TeachMeFinance.com - explain Nautical Twilight
Nautical Twilight The term 'Nautical Twilight' as it applies to the area of the weather can be defined as ' The time after civil twilight, when the brighter stars used for celestial navigation have appeared and the horizon may still be seen. It ends when the center of the sun is 12 degrees below the horizon, and it is too difficult to perceive the horizon, preventing accurate sighting of stars'.
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