F*cked up sleep!

Aaaaaarrrggghhh!
Okay, here's the deal. I can't sleep when it's dark anymore. This whole house made an attempt the other day to fix our sleep cycles. So when we all stayed up until dawn we all continued staying up. The others ended up taking naps at some point in the day, but Nathan and I managed to stay awake until 6:30 pm and then we went to bed. A bit early maybe, but if we got up when the alarm went off then we would have gotten 12 hours of sleep, and after staying up so long I figured we might need it anyway. So Then I woke up at 2:30 am. Okay, that's fine, I'm just up a bit early. Four hours early isn't the end of the world. So what if I'm awake for the day at a time when I'd still be up for the previous night even with a semi normal sleep cycle. So I stayed up. Nathan got up a bit later and we had a nice breakfast and continued to have a rigorous and exhausting day. So nighttime rolls around again. Well, we don't have to go straight to bed at 10, right? We could stay up 'till about 12 and be fine. Apparently it doesn't matter how exhausting my day is. Sleep happens in the light and wakefulness in the dark, so I read and Nathan worked on the computer until 4:30 am!!! Then to make matters worse, neither of us got up until 5:30 pm!!!! The only reason I did is because I have a lot of work to do tonight. Nathan's still asleep! He says he's gonna try to sleep until tomorrow, but I just don't see it happening. So now my plan is to do my homework, got to walmart and get some sleeping pills. Take them no later than midnight. Sleep my medicated sleep until 6:30 am and begin my equally exhausting day that has no chance of ending any earlier than 4:00 pm, maybe not until 8:30. If this doesn't work (and it won't) does anybody else have suggestions? I'm stuck as a vampire here! I want to sleep like a person!