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  2. Sunrise equation - Wikipedia

    en.wikipedia.org/wiki/Sunrise_equation

    Sunrise, sunset, or sun position for any location – U.S. only; Sunrise, sunset and day length for any location – Worldwide; Rise/Set/Transit/Twilight Data – U.S. only; Astronomical Information Center; Converting Between Julian Dates and Gregorian Calendar Dates; Approximate Solar Coordinates; Algorithms for Computing Astronomical Phenomena

  3. Twilight - Wikipedia

    en.wikipedia.org/wiki/Twilight

    An Excel workbook with VBA functions for twilight (dawn and dusk), sunrise, solar noon, sunset, and solar position (azimuth and elevation) by Greg Pelletier, translated from NOAA's online calculator for sunrise/sunset; Time and Date to find the current state of the sun in a specified place. "Twilight" . Encyclopædia Britannica. Vol. 27 (11th ...

  4. Blue hour - Wikipedia

    en.wikipedia.org/wiki/Blue_hour

    Blue hour usually lasts about 20–96 minutes right after sunset and right before sunrise. Time of year, location, and air quality all have an influence on the exact time of blue hour. [ 7 ] For instance in Egypt (every 21st of June ), when sunset is at 7:59 PM : blue hour occurs from 7:59 PM to 9:35 PM.

  5. Dawn, Midnight and Twilight - Wikipedia

    en.wikipedia.org/wiki/Dawn,_Midnight_and_Twilight

    The princess dowses the hero with a magic water and Sunrise kills the zmii, then takes the princess to the rope to the upper world. Sunrise's brothers lift up the princess, but abandon him in the lower world. Sunrise then finds an owl menacing a nest of eagle chicks and swings the sword to shoo it away.

  6. Lighting-up time - Wikipedia

    en.wikipedia.org/wiki/Lighting-up_time

    Lighting-up time, sunrise/sunset and twilights at the National Maritime Museum, Greenwich, United Kingdom; Lighting-up time at the Royal Observatory Edinburgh; D. O'Leary, When to light up: a pocket treatise on the Lights on vehicles act, 1907 containing a full explanation of the act, with a table showing the lighting-up time Published 1908

  7. Crepuscular rays - Wikipedia

    en.wikipedia.org/wiki/Crepuscular_rays

    Crepuscular rays, sometimes colloquially referred to as god rays, are sunbeams that originate when the Sun appears to be just above or below a layer of clouds, during the twilight period. [1] Crepuscular rays are noticeable when the contrast between light and dark is most obvious. Crepuscular comes from the Latin word crepusculum, meaning ...

  8. Dusk - Wikipedia

    en.wikipedia.org/wiki/Dusk

    Civil, nautical, and astronomical twilight. [3] Dusk is the darkest part of evening twilight. 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]

  9. Twilight Time - Wikipedia

    en.wikipedia.org/wiki/Twilight_Time

    Twilight Time may refer to: Twilight, the time between dawn and sunrise or between sunset and dusk "Twilight Time" (1944 song), a popular song, best known in the 1958 version by the Platters "Twilight Time" (The Moody Blues song), 1967; Twilight Time, a 1993 album by Stratovarius, or the title song; Twilight Time, an album by André Gagnon