Is November too late to take the SAT II for ED/EA?

I want to apply ED to Cornell, but the only feasible time for me to take my SAT Subject Tests is in November of my senior year (I'm retaking the regular SAT on the October test date). Is this too late? Or will Cornell get my scores in time?

You can take the SAT II in November, but there will still be some risk of your scores not arriving in time. From the Cornell Admissions Office:

"November scores will usually be received in time, but there is no guarantee that they will arrive before your application is considered. "

If you choose to take subject tests in November, you should indicate during registration that you want to send one of your four free score reports to Cornell. Don't wait until you get your scores back to send a report because it will probably be too late.