1974 Death [Sithu] U Thant, United Nations Secretary-General (1961-72), dies in New York of cancer at 65 1967 Event U.N. Secretary General U Thant makes public proposals for peace in Vietnam 1962 Event U Thant of Burma elected 3rd Secretary-General of United Nations unanimously 1961 Event General Assembly unanimously elects U Thant acting secretary general 1961 Event U.N. unanimously elects U Thant acting Secretary General of the U.N. 1909 Birthday [Sithu] U Thant, Burma, 3rd United Nations Secretary-General, 1962-72 1909 Birthday U Thant, born in Pantanaw, Burma, born Pantanaw U Thant, diplomat and third Secretary-General of the United Nations from 1961 to 1971