Don't get me wrong, I love this story so far, but I think that these "fateful days that we all are dreading just so happen to coincidentally be today" theme is a biiiiit too repetitive. I do think it accelerates the story which I'm not mad at.
How were they having a hard time finding some old books? I mean school libraries should contain classics ... hell we had books that were re-typed from the 1800's as well as original copies of 1920 books.
If i had a nickel for every story written by Ursawa that had a main character tirelessly examine old books in the middle of the night, I would have two nickels. which isn't a lot, but it is weird that it happened twice.