Name sleep sessions by their start date

I would like to have the option to name sleep sessions by their start date, rather than their end date. Along with this feature, it would be great to backdate late sleep sessions, so that sessions which start between midnight and 9am are dated as the previous day.

I know many people prefer to name sleep sessions by their end date, and I understand the advantages of doing so. I prefer to name them by their start date, because that’s how I think of them in my mind. So, it would great to have the option to name their by either their end date or their start date.