The amount of solar insolation goes on decreasing from the equator to the poles. Therefore, the equatorial regions have days and nights of almost equal duration (12 hrs) whereas polar regions may experience days and nights as long as 6 months (in either hemisphere).
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SANTOSH KUMAR
June 21, 2018The amount of solar insolation goes on decreasing from the equator to the poles. Therefore, the equatorial regions have days and nights of almost equal duration (12 hrs) whereas polar regions may experience days and nights as long as 6 months (in either hemisphere).