well 420 isn't a date for me... im in australia where we put the day, then the month, then the year. unless they have introduced some extra months i havent heard about *pricks ears*
fickles my mind to try and see the logic in having month, day then year... but either way we do celebrate days of weed down under, but mostly they happen when we get onto some good 'erb or something.
we had a celebration called blunt day a while back, rolled a few blunts and toked em in the sun by the pool all day
ahh the good ol days... but its never a specific day as the nature of being a lazy stoner means that how in the hell am i supposed to remember one day every year?!? crazy talk.