"Tag der Deutschen Einheit" is celebrated on October 3rd each year in Germany. It marks the anniversary of the reunification of East and West Germany in 1990, following the fall of the Berlin Wall in 1989. This day is a national holiday, symbolizing unity and the end of division in the country. The celebration includes various events, such as concerts, speeches, and cultural activities across Germany. The main festivities often take place in Berlin, where the official ceremony is held. This day serves as a reminder of the importance of freedom and democracy in the nation.