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Short for Unofficial St. Patrick's Day, this is an event held each March at the University of Illinois at Urbana-Champaign. This is the largest local drinking holiday in the United States. It was created due to St. Patrick's Day being held over U of I's spring break. Students from across the country visit Champaign-Urbana to take part in this, as their schools do not consume as much in an entire decade as U of I does on Unofficial.
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