VJ Day stands for "Victory over Japan Day." It is the day marking the official end of World War II following Japan's surrender. This day is celebrated on August 15, 1945, in many Allied countries, commemorating the announcement of Japan's surrender, which effectively ended the war in the Pacific. The formal surrender documents were signed later on September 2, 1945, aboard the USS Missouri, which is sometimes also recognized as VJ Day, especially in the United States.