The National Day is each national important holiday, but the name has differently. Many countries are called "the National Day" or "the National Festival", but also has some countries to call "the independent date" or "the independent festival", also some calling "republican date", "republic date", "revolutionary date", "liberation date", "national revival festival", "constitution date" and so on, but also has directly to the country's name adds on "the date", like "the Australian date", "the Pakistani date", some take king's birthday or ascends the base date as the National Day, in case king changes, National Day specific date also along with it replacement.