Astronomy Answers: From the Astronomical Dictionary

Astronomy Answers
From the Astronomical Dictionary


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The description of the word you requested from the astronomical dictionary is given below.

the polar day

plural: polar days

A polar day is a day during which the Sun does not get below the horizon for at least 24 hours. Similarly, a polar night is a night during which the Sun does not get above the horizon for at least 24 hours. Polar days and polar nights occur only above the polar circles, near the geographical poles.