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In Honor of St. Patrick's Day, Here's a Time Lapse of the Chicago River Dyed Green

The Chicago River was dyed green a week before St. Patrick's Day

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The river may no longer be dyed green, but St. Patrick's Day in Chicago is officially here.

Last week, the Chicago plumbers union carried on their decades-long tradition of dyeing the Chicago River green using a mysterious recipe that may or may not require the help of some lucky Leprechauns.

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According to officials the river only remains green for several hours. But you can relive the transformation in the time-lapse above.

Re-watch the moment the Chicago River was dyed green for St. Patrick's Day in an iconic annual tradition.

If you are still hoping to get into the St. Patrick's Day spirit this chilly weekend, the family-friendly "Shake Your Shamrock" event in Norwood is slated for Saturday.

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