Not exactly sure I understand the question, but since it is Nov 6th, 1 AM in your town, I'm guessing you wanted your town to be on Nov. 5, since that is when you last played?
Good news: If you're able to plot reset right now, you should still be good. Even though the calendar date is the 6th, the game doesn't really register a new day until 6 AM. You would be able to plot reset until then.
Bad news: If you wind up having to play after school (i.e., hours from now), your game will have officially turned over to the new day (the 6th). Since you are plot resetting, which requires a new character, you can't set your in-game clock. (Perhaps you could alter the 3DS clock itself to fix the date, but I never do that, so I don't know for sure.)