April 20th may seem like just another day of the year, but for those immersed in cannabis culture, it is a time of celebration. Commonly known as “4/20,” “4:20,” “420,” or simply “four-twenty,” the day is a time for enthusiasts to gather, advocate, and celebrate cannabis legalization in a counterculture holiday. Before 4/20 comes around again this year, why not learn more about its origins?

Why That Number?

Four-twenty is less about the day and more about the time. The number’s association with cannabis culture can be traced to 1971 in San Rafael, California, with a group of five high school students searching for an abandoned cannabis crop. Referring to themselves as “the Waldos,” since their hangout spot was a wall outside the school, they decided to meet at 4:20 pm by a Louis Pasteur statue.

When they discussed the plan to meet at 4:20 at the Louis statue, and repeated expeditions resulted in repeated failure, the phrase gradually shortened to 4:20. It earned a strong association with consuming cannabis. When their story was shared by the High Times magazine, “420” was forever made a part of cannabis culture—the number became funny; the time, seen as a socially acceptable time to smoke; and the day, now a chance for celebration and advocacy.

Current-Day “4/20” Events

4/20 has become a day for events and celebration, with numerous festivals, concerts, and educational seminars in cities worldwide. As more states and countries legalize the drug, the popularity of 4/20 celebrations only grows.

California is home to the Coachella Valley Music and Arts Festival, which coincidentally overlaps with 4/20 celebrations. More specifically, Los Angeles offers a range of 4/20 events for cannabis enthusiasts. Atlanta, Georgia, hosts the Sweetwater 420 Fest, a three-day event focusing on environmental awareness themes.

A Day for Advocacy

While 420 began as a number associated with one group’s quest for a cannabis crop, 4/20 now acts as a time for advocacy. Many states still lack cannabis legalization, and denizens cannot enjoy what many other parts of the country can. Policies are shifting, but 4/20 is a reminder that education and initiative are still key to the cannabis reform movement.

Using Cannabis Responsibly

Most importantly, a 4/20 celebration should not justify throwing caution to the wind. Local laws and regulations may be different from one event to another, and safety should always be a priority when consuming cannabis. Personal safety is key during 4/20, and responsibility reflects well on future advocacy efforts.

A Future for 4/20

From a time for a small group to meet to a global day of celebration, the future of 4/20 is bright. Whether you reflect on the progress made or become an active participant in the work yet to be done, 4/20 is your opportunity to be part of the culture.