By Jessica Roy
For the last 52 years, Chicago has kicked off its St. Patrick’s Day celebrations by dying the Chicago River a bright green. The ceremonial greening of the river took place Saturday morning at 9:30, and YouTuber Peter Tsai posted this awesome 30-second time-lapse video showing the process from start to finish.
More Must-Reads from TIME
- Cybersecurity Experts Are Sounding the Alarm on DOGE
- Meet the 2025 Women of the Year
- The Harsh Truth About Disability Inclusion
- Why Do More Young Adults Have Cancer?
- Colman Domingo Leads With Radical Love
- How to Get Better at Doing Things Alone
- Michelle Zauner Stares Down the Darkness
Contact us at letters@time.com