, or commonly known as the Treaty of Peace with Japan, Peace Treaty of San Francisco, or San Francisco Peace Treaty), mostly between Japan and the Allied Powers, was officially signed by 48 nations on September 8, 1951, at the War Memorial Opera House in San Francisco, California, United States. It came into force on April 28, 1952. According to Article 11 of the Treaty of San Francisco, Japan accepts the judgments of the International Military Tribunal for the Far East and of other Allied War Crimes Courts imposed on Japan both within and outside Japan.