Dunkin’ Donuts Celebrating “National Donut Day” June 1stDunkin’ Donuts Celebrating “National Donut Day” June 1stUtica, NY (WIBX) - Dunkin' Donuts is celebrating National Donut Day in a big way, by offering every customer a free donut with the purchase of any beverage.Gino GeruntinoGino Geruntino