United Nations Day is celebrated all over the world on October 24th every year. The day is dedicated to celebrating the work done by the United Nations in promoting peace and security across the world. Synonyms for this special day include UN Day, International Day of the United Nations, and United Nations Birthday. The day marks the anniversary of the United Nations Charter, which was finalized on October 24th, 1945. It is an important day in which people around the world come together to reflect on the achievements of the United Nations and re-commit to working towards a more peaceful and just world.