@aral I remember a story by some French author (Marcel Aymee?). It starts in '40s -- WW2 is at its top, both sides still believe in victory, but it is clear, that it'd take much time and much cost. So, on a secret meeting on neutral ground, a plan is born: this time, let's shift not only mere hour, but twenty years -- it would be surely after the war by then.
Then, in '60s, protagonist gets to some remote French village, that apparently did not get the news -- there are still '40s and German occupation. He manages to escape and come back to Paris -- but it's still occupied Paris...