So did the people in Zanarkand 1000 years ago know that it was Sin attacking them? To my recollection, they seemed like they had no idea, especially since Auron tells Tidus "We called it Sin" and Tidus is all "bwuuuhh!?". Also, as there had been attacks before that, did it just never attack anywhere close to Zanarkand since the inhabitants seemed like they had no idea what was going on? Yu Yevon lost control over it, but I don't seem to recall any mention of when exactly that was. Is this hand-wave or is there an actual general date?