April 20, or 4/20 in its calendar denotation, is a holiday celebrated by many weed-smokers both in the United States and around the globe.
It’s a day for smokers to celebrate their love of the intoxicating flower. Particularly in the U.S. where marijuana is not federally legal, it also serves as a rallying date for advocates of legalization.
Though there is no officially agreed upon story about the holiday’s origins, plenty of popular theories exist — perhaps the most famous tying the holiday’s date to a cohort of teenagers in California.
California is a state long known as a smoker’s paradise.
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Popular lore ties the birth of ‘4/20’ to a group of high schoolers attending Northern California’s San Rafael High School in the early 1970s.
The cohort which dubbed itself the ‘Waldos’ used to gather at 4:20 pm to toke up.
‘We weren’t stupid stoners,’ Steve Capper, 68, an original Waldo said, pointing to a certificate for exceptional achievement and citizenship he received in school.
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The point being, the Waldos engaged in after-school activities like sports and studying, so 4:20 was chosen as the time the group could all meet up.
The time stamp became code for the act of smoking weed, and eventually spread beyond the Golden State’s borders.
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Dave Reddix, a member of the ‘Waldos,’ told TIME Magazine in 2017 that the band helped popularize the term during his tenure working as a roadie for bassist Phil Lesh.
TIME reports that during a December show in 1990 some Deadheads in Oakland distributed flyers inviting people to smoke ‘420’ at 4:20 p.m. on April 20.
Though other theories exist about the origins of 4/20, including references to a California police code and a Bob Dylan song, the Waldos have remained adamant that they are the true architects of the holiday.