This is a good time for photographers to capture the sky and the soft glow of the sunlight.īeyond this point, artificial light is generally needed to carry out most outdoor activities. At this moment, the Earth's atmosphere still reflects a large portion of sunlight, coloring a clear sky in different shades of orange and red. It marks the end of civil twilight, which begins at sunset. Precise dusk and sunset times for your city Civil DuskĬivil dusk is when the geometric center of the Sun's disk goes 6 degrees below the horizon.

Astronomical dusk – the geometric center of the Sun's disk is 18 degrees below the horizon.Nautical dusk – the geometric center of the Sun's disk is 12 degrees below the horizon.Civil dusk – the geometric center of the Sun's disk is 6 degrees below the horizon.There are 3 stages of dusk, each marking the end of 1 of the 3 phases of evening twilight: ©/SeanPavonePhoto Scientific DefinitionĪs 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. Business Date to Date (exclude holidays).

Meaning of dusk download free