Dictionary

civil twilight en · NOUN

Meanings

1. (countable, uncountable) The period in which the sun is less than six degrees below the horizon in the morning and evening.
   • Only the brightest stars are visible during civil twilight. 2011, Thomas Hockey, How We See the Sky, A Naked-Eye Tour of Day and Night, page 74:
   • The shortest civil twilights take place on the 29th of September and the 15th of March, the longest on the 21st of June; the shortest astronomical twilights fall upon the 7th of October and the 6th of March, the longest on the 21st of June 1873, Camille Flammarion, James Glaisher, The Atmosphere, page 116:
   • Civil twilight, which begins or ends when the Sun's centre is 6° below the horizon. 1990, J. Whitaker & Sons (contributor), Almanack for the Year of Our Lord 1990, page 65:

Forms

Translations (7)

ko 시민박명 (period in which the sun is less than six degrees below the horizon) · is almannarökkur (period in which the sun is less than six degrees below the horizon) · de bürgerliche Dämmerung (period in which the sun is less than six degrees below the horizon) · ja 市民薄明 (period in which the sun is less than six degrees below the horizon) · ru гражданские сумерки (period in which the sun is less than six degrees below the horizon) · nl burgerlijke schemering (period in which the sun is less than six degrees below the horizon) · fi porvarillinen hämärä (period in which the sun is less than six degrees below the horizon)