Due largely to the fact that my girlfriend's going out of town and I want to spend as much time as possible with her, I'm declaring this a skip week for Worldbuilding for Writers, Gamers and Other Creatives. I'll be back next week, when we'll address the rotational period (day) of your planet.
Meanwhile… I'm assuming (optimistically) that if you've been reading this series, you're building a world of your own. Share it with everyone… in the comments!