1782 – Construction began on the Grand Palace (pictured) of Bangkok, the official residence of the King of Thailand.
1882 – The Irish civil servants Thomas Henry Burke and Lord Frederick Cavendish were stabbed to death by members of the radical Irish National Invincibles as they walked through Phoenix Park in Dublin.
1941 – American entertainer Bob Hope performed the first of his many shows for the United Service Organizations.
1954 – At Oxford's Iffley Road Track, English runner Roger Bannister became the first person to run the mile in under four minutes.
2010 – Major stock indexes in the United States dropped nearly 9% and rebounded very quickly, exacerbated by high-frequency traders using algorithms which have since been outlawed.