Italian astronomer Giovanni Cassini discovered Iapetus, Saturn’s third-largest moon.
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St Katharine Docks opened in Central London, England, and it was one of the largest ports for trade in London in the 19th Century.
Benjamin O. Davis Sr. became the first African American US Army brigadier general.
Susan Smith murdered her two children and tried to pin on a made-up Black man.
London's last horse-drawn omnibus trip went from London Bridge Station to Moorgate.
Taylor Swift's third studio album 'Speak Now' was released. It won Billboard's 2011 Album of the Year.
