I can't remember where I read it, or if I'm senile, but afaik you constantly have a list of experience events that you can get, which changes every time you get one. You can get the same experience event like every 2 days (or maybe 1 day?) as long as you're lucky enough to get it on that list again
Though some of them trigger in a stupid way, like getting "Pricked by the Spindle" on the first thing you craft on the wheel, or the 50th.
Also I'm not sure about this one, but it felt like I was getting hard experience event resets every 2 or 3 days. Literally all of a sudden getting 6-7-8 experience events for everything.
So I think this "birthday" already exists, and it happens much more often than every year