A nautical almanac is a publication describing the positions and movements of celestial bodies, including the sun, moon, planets, and stars. In Great Britain a nautical almanac has been published annually by the HM Nautical Almanac Office, ever since the first edition was published in 1767. The nautical almanac is usually used together with a sextant and a chronometer for celestial navigation while at sea.
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Last updated: 05-16-2005 21:13:34
