the sun reaches its highest point in the sky: 11:55 A.M. Sunset: 4:54 P.M. Civil Twilight Ends the sun’s center is 6° below the horizon: 5:20 P.M. Nautical Twilight Ends the sun’s center is 12° below the horizon: 5:51 P.M. Astronomical Twilight Ends the sun’s center is 18° below the horizon: 6:22 P.M. More @Wikipedia
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