American Ephemeris and Nautical Almanac

The American Ephemeris and Nautical Almanac is a publication that provides essential astronomical data for navigation and timekeeping. It includes precise positions of celestial bodies, like the Sun and Moon, at various times throughout the year. Navigators, scientists, and astronomers use this information to accurately determine their location on Earth using celestial navigation techniques. Essentially, it serves as a reliable reference that helps people understand the movements of celestial objects, which is crucial for both maritime navigation and scientific research.