The Vought-Sikorsky VS-300 became the first successful helicopter to fly.
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Mary Ann Fischer gave birth to quintuplets, who became the first US quintuplets to survive past infancy.
Britain skipped 11 days of the Calendar from September 3 to September 13, with the adoption of the Gregorian calendar starting on this day.
The Luna 2 spacecraft by the Soviet Union became the first human-made artifact to land on the moon's surface.
The people of Estonia voted to approve joining the European Union.
14-year-old Ahmed Mohamed was arrested at school after bringing in a homemade clock, which was mistaken for a bomb.
