International Beer Day (IBD) is an August 5 holiday invented in 2007 in Santa Cruz, CA. As opposed to Oktoberfest, which is in the cold months and largely European, International Beer Day is meant to be celebrated across the world while it's still warm enough for cold beer. International Beer Day is celebrated by drinking beer, drinking beer with friends, and buying beer for others. While there are various other traditions, these seem to be the key attributes. The suggested way to greet someone on International Beer Day is to hand them a beer and say "I bring you the gift of beer". As a general rule, you can't refuse the beer. Cheers to beer drinkers in USA, Canada and around the world. Are you going to celebrate? From Molson : We're proud to brew Canada's favourite lager as a contribution to today's International Beer Day!