: Greenwich hour angle and declination for the Sun, Moon, and navigational planets.
Compare Ho and Hc. The difference (intercept) gives you a line of position. Plot it on a chart. Repeat with two or three more celestial bodies (or the Sun over time) to fix your position.
: Greenwich hour angle and declination for the Sun, Moon, and navigational planets.
Compare Ho and Hc. The difference (intercept) gives you a line of position. Plot it on a chart. Repeat with two or three more celestial bodies (or the Sun over time) to fix your position. nautical almanac 2008 pdf