The origin of the 420 association with marijuana is shrouded in myths and tales, but its cultural significance is undeniable. This innocuous number has evolved to symbolize the global nod for cannabis consumption, be it referencing the date or time. What Does 420 Mean Now? In 2003, California passed Senate Bill 420 , which established the regulation of medical marijuana in the state. The cheeky choice of name can be seen as a symbol of the plant’s gradual transformation from the counterculture to the mainstream as more people recognize the healing potential of cannabis. What Is " 420 ... Tracing 420 's origin While there is no concrete reason for how 420 came into being, several theories have surfaced over the years. One of them traces 420 to Marin County, California, where, in ... Discover the true history of 420 , how it became linked to marijuana, and why Hawaii embraces this iconic cannabis culture with aloha spirit.