Have You Ever Wondered... What 4:20 Is? This page supplies possible reasons for the age-old association as well as coincidences and connections between pot and that magic number. 4:20 is tea-time for pot-smokers in Holland April 20th (4/20) is National Pot Smokers Day 420 is a police code for a drug bust in Los Angeles The first joint ever smoked was supposedly at 4:20 Bob Marley died at 4:20 There are approximately 420 active chemicals in THC 4:20 was when many hippies could finally get out of detention and get to smoke their first joint of the day All the clocks in Pulp Fiction are set to 4:20 420 is hebrew for smoking (hmm...) Chong was born at 4:20 on 4/20 Phish started all its sets at the Great Went at 4:20 Jerry Garcia apparentlydied at 4:23 (with 3 minutes being the average time for THC to set in to one's system) Boston's Song "Smokin'" is 4 minutes, 20 seconds. Of course there are many others, If you know of any let me know