- Share links: 420 - 420list - 420lists - 420cities
- See: Signup. Cannabis event lists. Global Marijuana March.
"420" events are cannabis-related events held on April 20 (4/20).
- 420 Four Twenty 2014 Worldwide Cities List. By Chris Goodwin.
- Cannabis Country: National Pot Smokers Day 420 Events 2014.
- The Cannasseur's 2014 4/20 Event Guide. By Kayla Williams.
- The Ultimate 4/20 Event Guide. By Steve Bloom.
- Basic 2014 Global Marijuana March city list. See column for 4/20 events.
- Category: 2014 420 event graphics.
- Activists to plant cannabis all over the country this 420 | Intellihub News.
- Johnny Cannabis Seed and Operation Planter's Week.
- Operation: Planters Week. Spread your seeds around April 20.
- Anonymous and Team Vendetta #OpCannabis420 Cannabis Legalization.
- Erb4Herb. Canada. facebook.com/erb4herb
- Basic 2013 Global Marijuana March city list. See column for 4/20 events.
- Category: 2013 420 event graphics.
- 4/20 2013: Worldwide Marijuana Rally List. By Chris Goodwin, Cannabis Culture.
- 420rally.ca - Many cities in Canada.
- Facebook: Erb4Herb National 420. Canada. facebook.com/Erb4HerbNational420
- The Official 4/20 Event Guide. By Steve Bloom, CelebStoner.com.
- Some 420 organizing by state , and Facebook: Cease Net and Occupy with Cannabis.
- Thousands stage massive 4/20 smoke-ins to protest Canada's pot laws.  By Peter Henderson. April 20, 2012 article. Victoria Times Colonist. Associated article: Photos: Famous people who smoke pot. April 19, 2012.
- Willie Nelson Honored With Bronze Statue of Himself on 4/20. April 21, 2012 article.
- 4/20: Worldwide Cannabis Celebration on April 20, 2012. By Chris Goodwin, Cannabis Culture. April 2, 2012 article.
- Canada's 4/20 Celebrations To Reach Higher Level in 2012. By Jeremiah Vandermeer, Cannabis Culture. April 19, 2012 article.
- 420 Events 2012: List of 4/20 Celebrations, Parties, Things To Do | NowPublic News Coverage.
- International Cannabis Day 2012 report. Head Haze.
- Facebook: Cannabis Day.
- Cannabis Culture News LIVE: 4/20 Bigger Than Ever in 2011. By Cannabis Culture. April 22, 2011 article.
- Media Loves 4/20 Marijuana Celebrations. By Cannabis Culture. April 21, 2011 article.
- Messy Master List of 2011 4/20 Events | The Weed Blog.
- Record Numbers Celebrate Cannabis on 4/20. By Jeremiah Vandermeer, Cannabis Culture. April 21, 2010 article.
- 4/20: Smoke Out The Globe. By Chris Goodwin, Cannabis Culture. April 1, 2010 article.
- CelebStoner's 4/20 Events Calendar. April 12, 2010 article.
- '420 Day': Events Around The Annual Unofficial Celebration. MTV News.
- 2010 4/20 Events. By Houroc. HailMaryJane.com