On what date did the United States mark V-J Day in 1945?

The United States marked V-J Day on August 14, 1945.

American newspapers and the public treated August 14 as Victory over Japan Day after President Harry S. Truman announced that Japan had accepted the Allied surrender terms. The announcement came after Japan's decision was communicated to the Allies and before the formal signing ceremony.

The date can be confusing because the news reached different places at different local times. In Japan, Emperor Hirohito's surrender broadcast aired on August 15, while many countries commemorate V-J Day on August 15. The formal legal surrender occurred later, on September 2, aboard USS Missouri.

V-J Day marked the end of World War II against Japan, but it did not mean that every Japanese military unit immediately stopped fighting. Some local hostilities and surrender ceremonies continued afterward. The term is also distinct from V-E Day, which marked Germany's surrender in Europe in May 1945.