==========National Day==========The National Day is a designated date on which celebrations mark the nationhood of a nation or non-sovereign country. Often the National Day will be a national holiday.The National Day is often taken as the date on which a state or territory achieved independence or the introduction of a democratic constitution. Other dates such as the country's patron saint day, or a significant historic date are sometimes used. Most countries have a single National Day per year, though a few, for example, India and Pakistan, have more than one. Besides that, each of the two special administrative regions of the People's Republic of China, namely Hong Kong and Macao, celebrate the day of the establishment of the special administrative region, as well as the National Day of the People's Republic of China.The importance attached to the National Day, and the degree to which it is celebrated, vary enormously from country to country. In France, for example, National Day is 14 July and is known as the Fête nationale (only outside France is it called Bastille Day). It is widely celebrated and the French Tricolour is much in evidence, while the President of the Republic attends a military parade on the Champs-Élysées of Paris. In the United States, the Fourth of July celebrations are widely celebrated with fireworks and barbecues. In the Republic of Ireland, St. Patrick's Day, March 17, has been the National Day and a Public Holiday for many years, and in recent years it has been observed as a full Public Holiday in Northern Ireland too. However, in the rest of the United Kingdom the constituent countries' patron saints' days are low-key affairs. In recent times campaigns have commenced to promote the National Days of England, Scotland and Wales, with St Andrew's Day being designated as an official bank holiday when the Scottish Parliament passed the St Andrew's Day Bank Holiday (Scotland) Act 2007. A national day for the United Kingdom has also been proposed in recent years.Most countries have a fixed date National Day, but some have movable dates. An example here is Jamaica, which celebrates its National Day on the first Monday in August. This commemorates independence from the United Kingdom which was attained on Monday, 6 August 1962 - the first Monday in August of that year. Another example is Thailand which celebrates the birthday of the King on 5 December. This date will change on the accession of the heir to the throne.====国庆日====国庆日是由一个国家制定的用来纪念国家本身的法定假日。它们通常是这个国家的独立、宪法的签署、或其他有重大意义的周年纪念日;也有些是这个国家守护神的圣人节。虽然绝大部分国家都有类似的纪念日,但是由于复杂的政治关系,部分国家的这一节日不能称为国庆日,比如美国只有独立日,而没有国庆日,但是两者意义相似,所以这里放在一起介绍。但是有一些国家没有特定的国庆日,例如英国。英国作为一个联合王国,其四个构成国家,英格兰,苏格兰,威尔士,和北爱尔兰都有各自的庆祝节日。例如:圣帕特里克节是北爱尔兰的官方节日,圣安德鲁节是苏格兰官方的节日,圣乔治是英格兰的节日,圣大卫是威尔士的节日。最近几年,英国官员也在提议建立一个这四个构成国家所共有的国庆日。大多数国家的国庆日是固定的,但也有些国家的国庆日的是变化的。例如,牙买加的国庆日是八月的第一个星期一。这因为它从英国独立的那天(1962年8月6日)就正好是八月的第一个星期一。另一个例子是泰国,它的国庆日就是国王的生日12月5日,所以这个日子会随着王权继任者而改变。