Who has Time for Space-Time

While watching a few minutes of some sci-fi series on spike in the breakroom at target, I came across a thought I hadn't previously considered.

If one was to develop a way to instantaneously travel through the time dimension (that's a big if of course), one might end up in the middle of space, or - depending on how much time they travel - one could even end up buried underground.

Its a pretty common notion, just one I haven't really considered until now. Because we know the earth is moving in the space dimension as it moves along in the time dimension. So basically make sure you have an understanding of the entire space-time continuum before you go and do anything stupid like invent instantaneous time travel.

Or at the very least, bring a spacesuit and a shovel for those emergency cases.