On what date was Japan's surrender first announced in Japan, creating V-J Day in 1945?

Japan's surrender was first announced in Japan on August 15, 1945, creating the date commonly associated with V-J Day.

Emperor Hirohito's recorded address was broadcast at noon Japan Standard Time. He announced that Japan had accepted the terms of the Potsdam Declaration, although the formal language did not plainly use the everyday word “surrender.”

The date can cause confusion because the announcement reached the United States on August 14, due to the time difference. The formal surrender ceremony occurred later, on September 2, aboard USS Missouri. Britain and several other Allied countries traditionally observe August 15, while the United States has also used September 2 as its official commemoration date.