It was police code for marijuana-specific calls on police radio channels (*in the US). It was changed for obvious reasons many years ago By the time it was changed, 420 was already synonymous with marijuana all over the world. Same goes for rap music..."get caught up on a 187" and "slipped and judge slapped em with a 311" with 187 being police code for murder and 311 being code for robbery.The codes are all probably different now since the person sharing this with me was a retired judge/ ex-police officer and he was talking about all this like it was from a loooong time ago. Anything but that meaning is a madeup story by some stoned kid who probably had a persuasive way of telling stories. Oh btw, Haight Ashbury has that time there because it means pot, not because they started it. They have gay flags everywhere...did the rainbow flag originate from there too? I love hearinng all the creative BS people were told and regurgitated. Grateful Dead's address? Hahaha...awesome!

187 is a drive by shooting and 420 was also the time some tokers thought was ok to start smoking weed

Straight story in my humble opinion, is that it symbolises triumph of marketing.

One should consume cannabis when, where, as much he/she wants. Every day, every joint, every hit is a celebration of life and freedom.
One doesn't need special occasions or reasons to consume, i think.

Seems a popular opinion is a group of teens in cali, kinda cool not sure though but fashion in languages is fascinating. Jive Turkeys......

https://hellogiggles.com/news/420-meaning/

https://news.vice.com/en_us/article/bja598/the-story-behind-every-potheads-favorite-number-420

http://time.com/4292844/420-april-20-marijuana-pot-holiday-history/

Peace! :)

sounds most legit

According to Oxford University Press...

'The real story involves two friends, Steve Capper and Dave Reddix, who bonded over smoking pot in high school during the early 1970's. One day, they heard about a field of marijuana near a Coast Guard base where they were told they could pick as much as they wanted. With a map in hand, they went searching after school for the magical field of marijuana. Every day, they met under a statue of Louis Pasteur at 4:20.

"And we'd remind each other in the hallway that we were going to meet at Louis at 4:20. So we'd look each other as we passed by and we'd go, '4:20 Louis.' You always smiled when you said it, it was kind of a knowing smile. But eventually the Louis dropped," '

Yup, 4:20 is a time and not a date. It signifies the end of the school day within the Californian state education system during the 70's. It's basically the time folk meet up and have some fun... fo'twenny!

Always thought it was based on a indoors vegetative lighting grow schedule.

As in 4 hours darkness, 20 hours light = 420

best reconstructive theory right here

It's from the clock on Haight and Ashbury

That depends if its PM or AM... ; )

420 PM = disappointment - I know I have probably another 6 hours before I can have smoke

420 AM = Oh crap - Ive just woken up on the sofa again! Time to make my way up to my actual bed.

ITs Actally April 20th the ideal date too germinate your seeds to be grown outside thus being past the last frost of the year and is the date all uk growers know of or at least i thought did lmao

420 degrees F is the maximum temperature at which you can vaporize THC. I appreciate the 4/20 tradition might have come before vaping facts became knows, but we're stoners... sometimes the answer comes before the question. I prefer mine at 390 degrees, but happy 420 anyway!

someone oughta brand a concentrate thats optimally vaped at 420

I thought at 4:20 the minute hand and hour hand unite and release a wee waft of timeless smoke....

It symbolises getting high all the time and is thus more sacred than any biblical numerology