The process of arrival is unknown, but it's tied to the nature of this planet. Theories are wild, with no real proof either way, but it is the world itself doing it, some...cycle with in it. I can't really say more beyond speculation...

[He pauses again, making sure she's following.]

But, it also creates anomalies within the time stream. If I were to guess, you're from a time at least forty years before my own. Anakin is here, and he's twenty four. I'm thirty two. [Huffing a soft laugh, Luke rolls his shoulder.]

You can imagine how complicated that makes things.