The reason time travel movies don't make sense, while absolutely lots of fun to watch, is because the Sun is travelling through space. If you were to hypothetic

The reason time travel movies don't make sense, while absolutely lots of fun to watch, is because the Sun is travelling through space. If you were to hypothetically build a time machine and set it for any given year, you would materialize in a hard vacuum. So, you need more than a time machine, you also need a spacecraft to be able to fly to where the Earth's previous position is. Chemical propulsion won't do it, you need something with significant velocity and energy. Unless of course, you are able to enter specific astronomical coordinates to appear in and match velocities. Would suck if you got the coordinates right, but were off on the velocity by 1000 km/hr.