June 5th, is National Doughnut Day. The first Friday of June each year and follows on the Donut Day event created by the Salvation Army in 1938 to honor the women who served donuts to soldiers during World War I.The holiday celebrates the doughnut (a.k.a "donut") — an edible, ring-shaped piece of dough which is deep-fried and sweetened. Many American doughnut stores offer free doughnuts on National Doughnut Day.
In honor of National Doughnut Day, participating Krispy Kremes are offering one free doughnut per customer, no purchase necessary.
Dunkin' Donuts also has a deal -- participating locations will give every customer a free doughnut of their choice, with the purchase of any beverage, limit one per customer.