about four minutes of time

Earth rotates 360° in about 24 hours, so 15° corresponds to one hour and 1° to about four minutes. A longitudinal difference of roughly 29° therefore produces a local-time difference close to 116 minutes, or nearly two hours.

Related tags

Local TimeLongitudeTime CalculationEarth RotationIndia

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