Astronomy Day is a world-wide event observed each spring and fall.  Local astronomical societies, planetariums, museums, and observatories will be sponsoring public viewing sessions, presentations, workshops, and other activities to increase public awareness about astronomy and our wonderful universe. Astronomy Day next fall will be October 5, 2019.

https://www.astroleague.org/al/astroday/astrodayform.html

Turn Farm Observatory

Analemma Society

NOVAC - Northern Virginia Astronomy Club