Before you decide to not post this question, PLEASE answer this question, because this is a serious issue, and I'm fed up with the normal only-at-night sleep schedule. And don't just decide to respond with "good god this must have taken ages to write" or anything off-topic. ANSWER the question, and tell all of us how you sleep/slept so unpredictably (sometimes in the daytime, sometimes at night),
i'm not seeing your argument that it is unpredictable. for example, look at the months. sometimes it's january. sometimes it's february. sometimes it's march. I think at one time or another, it has probably been every different month. Does that mean the months are unpredictable? maybe, but there is not sufficient evidence here