 United Nations Day is celebrated on October 24th every year. It marks the official establishment of the UN, or United Nations, in 1945. What is the UN? It is an intergovernmental organization whose primary role is to maintain world peace and security. The United Nations was founded immediately after the end of World War II. On 25 April 1945, 50 governments met in San Francisco and started drafting the UN Charter. The organization's objectives are to maintain international peace, protect human rights, deliver humanitarian aid, promote sustainable development, and to uphold international law. The UN had 51 members at the time of its establishment, which has now increased to 193 countries. It plays an important role in developing friendly relations among countries, achieves international cooperation and aims to prevent further wars. So, on 24 October 1945, the UN Charter was ratified, leading to the official establishment of the UN. This day was first celebrated in 1948. In 1971, the UN also recommended that the member states observe it as a public holiday. Though it's not an official public holiday, people come together and celebrate the day with pomp and show in various cities and different countries. National costumes, flags, speeches, slogans, and parades are organized to mark the day and promote the idea of diversity and unity. And so, we celebrate the establishment of the United Nations all over the world.