Ah, I misread your post about where the previous adventures had taken place, and thought you meant the NW continent that's shaped like a T, which is why I said something. The island to the southeast of the T-island's southern peninsula would (I think) be roughly a climate similar to that of Mid-Atlantic and/or Southeastern America. I don't remember my brief overlook exactly, though, and it was just brief, so don't quote me on that.

And I like the moon theory. I don't know much about the current theory for Earth, let alone theoretical applications for other planets, though, so I can't comment much on it, personally.

Also, I almost forgot, but if you haven't already, when you get to the stage of actually producing the in-universe maps, you should look at some of Naeddyr's work and tutorials. He seems to be one of our resident experts in that area.

-Asp