Nautical almanac

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A Greenwich nautical almanac he has, and so being sure of the information when he wants it, the man in the street does not know a star in the sky.
The technical ability to cast nautical almanacs might be seen as a crucial military and commercial advantage, jealously guarded by Britain or France.
(3.) Interestingly, the current Nautical Almanac (HM Nautical Office), demands the use of TeX for layout (<>, accessed 31 July 2006).