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Navigation programs, seminars, tutorials, etc.

U.S.Naval Observatory
Online Service: Sun and Moon rise and set times, Moon phases, eclipses, seasons, positions of solar system objects, and other data
Publications: astronomical and navigational almanacs, special publications, research reports
background information on common astronomical phenomena, calendars and time, and related topics
Software: computer almanac for PCs and Macs, and more

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Online crash course for celestial navigation

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Celestial navigation is a term that describes all the procedures for determining the position through the observation of heavenly bodies (sun, moon, planets or selected fixed stars).