<Tr> <Th> Type </Th> <Td> Secular </Td> </Tr> <Tr> <Th> Significance </Th> <Td> Day to smoke Cannabis around the time 4: 20 p.m </Td> </Tr> <Tr> <Th> Observances </Th> <Td> Cannabis consumption </Td> </Tr> <Tr> <Th> Date </Th> <Td> April 20 </Td> </Tr>

Where did the meaning of 420 come from