You can slide your vacation + or - 5 days into either month. Sounds like you have 10 days that you can slide +5 days and have 1 day hanging in December. That's a great way to spread your vacation over two months. As long as you have one day in December and at least 1 hour left in your bank, it's a valid day of vacation. There are two ways to maximize it:
1) Slide it right 5, use it to the max in November, then conflict with the December trip to get paid for that too. You will be in the hole, and at some point will have to make up but that can wait until next year.
2) Slide it right 5, try not to conflict with it to save the hours. You should be able to protect Thanksgiving that way. If you do conflict with it, you can do a vacation make up trip in November to plus up your bank (up to 6 hours over what you have). I would try to avoid conflicting with it to save the hours. That gives you 60 hours of vacation to use in December with that one day. Don't expand it in November, wait until December and expand it right to knock out 60 hours worth (+6, so 66 hrs) of vacation to hit trips in December and have them go away and get paid for them.
Hope this helps.
Jolly