He said none but the father know “the day or hour”. Those are very minute specific timeframes. What Jesus DOESN’T say is also full of meaning. He didn’t say “month” or “year” and he could have used language to imply we were totally in the dark but he didn’t. He also said “keep on the watch.” What would we keep on the watch for if we had no clue the general time when to be on the lookout? He said it would be in the “last watch of the evening” meaning late in the last days.