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Dawn is the time that marks the beginning of twilight before sunrise. It is recognized by the appearance of indirect sunlight being scattered in Earth's atmosphere, ...
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]
Twilight is the time period between dawn and sunrise, and between sunset and dusk. Morning twilight: astronomical, nautical, and civil stages at dawn. The apparent disk of the Sun is shown to scale. [1] Evening twilight: civil, nautical, and astronomical stages at dusk. The solar disk is shown to scale.
Special cases of the Sun-synchronous orbit are the noon/midnight orbit, where the local mean solar time of passage for equatorial latitudes is around noon or midnight, and the dawn/dusk orbit, where the local mean solar time of passage for equatorial latitudes is around sunrise or sunset, so that the satellite rides the terminator between day ...
The monastic rule drawn up by Benedict of Nursia (c. 480 – c. 547) distinguishes between the seven daytime canonical hours of lauds (dawn), prime (sunrise), terce (mid-morning), sext (midday), none (mid-afternoon), Vespers (sunset), compline (retiring) and the nighttime canonical hour of vigil.
Friday’s Final Four game between Iowa and UConn (which followed USC’s win over NC State) didn’t tip off until 9:32 p.m. and concluded at 11:36 p.m with a Hawkeyes win.
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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.