You mean all the wrong dates have been proven wrong because those dates have come.
Do you believe that If I said that Jesus will return tomorrow and did that each day for the rest of my life that it would always have to be wrong because it was wrong in the past? That is why such statements fail logic.
Actually, if your using Jesus words to say that no one can know the day and hour then you would be using His words in error. He stated the verse in the Perfect Tense which is a form of present tense where an event has happened and the results are still the same presently when He made the statement.
Already addressed this in my earlier post since I knew others would post it. So I'm just going to copy and paste here from that post:
Let's look at verse so often quoted without many understanding their meaning:
Mat 24:36 But of that day and hour knoweth no man, no, not the angels of heaven, but my Father only.
Mat 24:37 But as the days of Noe were, so shall also the coming of the Son of man be.
The first mistake people do with verse 36 is say that it means no one CAN know. But that is NOT what the verse says. It has a single verse in verse 36 for "knoweth" and that verse is in the PERFECT tense which is a form of PRESENT tense.
You see if Jesus didn't use the Tense in the Future tense then why is everyone else? That is teaching in error.
It says that it would be as it was in Noah's day. Noah knew the day that He would enter the Ark beforehand. Noah knew when the floods would come BEFORE they came.