Actually right now they don't have lights.
But I am assuming the aridness/dead nature of the landmasses is more than accidental, so perhaps you could explain the lack of lighting in that region to population dieout as a result of overpopulation. However, as this takes place fairly far into the future, I would suggest making amendments to the nightside lights. Assuming no major wars (as we can since the eastern seaboard of the US is fairly obviously intact), the American continent is going to be much more urbanized than that. Some lights in the oceans would be a plus too (sea colonies) but that's more of a personal choice.
Also, I couldn't help but notice that the earth shot you've got in the first post (with the moon) has earth illuminated from its north pole. Not to be overly critical, but that ain't gonna happen. It is an awesome shot, just rotate earth so that it isn't illuminated quite like that. Otherwise, I need a better jaw smily than I have ever seen to describe most of that stuff.