Dusk

From Wikipedia, the free encyclopedia

Dusk in Breaux Bridge, Louisiana, USA.
Dusk in Breaux Bridge, Louisiana, USA.
Dusk outside a plane on cruise.
Dusk outside a plane on cruise.

For information on the album by the rock band The The, see Dusk (The The album). For information on the album by the rock band Badlands, see Dusk (Badlands album).

Dusk or civil dusk is the time at which the sun is 6 degrees below the horizon in the evening. At this time objects are distinguishable but there is no longer enough light to perform any outdoor activities.

Nautical dusk is 12 degrees below the horizon in the evening. At this time, objects are no longer distinguishable, and the horizon is no longer visible to the naked eye.

Astronomical dusk is the time at which the sun is 18 degrees below the horizon in the evening. At this time the sun no longer illuminates the sky.

Dusk should not be confused with sunset, which is the moment when the trailing edge of the Sun itself sinks below the horizon.

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