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Chicago River Dyed Green In St. Patrick's Day Tradition

CHICAGO, IL - MARCH 16: Workers begin dying the Chicago River green to kick off the city's St. Patrick's day celebration on March 16, 2013 in Chicago, Illinois. The dying of the river has been a tradition in the city for 43 years. (Photo by Scott Olson/Getty Images)

St. Patrick's Day 2013

March 17, 2013

St. Patrick's Day is celebrated around the world, and even in space this year, on March 17.