On which date did the United States commonly observe V-J Day in 1945?

The United States commonly observed V-J Day on August 14, 1945. News of Japan’s acceptance of the Allied surrender terms reached the United States on August 14 in local time, prompting public celebrations.

The date differs from the date used in Japan and many British Commonwealth countries. Japan’s emperor announced the surrender in a radio broadcast on August 15 Japan Standard Time, while the formal document was signed on September 2.

President Harry S. Truman announced Japan’s surrender on August 14 and declared that the war was effectively over, though the legal signing ceremony had not yet occurred. Newspapers, crowds, church bells, and public gatherings marked the news across the United States.

Because of time zones and the distinction between announcement and formal signing, V-J Day can refer to August 14, August 15, or September 2 depending on the country and historical context.