Because that is 4-20, and 420 is the slang term for weed.
Adolph Hitler's birthday and "weed day"--- what a combo
Now you see I hate it when people call it national weed day or weed day - it's National Weed Smoking Day and it's on April 20th.
It's on April 20th. happy weed day
The holiday on April 20 is known as "420" and is associated with cannabis culture. It has become a day for marijuana enthusiasts to come together, celebrate, and advocate for the decriminalization and legalization of cannabis.
420 refers to marijuana/weed/pot. Today is 4/20 (April 20th).
Mad About You - 1992 The Weed 4-20 was released on: USA: 21 April 1996
After April 15th became tax day. 4.20 IS NATIONAL WEED DAY BECAUSE IT IS BOB MARLEYS BIRTHDAY! (Some people think it is because when police find weed on a person, they charge them, and they call it a 420.)
Because Obama blazes
Weed Wolf - 2008 was released on: USA: 20 April 2008 (video premiere)
April 20 1948 was a Tuesday.
4-20 weed day baby
Luther's Magic Weed - 2011 was released on: USA: 20 April 2011 (internet)