In 1921, he flew from the Great Rift Valley all the way back to England where he discovered that it had been a mistake, he was meant to be in France, 1945. Time travelling isn't as accurate as all that.
Perhaps he would ought to do something a bit different for a change. Go back home. See what changes have been made. Would it be recognisable?
Jack the Ripper decided to return Whitechapel. 1888. London.