Dates on Horizontal Axis Cross Chart Area Border

On an X-Y scatter chart I have dates in the mm/dd/yyyy format aligned vertically on the horizontal axis so they don't run over each other. But they fall off the edge of the chart area. A picture is attached in a Word 2007 file.

I can use a work around of removing the chart area boundary line and fill, but I feel like I'm missing something and shouldn't have to do that.

Is there a margin on the chart area somewhere that I can set?

Using Excel 2007.

Thank you.