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Watch This Time-Lapse of the Chicago River Turning Green for St. Patty's Day

Congratulations on surviving yet another St. Patrick's Day. Whether you ventured into the fray of Irish stereotypes, green beers and beards, and near-constant Dropkick Murphys or you stayed at home and read W. B. Yeats, we salute you for getting through it.

However you feel about those other St. Patrick's Day traditions you'll agree that turning a river a noxious shade of green is a wholesome and wonderful custom. Everyone gets a little thrill out of it, and supposedly it's environmentally sound. And we promise you'll love it even more after watching little boats scurry across the Chicago River in the time-lapse above, which was taken by Instagram user lindseyengelbert.

As to how Chicago dyes its river green, this started back in 1962 when Chicago Plumbers Union business manager Stephen Bailey got the idea to use a dye for tracing leaks in buildings to bring the river into the celebration. The Chicago Plumbers Union has been doing it ever since, using a powdered dye with a secret recipe that's similar to food coloring. 

This year they dumped around 40 pounds of dye into the river, and it should last between 24 and 48 hours. This is actually the largest stretch of river the city has ever dyed, stretching out to State Street, which means hundreds more people watching from the four bridges with a view of the river. 

Plus you watching this time-lapse again because it's super-cool.

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James Chrisman is a News Writer at Thrillist who has not finished that essay yet. Send news tips to news@thrillist.com and follow him on Twitter @james_chrisman2.