What you didn't know about St. Patrick's Day... the luckiest day of the year!
Believe it or not, the color of St. Patrick was not actually green, but blue! In the 19th century, however, green came to be used as a symbol for Ireland.
Mahesh Shantaram via Wikimedia Commons
History's greatest showman is born, a war begins, and two of man's greatest inventions are unveiled, all on this day.
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