There were 850 delegates, and their advisers and staff together with the conference secretariat brought the total to 3,500. There were only ten plenary meetings of all the delegates, but nearly 400 meetings of the 12 technical committees, at which every line and comma of the UN Charter was hammered out. It was that in the Opera House at San Francisco on June 25, the delegates met in full session for the last meeting.
Delegates of fifty nations met at San Francisco between April 25 and June 26, 1945. Working on the Dumbarton Oaks proposals, the Yalta Agreement, and amendments proposed by various Governments, the Conference agreed upon the Charter of the United Nations and the Statute of the New International Court of Justice. The Charter was passed unanimously and signed by all the representatives. See more than 200 photos of the Conference.
International days and weeks are occasions to educate the public on issues of concern, to mobilize political will and resources to address global problems, and to celebrate and reinforce achievements of humanity. The existence of international days predates the establishment of the United Nations, but the UN has embraced them as a powerful advocacy tool. We also mark other UN observances.