26 June 1945
The UN Charter was signed.
The Charter of the United Nations
The UN Charter was signed by 50 countries in San Francisco.
24 October 1945
The UN Charter was ratified.
The United Nations was born
The United Nations officially came into existence. The organization's primary mission was — and remains — to "save succeeding generations from the scourge of war," maintain international peace and security, develop friendly relations among nations, and promote respect for human rights.