Am I wrong or what?

My husband gets upset whenever I go out. I rarely do. Maybe twice a month I will go hangout with my friends for a few hours. He does as well with his friends. We have different schedules though so when he goes out he can go out at like 6 and get back at 10 because he gets off work early in the day. I don't get off until 6ish and then I have to do homework with my son and get him ready for bed. After that's all done its about 8. So I usually leave by 9 and get home by 1130 or 12. He gets pissed when I get home so late but what am I supposed to do when I can't leave til 9? My son likes doing homework with me otherwise I would ask him to do it. I feel like I have a curfew almost. So should I stop going out once or twice a month or is he in the wrong? Ugh