Chapter XIX of the United Nations Charter

Wikisource has original text related to this article:

Charter of the United Nations#Chapter XIX - Ratification and Signature

Chapter XIX of the United Nations Charter deals with ratification and signature of the UN Charter. It provided that the Charter would enter into force once ratified by the Permanent Five members of the United Nations Security Council and a majority of the other signatory states. The Charter was opened for signature on 26 June 1945 and entered into force on 24 October 1945, which became known as United Nations Day. In the meantime, the atomic bombings of Hiroshima and Nagasaki took place on August 6 and 9, respectively; the introduction of this new weapon of warfare completely changed the security environment in which the UN Charter was promulgated.

References

United Nations Charter

Text	Preamble Chapter I II III IV V VI VII VIII IX X XI XII XIII XIV XV XVI XVII XVIII XIX Amendments

History	1919 Paris Peace Conference Treaty of Versailles Covenant of the League of Nations 1943 Moscow Conference 1943 Tehran Conference 1944 Dumbarton Oaks Conference 1945 Conference on International Organization Signatories

Organs created	Security Council General Assembly Economic and Social Council Trusteeship Council International Court of Justice (Statute) Secretariat Military Staff Committee

Complete text UN portal