It’s widely believed 420 was coined in the early 1970s by a group of Californian students
Today, cannabis users across the globe will be lighting up to celebrate 420.
The annual event is observed as a means of celebrating marijuana use, while also campaigning for it to become legalised in parts of the world where it is prohibited.
Here’s everything you need to know about 420:
What is it?
420 is an annual event taking place on 20 April, in celebration of marijuana.
This year it coincides with the Easter bank holiday weekend in the UK.
While 420 is widely used in common vernacular in reference to the date of the event, it also relates to the origin of the observance, the history of which can be traced back to the early 1970s in California.
How did it start?
It’s widely believed that 420 owes its roots to five Californian high school students – Steve Capper, Dave Reddix, Jeffrey Noel, Larry Schwartz and Mark Gravich.
In 1971, the five San Rafael High School students devised a secret code which they used to indicate to each other that they would meet later in the day to smoke marijuana.
After saying “420” to each other in passing in their school hallways, they would then meet at 4.20pm in order to smoke marijuana.
“I could say to one of my friends, I’d go, ‘420’, and it was telepathic. He would know if I was saying, ‘Hey, do you wanna go smoke some?’ Or, ‘Do you have any?’ Or, ‘Are you stoned right now?’ It was kind of telepathic just from the way you said it,” Capper told the Huffington Post.
“Our teachers didn’t know what we were talking about. Our parents didn’t know what we were talking about.”
Nicknamed the “Waldos”, because they smoked marijuana against a wall, their chosen smoking spot was by a statue of 19th-century scientist Louis Pasteur at their school.
“We got tired of the Friday night football scene with all of the jocks,” Reddix told Time magazine.
“We were the guys sitting under the stands smoking a doobie, wondering what we were doing there.”
The student athletes learned of an abandoned cannabis crop growing near Point Reyes Peninsula Coast Guard Station.
However, despite their many attempts to find the plot, they were unsuccessful.
How is it celebrated?
While it began in the US, 420 has since become a celebration observed all over the world.
In addition to the widespread smoking of cannabis which occurs on 20 April, several events also take place to mark the occasion.
What events are on for 420?
Today, thousands of cannabis users are expected to meet in Hyde Park in celebration of 420.
More than 30,000 are expected to meet in the park to protest the existing laws prohibiting use and possession of marijuana in the UK.
“This year has been huge for the cannabis industry, not just for business but also the law itself. In the UK we’ve seen considerable progression made in regards to medicinal access,” said Marwan Elgamal, founder of the THC The High Club.
“To mark what has been an unprecedented year for the cannabis in the UK, we’ve put plans in place for this to be an unforgettable 420. Last year there were around 15,000 people, this year it will be more than double that.”
In the US, where 420 originated from, organised rallies are due to take place in states including Colorado, California, Michigan, Florida and many more