HAPPENIN’ OTSEGO for SATURDAY, JULY 21 Deowongo Island Day SUMMER PICNIC – Noon – 3 p.m. Day of summer fun featuring food, party barge rides to Deowongo Island, live music. Bakers Beach, St. Hwy. 28, Richfield Springs. 607-547-2366 or visit www.otsegolandtrust.org/the-news/programs-a-events/420-deowongo-island-day-clia-picnic-july-21 DANCE PARTY – 6 – 10 p.m. Back to the 80’s with cover band “Flux Capacitor.” Includes snacks, beer, wine, soft drinks. Cost, $25. Proceeds to Greater Oneonta Historical Society building fund. Deer Haven Campground, 180 Deer Haven Ln., Oneonta. 607-432-0960…