U.S. Naval Obervatory Astronomical DataThis site supplies data for important astronomical events. You's find charts, maps and calendars for sunrise, sunset, moonrise, and moonset. Discover more on the phases of the moon, eclipses and transits, positions of the sun, locations of the birght starts and celestial navigation. This is a useful resource for anyone interested in following the progress of the celestial bodies through the sky.Come learn about what's in the sky!