So tomorrow is my birthday but don't wish me a happy birthday just yet. In Germany its a no noto wish someone a happy birthday before the actual day. And you definately don't have a party before the actual day even if it's convenient. You just might not make it till then! In America, I'd say you can birthday it up from up to a week before the actual event. I mean if I die on my birthday, in America at least I could have enjoyed a big party the weekend before!