You can see in serebii they classify event into 4 groups like: Japan, US, Europe and OE. So this means that you have to be in that area (like in Tokyo, Japan) to get the events there (Japan events) or you just have to play the Japanese version of the game to get the event wherever in this universe you are?
My signature? Ok here go...*sign* *sign*
But wait, what am i signing?
HOUSE SELLING CONTRACT
Oh God :|