His weekend would include overnight, if he had his house ready. But he doesn't yet and still lives with his parents and for whatever reason he says he cannot have them overnight at his parents.
So on the nights he has the kids, his responsibilities include bringing them home and putting them to bed. I don't think I should have to come home early on 'his' nights to make sure they are ready for bed...that will change once he has his own home and it won't be an issue.