Summerfest will be holding a three-day-long Juneteenth celebration from June 18th through June 20th.The festivities begin at 6 p.m. on June 18th with R&B artist Charlie Wilson and Danny Boy kicking it off with a performance at the BMO Pavilion, as well as recipients at Northcott Neighborhood House's Juneteenth scholarship pageant.On Juneteenth, Summerfest will have a special admission promotion that will support Northcott Neighborhood House and …