Statue of Louis Pasteur, at San Rafael High School.
|Observed by||Cannabis counterculture, medical patients, legal reformers, entheogenic spiritualists|
April 20 observancesApril 20 has evolved into a counterculture holiday in North America, where people gather to celebrate and consume cannabis. Some events have a political nature to them, advocating for the decriminalization of non-medical cannabis in the United States.
Observances have been held in San Francisco's Golden Gate Park near the Haight-Ashbury district, the University of Colorado's Boulder campus, Ottawa, Ontario, at Parliament Hill and Major's Hill Montréal, Québec at Mount Royal monument Vancouver, British Columbia at the Vancouver Art Gallery  Auckland, New Zealand at the Daktory.[unreliable source?] and Dunedin, New Zealand, at University of Otago.