” no one knows the day or hour of His return “
That is pretty definitive.
No, we won’t know the day or hour, but we will know the season.
Yes, it’s definitive for the time that he said it. He said it before his Revelation. And if you don’t understand Jewish festivals, and specifically how the Feast of Trumpets begins, then you might also be fooled. Christ was a Jew, better start thinking like he did.