He's not wrong about us being in the last days.
Where he's gone wrong is predicting the day and hour, which Jesus clearly said nobody knew.
He did for sure. There are a couple of caveats on that however. He did say we would know the season. Also if we study the traditional Jewish wedding we begin to understand the statement “only the Father knows”. In a Jewish wedding the groom “goes to prepare a place” for his new wife. It’s the father who understands what is needed to complete that prepared place and it is he who tells the son he is ready. So when the groom is asked when the wedding is going to be he answers and says “only my father knows”.