The origin of National Day in English can be traced back to the establishment of many countries around the world. Each country has its own unique way of celebrating this important national holiday. For instance, in the United States, National Day is celebrated on July 4th, marking the signing of the Declaration of Independence in 1776, which declared the independence of the thirteen American colonies from British rule.

In China, National Day is celebrated on October 1st every year, commemorating the founding of the People's Republic of China in 1949. On this day, a grand military parade and flag-raising ceremony are held in Tiananmen Square in Beijing, showcasing the country's strength and unity. It is also a time for families to gather and celebrate together, often with fireworks, parties, and various cultural events.

The celebration of National Day in different countries reflects their distinct historical backgrounds and cultural traditions. Whether it's the fireworks over Sydney Harbour in Australia or the massive parades in Moscow, Russia, each country uses this occasion to express pride in its heritage and achievements. Understanding the origins of these celebrations can provide insight into the rich tapestry of global history and culture.