History Events on August 20
Events History Events on August 20 By Con Ylarde Bote 20 Aug 289 Views History Events on August 20 Battle of Acheloos: Tsar Simeon I of Bulgaria decisively defeats a Byzantine army. #Battle_of_Achelous_(917) In 917 In Edmond, Oklahoma, U.S. Postal employee Patrick Sherrill guns down 14 of his co-workers and then commits suicide. #Edmond,_Oklahoma In 1986 Pope Clement ...