Just add a column that calculates the days:
Sheet1
<TABLE style="PADDING-RIGHT: 2pt; PADDING-LEFT: 2pt; FONT-SIZE: 11pt; FONT-FAMILY: Calibri,Arial; BACKGROUND-COLOR: #ffffff" cellSpacing=0 cellPadding=0 border=1><COLGROUP><COL style="FONT-WEIGHT: bold; WIDTH: 30px"><COL style="WIDTH: 83px"><COL style="WIDTH: 83px"><COL style="WIDTH: 64px"><COL style="WIDTH: 83px"><COL style="WIDTH: 83px"><COL style="WIDTH: 68px"></COLGROUP><TBODY><TR style="FONT-WEIGHT: bold; FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center"><TD> </TD><TD>B</TD><TD>C</TD><TD>D</TD><TD>E</TD><TD>F</TD><TD>G</TD></TR><TR style="HEIGHT: 18px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">1</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; TEXT-ALIGN: right">1/1/2009</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; TEXT-ALIGN: right">3/31/2009</TD><TD style="TEXT-ALIGN: right"> 90.00 </TD></TR><TR style="HEIGHT: 18px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">2</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; TEXT-ALIGN: right">4/1/2009</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; TEXT-ALIGN: right">6/30/2009</TD><TD style="TEXT-ALIGN: right"> 91.00 </TD></TR><TR style="HEIGHT: 18px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">3</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; TEXT-ALIGN: right">7/1/2009</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; TEXT-ALIGN: right">9/30/2009</TD><TD style="TEXT-ALIGN: right"> 92.00 </TD></TR><TR style="HEIGHT: 18px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">4</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; TEXT-ALIGN: right">10/1/2009</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; TEXT-ALIGN: right">12/31/2009</TD><TD style="TEXT-ALIGN: right"> 92.00 </TD></TR><TR style="HEIGHT: 18px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">5</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD> </TD></TR><TR style="HEIGHT: 18px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">6</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD> </TD></TR><TR style="HEIGHT: 18px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">7</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD> </TD></TR><TR style="HEIGHT: 18px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">8</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD> </TD></TR><TR style="HEIGHT: 18px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">9</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD> </TD></TR><TR style="HEIGHT: 18px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">10</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD> </TD></TR><TR style="HEIGHT: 18px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">11</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD> </TD></TR><TR style="HEIGHT: 18px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">12</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana">User Date</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana">Days Remain In Qtr</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana">Days in Qtr</TD><TD> </TD></TR><TR style="HEIGHT: 19px"><TD style="FONT-SIZE: 8pt; BACKGROUND-COLOR: #cacaca; TEXT-ALIGN: center">13</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; TEXT-ALIGN: right">9/18/2009</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana"> </TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; TEXT-ALIGN: right">39</TD><TD style="FONT-SIZE: 10pt; FONT-FAMILY: Verdana; TEXT-ALIGN: right">9/30/2009</TD><TD> </TD></TR></TBODY></TABLE>
<TABLE style="FONT-SIZE: 10pt; BORDER-LEFT-COLOR: #00ff00; BORDER-BOTTOM-COLOR: #00ff00; COLOR: #000000; BORDER-TOP-STYLE: groove; BORDER-TOP-COLOR: #00ff00; FONT-FAMILY: Arial; BORDER-RIGHT-STYLE: groove; BORDER-LEFT-STYLE: groove; BACKGROUND-COLOR: #fffcf9; BORDER-RIGHT-COLOR: #00ff00; BORDER-BOTTOM-STYLE: groove"><TBODY><TR><TD>Spreadsheet Formulas</TD></TR><TR><TD><TABLE style="FONT-SIZE: 9pt; FONT-FAMILY: Arial" cellSpacing=0 cellPadding=2 border=1><TBODY><TR style="FONT-SIZE: 10pt; BACKGROUND-COLOR: #cacaca"><TD>Cell</TD><TD>Formula</TD></TR><TR><TD>E1</TD><TD>=DATE(YEAR(C13),1,1)</TD></TR><TR><TD>F1</TD><TD>=EOMONTH(E1,2)</TD></TR><TR><TD>G1</TD><TD>=(F1+1)-E1</TD></TR><TR><TD>E2</TD><TD>=DATE(YEAR(C13),4,1)</TD></TR><TR><TD>F2</TD><TD>=EOMONTH(E2,2)</TD></TR><TR><TD>G2</TD><TD>=(F2+1)-E2</TD></TR><TR><TD>E3</TD><TD>=DATE(YEAR(C13),7,1)</TD></TR><TR><TD>F3</TD><TD>=EOMONTH(E3,2)</TD></TR><TR><TD>G3</TD><TD>=(F3+1)-E3</TD></TR><TR><TD>E4</TD><TD>=DATE(YEAR(C13),10,1)</TD></TR><TR><TD>F4</TD><TD>=EOMONTH(E4,2)</TD></TR><TR><TD>G4</TD><TD>=(F4+1)-E4</TD></TR><TR><TD>F13</TD><TD>=VLOOKUP(C13,$E$1:$G$4,2)</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>