Before sunrise and again after sunset there are intervals of time, twilight, during which there is natural light provided by the upper atmosphere, which does receive direct sunlight and reflects part of it toward the Earth's surface Some outdoor activities may be conducted without artificial illumination during these intervals, and it is useful to have some means to set limits beyond which a certain activity should be assisted by artificial lighting The major determinants of the amount of natural light during twilight are the state of the atmosphere generally and local weather conditions in particular Atmospheric conditions are best determined at the actual time and place of events Nevertheless, it is possible to establish useful, though necessarily approximate, limits applicable to large classes of activities by considering only the position of the Sun below the local horizon Reasonable and convenient definitions have evolved
the diffused light from the sky when the sun is below the horizon but its rays are refracted by the atmosphere of the earth a condition of decline following successes; "in the twilight of the empire"
The twilight of a particular period of time is the final stages of it, when the most important events have already happened. Now both men are in the twilight of their careers
This is a state that most magi ultimately succumb to A magus may have several Temporary Twilight experiences, but typically they ultimately enter Final Twilight Magi who have entered Final Twilight can never be contacted, unlike those who are merely dead
{i} soft light from the sky between sunset and full night or just before sunrise; time of day characterized by faint sunlight; period of decline; faint light; vagueness
The periods of incomplete darkness following sunset (evening twilight) or preceding sunrise (morning twilight)
The soft, diffused light from the sky when the sun is below the horizon Light source used in limb sensing
lighted by or as if by twilight; "The dusky night rides down the sky/And ushers in the morn"-Henry Fielding; "the twilight glow of the sky"; "a boat on a twilit river"
Twilight is the time just before night when the daylight has almost gone but when it is not completely dark. = dusk
is light from the sky which we receive each day just before the Sun rises or just after it sets It is caused by the Sun's rays being reflected down from upper levels of the atmosphere
The light perceived before the rising, and after the setting, of the sun, or when the sun is less than 18° below the horizon, occasioned by the illumination of the earth's atmosphere by the direct rays of the sun and their reflection on the earth
The time before sunrise and after sunset when the Sun is not in the sky but there is still some useable light Defined by the Sun being less than 6° below the horizon