National Donut Day, a pseudo-holiday that honors the beloved breakfast pastry, occurs annually on the first Friday in June. It was established in 1938 by The Salvation Army as a way to honor the organization's Donut Lassies, women who traveled to France to serve donuts and other snacks to soldiers during World War I, USA TODAY reported.

National Donut Day is the first Friday in June, which falls on June 6 this year. Many doughnut spots are offering a free treat today.

National Donut Day also celebrates the Salvation Army "Lassies," or women who served doughnuts to soldiers during WWI. National Donut Day is on Friday, June 6, and several chains are offering deals for the annual unofficial food holiday.