- The cannabis history timeline has vague recollections when it comes to 420 being celebrated and why. The origin story of 420 can depend a lot on which part of the world you live in. There are those who link the “420” reference with the numerical chemical compounds found in marijuana. Groups in the Northern Hemisphere consider it the tea time in Holland, where cannabis use has been part of the trade in the port city of Amsterdam for decades.
- Those who are superstitious in America claim “420” was part of a police criminal code used to alert police forces working together of the presence of people in possession of marijuana. Others in America who are fans of popular musician Bob Dylan claim the reference is from his song titled “Rainy Day Women #12 & 35” and its lyric, “Everybody must get stoned.” When 12 is multiplied by 35 you get 420.