![]() ![]() The term dusk usually refers to astronomical dusk, or the darkest part of twilight before night begins. At predusk, during early to intermediate stages of twilight, enough light in the sky under clear conditions may occur to read outdoors without artificial illumination however, at the end of civil twilight, such lighting is required to read outside. Visitors hiking through the interdunal area of the Sunset Stroll Going out in to the dunes with a ranger. There are 3 stages of dusk, each marking the end of 1 of the 3 phases of evening twilight: Civil dusk the geometric center of the Sun's disk is 6 degrees. ![]() Dusk occurs at the darkest stage of twilight, or at the very end of astronomical twilight after sunset and just before nightfall. As with dawn, scientists define dusk as specific moments in time based on the solar elevation angle, which is the position of the Sun in relation to the horizon. ![]()
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