I was thinking something like this:
User: 0000-1111-2222-3333 - Submitted on [Time] [Date]
Or invert [Time] [Date] so it does [Date] [Time] after.
Though, using the calendar object's Selected Date$ does something like this: 12-05T14:47:56 Which is also good. Just that the time here does NOT update for whatever reason. Maybe I am using the wrong expression.