Well, happy fucking birthday. Another few months and you'll have beat Jesus in the living stakes (but possibly not the eternal living stakes. Although, having not met you, I don't actually know how holy you are).
About the Nilsen thing, my birthday's on the same date as the discovery of the Manson killings and the bombing of Nagasaki, and it's never stopped me from having a good time...
No, by birthday is the day before, which I share with Andy Warhol and Princess Beatrice of York. Which has no significance at all, but thanks Wikipedia.