All countries in the world have their own National Day, National Day in different countries of the festive way, as the traditional and customs of the differences, and different.

The National Day is an important feast for every country, but the various countries' National Day name is different. Many countries in the world is called "National Day" or "National Day", and some countries called "independence day" or "independence day", also some call "republican", "republic day day", "revolution day", "liberation", "national rejuvenation day" and "constitution day", still have to add the name directly "day", such as "Australia day", "Pakistan day", others in the king's birthday or coronation day as the National Day, such as the case of the king, the date of the National Day changes will be replaced.

National Day each year, countries have a different forms of celebration activities to strengthen its people's patriotic consciousness, strengthen the country's cohesive force. Between the various countries to also congratulate each other. The National Day every ten every five, some will expand to celebrate. To celebrate the National Day, governments usually we will hold a National Day conference, by national heads of state or government or foreign minister, invited presiding in all countries in the local ambassadors and other important foreign guests to attend. But some countries do not held a reception, such as the United States, Britain are not held a reception.

世界各國(guó)都有自己的國(guó)慶節(jié)，各國(guó)對(duì)于國(guó)慶節(jié)的慶賀方式，由于傳統(tǒng)和俗的差異，而有所不同。

國(guó)慶節(jié)是每個(gè)國(guó)家的重要節(jié)日，但各國(guó)國(guó)慶節(jié)的名稱有所不同。世界上許多國(guó)家叫"國(guó)慶節(jié)"或"國(guó)慶日"，還有一些國(guó)家叫"獨(dú)立日"或"獨(dú)立節(jié)"，也有的叫"共和日"、"共和國(guó)日"、"革命日"、"解放日"、"國(guó)家復(fù)興節(jié)"、"憲法日"等，還有直接以國(guó)名加上"日"的，如"澳大利亞日"、"巴基斯坦日"，有的則以國(guó)王的生日或登基日為國(guó)慶，如遇國(guó)王更替，國(guó)慶的具體日期也隨之更換。

每年國(guó)慶，各國(guó)都要舉行不同形式的慶�；顒�(dòng)，以加強(qiáng)本國(guó)人民的愛(ài)國(guó)意識(shí)，增強(qiáng)國(guó)家的凝聚力。各國(guó)之間也都要相互表示祝賀。逢五逢十的國(guó)慶，有的還要擴(kuò)大慶祝。為慶祝國(guó)慶，各國(guó)政府通常要舉行一次國(guó)慶招待會(huì)，由國(guó)家元首、政府首腦或外交部長(zhǎng)出面主持，邀請(qǐng)駐在當(dāng)?shù)氐母鲊?guó)使節(jié)和其他重要外賓參加。但也有的國(guó)家不舉行招待會(huì)，如美國(guó)、英國(guó)均不舉行招待會(huì)。