AstroDay coincides with Astronomy Day, an international grass-roots movement to share the joy of astronomy with local communities. AstroDay features exhibits, demonstrations, activities, and entertainment throughout the day, giving many people the opportunity to see what amateur and professional astronomers learn, explore and love about their science.For the past 16 years this popular event has been celebrated in Hilo. However, for the first time AstroDay will be also celebrated on the west side of the Big Island, hosted at the Kona Commons Shopping Center in Kailua-Kona. AstroDay is funded and organized by the Maunakea Astronomy Outreach Committee (MKAOC.org), a consortium of Hawaii observatories, education, and space-related organizations.The event will be held between 11am - 4pm, in the space vacated by the Sport Authority. Activities will include a portable planetarium, solar viewing, science demos, robotics, experiments and games.