Valentinian I, also known as Valentinian the Great, ascended to the throne as the Roman emperor.
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Wyoming's Grand Teton National Park was established after being signed off by President Calvin Coolidge.
British Prime Minister Winston Churchill went public that Britain had its first atomic bomb and planned to test it in Australia by the end of the year.
£1 notes were circulated in Britain.
The HMHS Britannic, sister to the RMS Titanic, was launched at Harland and Wolff shipyard in Belfast.
The New York Philharmonic Orchestra performed in Pyongyang, North Korea.
