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Astronomy Day is a world-wide event observed each spring and fall around the time of first-quarter moon.
Local astronomical societies, planetariums, museums, and observatories sponsor public viewing sessions, presentations, workshops, and other activities to increase public awareness about astronomy and our universe.
Key Links
Astronomical League
Latest Astronomy Day Information
Astronomy Day Fact Sheet
Astronomy Day Co sponsors
Free Astronomy Day Handbook
Elsewhere
earthsky.org
Planeta.com