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Noaptea polară civilă

Noaptea civilă polară apare în locurile unde centrul geometric al Soarelui nu se ridică mai mult de 6 grade deasupra orizontului pentru cel puțin 24 de ore (nu exista amurg civil în timpul solstițiului de iarnă). În jurul amiezii locale, numai amurgul nautic poate fi observat. Se întâlnește la latitudini situate la 6 grade nord de Cercul Arctic și la 6 grade sub Cercul Antarctic, ceea ce înseamnă că limitele sunt latitudinile de 72,56 ° N la nord și de 72,56 ° S la sud.

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