Elton John and his entourage flew into Moscow, making him the first western pop star to tour the USSR.
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Amelia Earhart took off from Newfoundland.
The chandelier of the Palais Garnier Opera House broke, and its debris fell on a crowd.
The Pictish armies of King Bridei Mac Bili won a decisive victory over the armies of Northumbria at the Battle of Dun Nechtain.
The first Christian ecumenical council opens at Nicaea, Asia Minor. It was the first attempt to achieve agreement in the church.
Quebec held a referendum on whether to begin negotiations with Canada to become independent.