FR - new parameter for timestamp format between time and datetime

[septeven]

Hi, Great card, I love it, I use it for listing entity status history throughout the week. Would it possible to add a new timestamp format though ? I would need a format between the actual time and datetime. What I mean is, I would need a format that shows only time for the day's history of an entity, and datetime for the days before ...

Is that something you are willing to support? Thanks ;)