DOB in JOIN FIELDS

Does anyone know how we can get the DOB in the JOIN FIELDS (DATE) to display in this format?  MM/DD/yyyy?

Go to Administration -> Settings -> Advanced Settings -> Variables

I don't remember which field(s) affected the DOB one, but I think it was the PHP date format. Mine is set as 'F j, Y' (reference here: http://php.net/manual/en/function.date.php)

If it's not that, my short date format for code is 'm.d.Y' and short date format for DB is '%m.%d.%Y'.

I went through and changed all of them, as my users are all US based and dd-mm-yyyy threw them all off!