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Stjörnurökkur

Stjörnurökkur hefst á morgnana þegar rúmfræðileg miðja sólar er 18 gráðum fyrir neðan sjóndeildarhringinn og lýkur þegar rúmfræðileg miðja sólarinnar er 12 gráðum fyrir neðan sjóndeildarhringinn. Það hefst á kvöldin þegar rúmfræðileg miðja sólarinnar er 12 gráðum fyrir neðan sjóndeildarhringinn og lýkur þegar rúmfræðileg miðja sólarinnar er 18 gráðum fyrir neðan sjóndeildarhringinn.

Sjóndeildarhringurinn er ekki sýnilegur á þessum tíma en nokkuð bjartar stjörnur geta sést.

 

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