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Crepusculul civil

Dimineața, crepusculul civil apare atunci când centrul geometric al Soarelui este la 6 grade sub linia orizontului și durează până la răsăritul soarelui. Seara – amurgul începe la apusul soarelui și se termină când centrul geometric al Soarelui este la 6 grade sub linia orizontului. În timpul crepuscului civil, pot fi văzute numai cele mai stralucitoare stele, precum și obiectele terestre și de la orizont, de aceea, de obicei, nu este nevoie de iluminat artificial.

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