420, 4:20 and 4/20 are all pot smoker code for lighting up, and each April 20 crowds gather in cities across the U.S. to celebrate cannabis and push for laws okaying its use. It is called National Marijuana Day
Now in Delmar we are so far out of the main stream I have never paid any attention to it - I don't think I have even heard of it. However my daughter is a Maryland Judiciary Commissioner over in Montgomery County and she was mentioning how full of Marijuana and Marijuana related cases her Wednesday night (4/20) was. She said she thought every other case was a Marijuana case.
Those sort of things does make me happy living in Delmar and just putting up with our local low life's that we have.
There are many myths behind why the holiday is called 420 and is celebrated on April 20. One possibility is 420 began at San Rafael High School in 1971, when about a dozen pot-smokers would meet daily to smoke at 4:20 p.m. To be discreet, they used the term 420 as a secret code when chatting to each other about when it was time to smoke pot.