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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. Sun path - Wikipedia

    en.wikipedia.org/wiki/Sun_path

    Sun path, sometimes also called day arc, refers to the daily (sunrise to sunset) and seasonal arc-like path that the Sun appears to follow across the sky as the Earth rotates and orbits the Sun. The Sun's path affects the length of daytime experienced and amount of daylight received along a certain latitude during a given season.

  4. Sunset and Sunrise - Wikipedia

    en.wikipedia.org/wiki/Sunset_and_Sunrise

    "Sunrise, Sunset" (What We Do in the Shadows), 2022 season 4 number 10 episode 40 of U.S. comedy horror mockumentary fantasy TV show What We Do in the Shadows"Sunrise, Sunset" (Schitt's Creek), 2020 season 6 number 10 episode 76 of TV sitcom Schitt's Creek

  5. Twilight - Wikipedia

    en.wikipedia.org/wiki/Twilight

    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.

  6. Solar zenith angle - Wikipedia

    en.wikipedia.org/wiki/Solar_zenith_angle

    The solar zenith angle is the zenith angle of the sun, i.e., the angle between the sun’s rays and the vertical direction.It is the complement to the solar altitude or solar elevation, which is the altitude angle or elevation angle between the sun’s rays and a horizontal plane.

  7. Moment (unit) - Wikipedia

    en.wikipedia.org/wiki/Moment_(unit)

    The movement of a shadow on a sundial covered 40 moments in a solar hour, a twelfth of the period between sunrise and sunset. The length of a solar hour depended on the length of the day, which, in turn, varied with the season . [ 1 ]

  8. Sunset - Wikipedia

    en.wikipedia.org/wiki/Sunset

    Calculate the sunset time, which is the solar noon time plus the sunset hour angle in degree divided by 15; Use the sunset time as input to the solar geometry routine to get the solar azimuth angle at sunset. An interesting feature in the figure on the right is apparent hemispheric symmetry in regions where daily sunrise and sunset actually occur.

  9. Sunshine duration - Wikipedia

    en.wikipedia.org/wiki/Sunshine_duration

    "Visible" sunshine, for example, occurs around sunrise and sunset, but is not strong enough to excite a standardized sensor. Measurement is performed by instruments called sunshine recorders . For the specific purpose of sunshine duration recording, Campbell–Stokes recorders are used, which use a spherical glass lens to focus the sun rays on ...