Dusk

Dusk is the darkest stage of twilight in the evening. During early to intermediate stages of twilight, there may be enough light in the sky under clear-sky conditions to read outdoors without artificial illumination. Civil dusk occurs when the earth rotates to a point at which the center of the sun is at 6° below the local horizon. This marks the end of the evening civil twilight, the point where artificial illumination is required to read outside.

Written by

222Vivamus vel sem at sapien interdum pretium. Sed porttitor, odio in blandit ornare, arcu risus pulvinar ante, a gravida augue justo sagittis ante. Sed mattis consectetur metus quis rutrum. Phasellus ultrices nisi a orci dignissim nec rutrum turpis semper.

Comments are closed.