December 14, 2033 – Stuart tries to meet the gang outside of their apartment building for a dinner date planned exactly twenty years before. No one, but Stuart shows up. * It is entirely possible that Sheldon or Leonard may in the future devise a method of time-travel, to fulfil the condition of the Roommate Agreement that dictates their first use of it is to go back exactly in time to the point where they first signed that clause of the Agreement thus creating an alternate timeline.