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Produced jointly by Her Majesty's Nautical Almanac Office, Royal Greenwich Observatory and the United States Naval Observatory. Printed separately in the United Kingdom and in the United States. Presents data for use in astronomical navigation at sea. Includes Jupiter, Saturn, selected stars, our Sun, our Moon, twilight, Sunrise, Sunset, Moonrise, and Moonset. Includes "Index to Selected Stars, 2005" and "Altitude correction tables for Sun, stars, planets" on a separate sheet.