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United Nations Day 24 October 2010


History of the Day

UN Day marks the anniversary of the entry into force in 1945 of the UN Charter. With the ratification of this founding document by the majority of its signatories, including the five permanent members of the Security Council, the United Nations officially came into being.

24 October has been celebrated as United Nations Day since 1948. In 1971, the United Nations General Assembly recommended that the day be observed by Member States as a public holiday.

UN Headquarters: Then and Now

In 1949 UN Day was celebrated with a cornerstone ceremony for the world organization's permanent headquarters, then under construction in New York City.

Currently, the iconic UN buildings are being renovated under a multi-year project that is scheduled to be completed in 2013. The project seeks to preserve the original complex, which is a historical and architectural landmark, while bringing it up to modern safety and efficiency standards.

UN building under construction in 1949 UN building under renovation in 2010

The UN Secretariat building being constructed in 1949—and renovated in 2010. (UN Photos)