How to display formatted date as wrapped text

So, if I have "1/2/2010" in a cell, I want to display is as:

Sat
Jan
2

which is vertically wrapped to three cells.

I can use a custom format "ddd mmm dd" which displays the text I want, but doesn't wrap to the next cells, even if I shrink the width of the column (I get "###"). Choosing to wrap and/or merge cells doesn't seem to make any difference.

Is there a code I can include in the formatting string to force a line feed or wrap?

Thanks,
Heath