said from the date meaning that, the world including our country, approximately some 30 countries take founds a nation japan as a national day; some are take the constitution promulgation date as the national days, like federal republic of germany; some take revolutionizes the revolt date as the national day, like france; some take the head of state birthday as the national day, like countries and so on japan, thailand, holland, denmark, england. interesting is, these countries along with king, the emperor of japan or queen's replacement change the national day the date.
general country only then a national day, but, nepalese, sweden, ugandan, republic of guinea denmark has two national days actually. in nepal, one is “the national democratic date” (on february 18), one is king's birthday; in sweden, one is “the national flag date” (on june 6), one is king's birthday; in cuba, one is “the liberation date” (on january 1), one is “the national revolt date” (on july 26); in uganda, one is “the independent date” (on october 9), one is “the second republican date” (on january 25); in the republic of guinea, one is “the announcement republican date” (on october 2), one is “the people defeats the aggression commemoration day” (on november 22): in denmark, one is “the constitution date” (on june 5), another is queen the birthday.