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Welcome to HM Nautical Almanac Office Publications, Services and History of HM Nautical Almanac Office Keywords: astronomy , almanac , ephemeris , ephemerides , daylight moonlight diagram www.hmnao.com/ "The Online Nautical Almanac" Electronic Charting System navigation software. Celestial and Chart Navigation. Keywords: navigator light , navigation , navigation software , gps , electronic charts www.tecepe.com.br/scripts/AlmanacPagesISAPI.isa Submit Site to the Nautical Almanac Directory |