For example: On , at 14:00 GMT, you would look up the Sun’s GHA and Dec, then interpolate for the 22 minutes and 45 seconds of your actual sight time.
The is a comprehensive record of astronomical data used for marine celestial navigation. Published jointly by the U.S. Naval Observatory (USNO) and Her Majesty’s Nautical Almanac Office (HMNAO) , it provides the precise positions of celestial bodies—including the Sun, Moon, planets, and 57 selected navigational stars. Key Contents & Features nautical almanac 1988 pdf
The is a foundational pillar of maritime history, serving as the essential "data bridge" between the stars and the navigator's chart. While contemporary sailors rely on GPS, the 1988 edition—and its availability as a digital PDF—represents a critical era in the transition from traditional celestial methods to the digital age. The Purpose of the Nautical Almanac For example: On , at 14:00 GMT, you
Brown's Nautical Almanac Dail Tide Tables for 1988 - Internet Archive The Purpose of the Nautical Almanac Brown's Nautical