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The time of dusk is the moment at the very end of astronomical twilight, just before the minimum brightness of the night sky sets in, or may be thought of as the darkest part of evening twilight. [4] However, technically, the three stages of dusk are as follows: At civil dusk, the center of the Sun's disc goes 6° below the horizon in the ...
Twilight occurs according to the solar elevation angle θ s, which is the position of the geometric center of the Sun relative to the horizon. There are three established and widely accepted subcategories of twilight: civil twilight (nearest the horizon), nautical twilight, and astronomical twilight (farthest from the horizon). [2]
[2] [3] Anticrepuscular rays are most frequently visible around dawn or dusk. This is because the atmospheric light scattering that makes them visible (backscattering) is larger for low angles to the horizon than most other angles. Anticrepuscular rays are dimmer than crepuscular rays because backscattering is less than forward scattering.
Blue hour at the Old Cathedral of the Holy Name of Jesus, Bragança in Portugal. The blue hour (from French l'heure bleue; [1] [a] pronounced [lœʁ blø]) is the period of twilight (in the morning or evening, around the nautical stage) when the Sun is at a significant depth below the horizon.
On March 15, 2011, a related short story, entitled "Turned at Dark", was released. A side-story, "Saved at Sunrise", was released as an e-book on Amazon on April 2, 2013, followed by "Unbreakable" on September 30, 2014, and finally "Spellbinder" on June 30, 2015. The three short stories were eventually released as a novella on February 2, 2016 ...
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“as a father of 2, and a veteran, i was caught by surprise by the dialogue about life, meaning, and purpose, and this song playing,” another person wrote in the comments. “have not cried in ...
[1] [2] During these times, the brightness of the sky matches the brightness of streetlights, signs, car headlights and lit windows. The period of time shortly before the magic hour at sunrise, or after it at sunset, is called the "blue hour". This is when the sun is at a significant depth below the horizon, when residual, indirect sunlight ...