Wasn't me that takes it at night. I take it around 11am, no special reason, just fits in with my routine that way. When I was higher dosing I took it 3x a day (morning, noon, & night).
You have got me thinking though. I don't sleep well, getting up several times a night. I have noticed that I have slept much better the last two nights and the last two days I increased my dose again. I think I will try and take it at night, because I would really like to sleep till morning. I take it in ACV, cold. Wonder what it would be like heated up?