My house is quietest in the late afternoon and early evening, so I moved my main phase of sleep to 6pm. I am the only person who has to be up in the morning, so I am being flexible. That is why I wasn't mad when at 1:21am an extended revenge/torture movie with uncharacteristically slow and dull dialogue woke me up. I just put on music and made my dinner. And, now I don't have to feel bad about setting alarms in quarter hour increments from 5:45 on, even though realistically I am never going to get up before 6:30. Yesterday, nothing woke me in the middle of the night so I slept for 11 hours.