Twilight
type: Concept
contributor: AAS Frey.Katie
broader: Sky brightness
definition: The diffused light from the sky when the Sun is below the horizon, either from daybreak to sunrise or, more commonly, from sunset to nightfall. There are three types of twilight: astronomical twilight, civil twilight, and nautical twilight. They are divided on the basis of the solar depression angle.
modified: 2020-11-19T16:45:23.509Z
modified: 2020-11-19T16:45:13.874Z

Sky brightness
type: Concept
narrower: Twilight