Civil Twilight
From FIS Freestyle wiki
The time between the moment of Sunset, when the sun's apparent upper edge is just at the horizon, until the center of the sun is 6° directly below the horizon.
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The time between the moment of Sunset, when the sun's apparent upper edge is just at the horizon, until the center of the sun is 6° directly below the horizon.
Return to Working with Snow, Freestyle Skiing