Astronomical Almanac

The Astronomical Almanac is a joint publication of the U.S. Nautical Almanac Office, United States Naval Observatory (USNO) in the United States, Her Majesty's Nautical Almanac Office (HMNAO) , and the United Kingdom Hydrographic Office (UKHO) . This annual publication contains precise ephemerides of the Sun, Moon, planets, and satellites; data for eclipses and other astronomical phenomena for a given year; and serves as a worldwide standard for such information. Related The Astronomical Almanacs & Phenomena collection can be found The Almanacs & Navigation Guides collection is available Other products produced by the United States Navy, Naval Observatory (USNO) can be found