420, 4:20, or 4/20 (pronounced four-twenty) is a code word used by people who smoke cannabis to talk about the drug. It is especially used to talk about smoking cannabis at 4:20pm (16:20) in the afternoon, and for the day April 20 (4/20 in the American calendar).
|Observed by||Cannabis counterculture, legal reformers, entheogenic spiritualists|
- "Daily Independent Journal from San Rafael, California". November 20, 1954. Retrieved April 22, 2017.
- Chronicle, San Francisco (1962). The San Francisco Chronicle Reader. McGraw-Hill. Retrieved April 22, 2017.
- King, Matt (April 24, 2007). "Thousands at UCSC burn one to mark cannabis holiday". Santa Cruz Sentinel. Archived from the original on April 26, 2007.
- Media related to 420 (cannabis culture) at Wikimedia Commons