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 aa.usno.navy.mil

Astro - Navigation

GPS, navigation, celestial navigation

Astronavigation

Online tutorial, books, cardboard Sextant Kit

Astrosail

Navigation programs, seminars, tutorials, etc.

Volkers Crashkurs

Online crash course for celestial navigation

Wikipedia Astronomische Navigation

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).