Why the 20th of April?

Everyone who smokes green, will smoke on 4/20 to celebrate.

But what are we celebrating and what is the importance of the date?

Just wondering if anyone here on the forums knew.
Veratyr Star Reviewed by Veratyr Star on . 4/20 Why the 20th of April? Everyone who smokes green, will smoke on 4/20 to celebrate. But what are we celebrating and what is the importance of the date? Just wondering if anyone here on the forums knew. Rating: 5