If you mean that the psychotic symptoms come in "bursts", then yes, and I experience that as well. However, not in "day or night" terms, but in "bursts", I could say.

Also, even if you do self-diagnose... I have gathered from the mental health professionals who have treated me that it is a good sign. Probably because the sooner you realise you're "psychotic" the sooner you can work on getting better from it.

I'm not sure myself, but these are just a few thoughts that came to my mind. Hope you find answers or more questions (always a good thing) on this forum.