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  2. Twilight - Wikipedia

    en.wikipedia.org/wiki/Twilight

    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 ...

  3. Rusch Botanical Gardens - Wikipedia

    en.wikipedia.org/wiki/Rusch_Botanical_Gardens

    The Rusch Botanical Gardens 2 acres (8,000 m 2) are located at 7801 Auburn Boulevard in Citrus Heights, California, United States within Rusch Park. The Rusch Home site dates back to 1858. Originally Gardens were laid out in 1916. [1] Now gardens are a State Site of Historical Interest. Gardens open daily, dawn to dusk. [2]

  4. Dusk - Wikipedia

    en.wikipedia.org/wiki/Dusk

    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 ...

  5. For artist Uta Barth, learning to photograph is a way of ...

    www.aol.com/news/artist-uta-barth-learning...

    Contemporary photographic artist Uta Barth is photographed in front of her piece, titled "…from dawn to dusk. 2022," in her studio in Mar Vista. (Jay L. Clendenin/Los Angeles Times)

  6. Wikipedia : Coloring cartographic maps

    en.wikipedia.org/wiki/Wikipedia:Coloring...

    It indicates how to give color to geographic areas (common geopolitical delimitations: nations, regions, etc.). With the following steps: Choose the colors to paint the areas. Choose for one of two possibilities: Paint the areas of a blank map. Indicate that areas are still painted (only for maps of the world).

  7. Dawn - Wikipedia

    en.wikipedia.org/wiki/Dawn

    Aurora Musis amica (Dawn is a friend to the Muse), in Epigrammata Disticha Poetarum Latinorum, Veterum et Recentum, Nobiliora (1642) by Barthold Nihus [12] The Dawn, volume 1 on Jean-Christophe written by Romain Rolland; Dawn, a novel written by Henry Rider Haggard, published in 1884

  8. Sun-synchronous orbit - Wikipedia

    en.wikipedia.org/wiki/Sun-synchronous_orbit

    An orbit will be Sun-synchronous when the precession rate ρ = ⁠ dΩ / dt ⁠ equals the mean motion of the Earth about the Sun n E, which is 360° per sidereal year (1.990 968 71 × 10 −7 rad/s), so we must set n E = ⁠ ΔΩ E / T E ⁠ = ρ = ⁠ ΔΩ / T ⁠, where T E is the Earth orbital period, while T is the period of the spacecraft ...

  9. Light level geolocator - Wikipedia

    en.wikipedia.org/wiki/Light_level_geolocator

    The traditionally used 'threshold analysis method' requires only twilight data accurately time-stamped. Typically, daylight length (the time between dawn and dusk) is used to determine latitude, while the mid-time between a dawn and dusk is used to determine longitude. In this way, two position fixes can be obtained daily.