Date AND time Added

How can I sort my collection in date and time added?

I don't understand why when I sort on dat added it doesn't do the time as well

This is frustrating me as I am adding folders of music and then creating a playlist from those folders

the problem is of course when I add a new folder it is not the last files added as they are all spread out amongst the music I've already added

This seems like a simple thing to fix but I cannot work it out

Any help greatly appreciated

;o)