- A period before sunrise or after sunset, commencing when the sun’s center is between 0° and 6° below the horizon. This corresponds to a degree of illumination at which everyday operations begin or cease to be possible without artificial light.
Aviation dictionary. 2014.
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Civil twilight — can mean: The brightest phase of twilight. Civil Twilight (band), three piece rock music band who originated in Cape Town, South Africa before moving to the USA. This disambiguation page lists articles associated with the same title. If an … Wikipedia
civil twilight — noun : the period after sunset or before sunrise ending or beginning when the sun is about 6 degrees below the horizon and during which on clear days there is enough light for ordinary outdoor occupations * * * civil twilight noun (astronomy) The … Useful english dictionary
civil twilight — pilietinė prieblanda statusas T sritis Gynyba atitikmenys: angl. civil twilight pranc. crépuscule civil ryšiai: platesnis terminas – prieblanda … NATO terminų aiškinamasis žodynas
civil twilight — noun The period in which the sun is less than 6° below the horizon in the morning and evening … Wiktionary
Civil Twilight (band) — For the type of twilight between sunset and dusk, see Twilight. Civil Twilight Civil Twilight performing at Summerfest 2010 Background information Origin … Wikipedia
end evening civil twilight — The time period when the sun has dropped 6 degrees beneath the western horizon; it is the instant at which there is no longer sufficient light to see objects with the unaided eye. Light intensification devices are recommended from this time until … Military dictionary
begin morning civil twilight — The period of time at which the sun is halfway between beginning morning and nautical twilight and sunrise, when there is enough light to see objects clearly with the unaided eye. At this time, light intensification devices are no longer… … Military dictionary
Twilight — For other uses, see Twilight (disambiguation). Twilight at Riga Bridge … Wikipedia
twilight — The period of incomplete darkness following sunset and preceding sunrise. Twilight is designated as civil, nautical, or astronomical, as the darker limit occurs when the center of the sun is 6°, 12°, and 18°, respectively, below the celestial… … Aviation dictionary
Twilight Zone: The Movie — Original 1983 theatrical poster Directed by John Landis (prologue and segment 1) Steven Spielberg (segment 2) … Wikipedia