https://www.webmd.com/diabetes/dawn-phenomenon-or-somogyi-effect Not the best reference, but I got there by looking up "extended dawn phenomenon". I looked that up because I seem to have a 3 phase 24 hour BG cycle. 06:00 to 14:00 climb to mild hyper (extended DP?) 14:00 to 24:00 drop to mild hypo 24:00 to 06:00 minor rebound then slow climb Has anyone else got/encountered this? I will be chasing up other references because the link above isn't very helpful. @HSSS for heads up as well.