Here are some interesting facts about national donut day:
- The first donut was invented in the Netherlands in the 16th century.
- The first donut shop in the United States was opened in New York City in 1847.
- The Salvation Army started serving donuts to soldiers during World War I.
- The first National Donut Day was celebrated in 1938.
- The most popular type of donut in the United States is the glazed donut.
- The world's largest donut weighed 2,628 pounds and was made in 2016.