The Simpson’s 636th episode aired, making it the longest episode count of any TV series in history.
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Prince William and Kate Middleton tied the knot.
British Lieutenant James Cook became the first European to reach Australia's east coast.
Adolf Hitler and Eva Braun got married in Berlin, Germany.
Indonesia announced plans to move its capital city from Jakarta due to the city sinking.
Space Patrol aired the first 3D television show.
