The Beatles started their world tour.
The band started in Copenhagen, Denmark, and only ever did one world tour.
Source
The Beatles give their last public performance.
The Beatles released one of their all-time hits, Hey Jude, in the US.
Paul McCartney filed a lawsuit to break up The Beatles.
The Beatles performed their final show in England at Empire Pool in Wembley, London.
The universe's largest known diamond is discovered.
