Usually, I go to bed quite late. I take my meds before sleep and have some symptoms and moods etc. which definitely belong to the previous day, so I have to put all of them at 23:59 of the previous day, or my statistics and insights would fail. So, I’d be happy to have a setting to shift the day start. Maybe at 6AM, so that you don’t have to recreate time periods for the symptoms and factors, just to move the first one to the end of the previous day.