Those in the cannabis world know that weed’s official holiday is April 20 — better known as 420 — with big-time sales and origin stories dating back more than half a century. But there’s a new date on ...

April 20 or 420, has been synonymous with marijuana for decades. The origin of the triple-digit holiday is rooted in the early 1970s with a group of California friends obsessed with smoking weed ...

For decades, thousands of cannabis fans have gathered at “Hippie Hill” in San Francisco’s Golden Gate Park for unofficial celebrations of 420, the annual cannabis holiday celebrated on April 20.