National Donut Day is celebrated on the first Friday in June, with this year's observance falling on June 5. The holiday originated from the Salvation Army's efforts during World War I, where volunteers, known as "donut lassies," provided donuts to soldiers on the frontlines. This tradition has evolved into a day where many donut shops across the United States offer free donuts, encouraging people to indulge in this popular treat. Donuts are enjoyed in various forms, from traditional glazed to innovative flavors like maple-bacon. The celebration highlights the cultural significance of donuts as a comforting snack that pairs well with beverages and serves as a quick treat during conversations.