Gahanna Music in the Park Posted on June 1, 2017May 4, 2017 by admin Loading Map.... Gahanna’s Friendship Park138 Oklahoma Avenue - GahannaDetails 40.0165019 -82.87724630000002 Date/Time Date(s) - 01/06/20176:30 pm - 8:00 pm Location Gahanna's Friendship Park