end evening civil twilight

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 begin morning civil twilight. Also called EECT.

Military dictionary. 2000.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • 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

  • EECT — end evening civil twilight …   Military dictionary

  • The Twilight Samurai — is a 2002 Japanese film directed by Yoji Yamada. Set in mid 19th century Japan, a few years before the Meiji Restoration, it follows the life of Seibei Iguchi, a low ranking samurai employed as a bureaucrat. Poor, but not destitute, he still… …   Wikipedia

  • Dusk — Nightfall redirects here. For other uses, see Nightfall (disambiguation). For other uses, see Dusk (disambiguation). Not to be confused with sunset. Dusk is the end of evening twilight Dusk is the beginning of darkness in the evening, and occurs… …   Wikipedia

  • Day — For other uses, see Day (disambiguation). Water, Rabbit, and Deer: three of the 20 day symbols in the Aztec calendar, from the Aztec calendar stone. A day is a unit of time, commonly defined as an interval equal to 24 hours …   Wikipedia

  • Hebrew calendar — The Hebrew calendar (הלוח העברי ha luach ha ivri), or Jewish calendar, is a lunisolar calendar used today predominantly for Jewish religious observances. It determines the dates for Jewish holidays and the appropriate public reading of Torah… …   Wikipedia

  • Abkürzungen/Luftfahrt/E–K — Dies ist der dritte Teil der Liste Abkürzungen/Luftfahrt. Liste der Abkürzungen Teil 1 A A Teil 2 B–D B; C; D Teil 3 E K E …   Deutsch Wikipedia

  • Anexo:Abreviaturas aeronáuticas y aeroespaciales — Un glosario de abreviaturas usadas en relación a la aeronáutica y la astronáutica, en orden alfabético. Contenido A B C D E F G H I J K L M N Ñ O P Q R S T U V W X Y Z A …   Wikipedia Español

  • Midnight — For other uses, see Midnight (disambiguation). Midnight is the transition time period from one day to the next: the moment when the date changes. In the Roman time system, midnight was halfway between sunset and sunrise, varying according to the… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”