"payment processing"

This obviously has nothing to do with anything of your usual on here. But i have a question and concern and I will definitely call the bank # but i feel like it's a dumb question.

I'm paying off my car loan with PNC. It was due on the 15th, so i made the payment the 13th, online, before the cut off time. It's the 16th today, and it's still processing so the money hasn't even been taken out of my account. Is it a late payment now? This is my 2nd payment altogether since I just got the car.