Ok, so I did a thing (not intending to test this, but did) and figured it out. So there is a definite south facing. The ONLY way to change the apparent direction you will exit is to rotate the plot. Yeah, that's what I said, the actual plot. So if you have already built the base, then short of some sort of new fix, then you'll basically have to deal with it or risk some major editing (depending on how you started things off).