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Definition of Astronomical twilight
1. Noun. The period in which the sun is between 12° - 18° below the horizon in the morning and evening. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Astronomical Twilight
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1. Noun. The period in which the sun is between 12° - 18° below the horizon in the morning and evening. ¹
¹ Source: wiktionary.com