What Does 420 Mean? Many sources track the origins of national 420 day back to northern California, but don’t let that stop you from celebrating in Alaska! Thanks to progressive cannabis legislation, Alaska has become a leading source of cannabis culture. We’re anticipating a big celebration throughout the state this coming April. Learn more about 420 and how it became such a big deal throughout the United States, then decide how you’ll celebrate this year. The History Of 420: Roots There have been …