Don't ask me how. [ She laughs softly, though not at him. She's hopeless, but she's met people who could explain it up, down, and inside out by now. ] It's a mystery in my world, and it was very specific. From my point in time, I could only go back two hundred years, and then forward again in return.

[ Complicated and still not completely understood by her, might not ever be. ]

Others can tell you so much more. A least one person here is an actual time traveler, he lives in the Free Cities. Someone else explained that I'd likely stepped through an unmarked portal, and that sounds as good as any other explanation. Is it possible where you're from?