Anyway, I won't make it cuz:
Maybe you will, because some add on automatically after 24hrs. If you made just 1 post at this time last night, it will be added to your 8 left.
You can't rely on what it says as for when you can make more posts. Often it says I can't make a thread before a couple of hours, and then a few minutes later I can....
You can only rely on the number of posts it says you have left. But like I said, you might get a couple more if you posted yesterday at this time.