National day Day may be celebrated any day between 15 April and 15 May. Another example is Thailand which celebrates the birthday of the king on 28 July. This date will change on the accession of the heir to the throne. Most national days can be categorized in two large blocks: Denmark and the United Kingdom are among the few countries that do not have designated national days (though Constitution Day has many of the same features of a national day in Denmark's case). Importance attached to the national day as well as the degree to which it is celebrated vary greatly
National Doughnut Day to trick the North Vietnamese into giving out donuts in honor of the occasion. National Doughnut Day National Doughnut Day, or National Donut Day — celebrated in the United States, is on the first Friday of June of each year, succeeding the Doughnut event created by The Salvation Army in Chicago in 1938 to honor those of their members who served doughnuts to soldiers during World War I. The holiday celebrates the doughnut. Many American doughnut stores offer free doughnuts on National Doughnut Day. National Doughnut Day started in 1938 as a fund raiser for Chicago's The Salvation Army. Their