Celestial navigation
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Celestial navigation, also known as astronavigation, is the practice of position fixing using stars and other celestial bodies that enables a navigator to accurately determine their actual current phy
Ships Marine Chronometer giving an accuracy of less than ±5 seconds per year, French Navy issued, 1980
U.S. Navy quartermaster 3rd class, practices using a sextant as part of a navigation training aboard the amphibious assault ship USS Bonhomme Richard, 2018.
Two ship's officers "shoot" a morning sight with sextants, the Sun altitude (1963).
Lunar distance (navigation)
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In celestial navigation, lunar distance, also called a lunar, is the angular distance between the Moon and another celestial body. The lunar distances method uses this angle and a nautical almanac to
Celestial navigation
…celestial bodies without reference to the Earth's horizon, such as when the Moon and other selected bodies are used in the practice called "lunars" or the lunar distance method, used for determining precise time when time is unknown. Celestial navigation by taking sights of the Sun and the horizon whilst on the surface of the…
Full Moon 2010
Marine sandglass MMM