Group by day of the Month

Hello,

I'd like to know if there's a way to group in a Pivot Table items that fall on the same day each month by month

So for example:

Jan 1 - $100

Jan 14 - $15

Jan 26 - $40

Feb 1 - $80

Feb 14 - $150 (Valentine's Day afterall)

Feb 26 - $25

Now I want a chart showing:

1 - $180

   $100

   $80

14 - $165

   $15

   $150

26 - $65

   $40

   $25

Is this possible?  If so can anyone direct me on how to do this?

Thanks