Mad Saints Day. In honor of all the crazy sages throughout history (e.g. Hanshan, Diogenes the Cynic, Ikkyu, St. Isadora, Drukpa Kunley, Nasreddin, Milarepa, William Blake, etc.)

It’s celebrated by violating some societal convention that doesn’t have direct adverse health and safety consequences (This is not “The Purge.”) Of course, violating even the most absurdly arbitrary societal convention will cause many people to freak out, so the other element of celebrating Mad Saints Day is just getting the f@$& over it.