Saturday, September 28: 
Imiloa Wayfinding & Navigation Festival. Featuring hands-on activities that include wayfinding and navigation skills, makahiki games, canoe and cultural arts exhibits, planetarium shows, speaker presentations, a featured documentary, and live music.  Imiloa Astronomy Center, 600 Imiloa Place, Hilo. 10 a.m. to 4 p.m.  Free.  For information call (808) 969-9703 or visit www.imiloahawaii.org.