The name Midnight Sun is given to the sun when it’s visible above the horizon at midnight during the Arctic or Antarctic summer. From March 21 to September 23, the sun is visible 24 hours a day at the North Pole and from September 23 to March 21 at the South Pole. Moving from North to the south in the Arctic Circle and South to North in Antarctic Circle the midnight sun’s limit the number of days of continuous sunshine decreases.
Why does it occur?
The midnight sun occurs because the earth’s axis tilts toward the sun in summer and away from the sun in winter. The poles are exposed to the sun for six months each. Tilting of the earth’s axis and the revolution of the planet around the sun causes as well the seasons.
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