HAPPENIN’ OTSEGO for FRIDAY, AUGUST 25 Billy Joel Tribute Concert TRIBUTE CONCERT—6-9 p.m. “Downtown Men,” a tribute to Billy Joel. $30. Includes cash bar. Foothills Performing Arts and Civic Center, 24 Market Street, Oneonta. (607) 431-2080 or visit https://www.foothillspac.org/ HAZARDOUS WASTE—8-11 a.m. Otsego County households are invited to bring paints, pesticides, solvents, cleaners, other chemicals to be safely collected and disposed of. Unadilla Town Barn, 216 County Highway 3, Unadilla. (607) 547-4225 or visit https://www.occainfo.org/calendar/event-five-tkrty BLOOD DRIVE—Noon to 5 p.m. Unadilla Fire Department,…