Can you point to someone who is saying that?
That is the most anemic argument to sue against Jesus statement that no man can know the day or hour.
Harold Camping, who ran Family Radio, which I like for its Christian music, was adamant that the end of the world would take place on May 21, 2011. I'm glad that it didn't, for if the world had ended on that day, I would have missed a really good USC-Notre Dame game the following October.
Incidentally, Camping had a heart attack shortly afterwards, and the Lord took him home.