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 Grandparents Day and Grandpa" by Johnny Prill would be their official song of the U.S. National Grandparents Day holiday. The National Grandparents' Day Council presented Prill with an award in recognition of his composition: "A Song for Grandma and Grandpa". National Grandparents Day National Grandparents Day is a secular holiday celebrated in various countries, with official recognition in some, and occurring on various days of the year, either as one holiday or sometimes as a separate Grandmothers' Day and Grandfathers' Day (for the first time Grandma's Day was celebrated in Poland in 1965,"see below for dates by country"). In the United States,