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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.
Observers within 63°26' of the Equator can view twilight twice each day on every date between the month of the autumnal equinox and the month of vernal equinox between astronomical dawn, nautical dawn, or civil dawn, and sunrise as well as between sunset and civil dusk, nautical dusk, or astronomical dusk, i.e., from September 1 to March 31 of ...
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 ...
Matutinal animals are active only after dawn, and vespertine only before dusk. A number of factors affect the time of day an animal is active. Predators hunt when their prey is available, and prey try to avoid the times when their principal predators are at large. The temperature may be too high at midday or too low at night. [2]
The Descriptive Color Names Dictionary is a dictionary of color names used for mass-market clothing and consumer merchandise, such as those in mail order catalogs. It relates each color name to one or more color swatches in the Color Harmony Manual , a color atlas based on the Ostwald color system .
In Islam, Zodiacal Light (or "false dawn") is referred to as False Morning (Subhe-Kazeb, Persian صبح کاذب) and Astronomical dawn is called Sahar (سحر) or True Morning (Subhe-Sadeq, Persian صبح صادق), and it is the time of first prayer of the day, and the beginning of the daily fast during Ramadan.
The artist Uta Barth's expansive retrospective of photographs, on view at the Getty through late February, demands stillness, contemplation and patience.
Dawn to Dusk may refer to: Dawn to Dusk, the first disc of the album Mellon Collie and the Infinite Sadness by The Smashing Pumpkins "Dawn to Dusk", a song from the Raga soundtrack; Dawn-to-dusk transcontinental flight across the United States, an aviation record established in 1924