Vols. for 1951- issued by the Nautical Almanac Office, United States Naval Observatory (<1981-2009> prepared jointly with Her Majesty's Nautical Alman...
Vols. for 1951- issued by the Nautical Almanac Office, United States Naval Observatory (<1981-2009> prepared jointly with Her Majesty's Nautical Almanac Office, Royal Greenwich Observatory; <2010-> prepared jointly with Her Majesty's Nautical Almanac Office; United Kingdom, Hydrographic Office)