ปฏิทิน เดือนพฤศจิกายน หายไปจากระบบค่ะ มีใครเคยเป็นบ้างไหมค่ะ

<?
$now = strtotime("now");

if(isset($_GET['now']) && !empty($_GET['now'])){
 $now = $_GET['now'];
}

$month = date('n',$now);
$year = date('Y',$now);
$first = strtotime("$year-$month-1");
$first_day = date('w',$first);
$num_day = date('t',$now);
$today = date("Y-n-j");
$TH_Day = array("อา.","จ.","อ.","พ.","พฤ.","ศ.","ส.");
$TH_Month = array(1 => "มกราคม","กุมภาพันธ์","มีนาคม","เมษายน","พฤษภาคม","มิถุนายน",
"กรกฏาคม","สิงหาคม","กันยายน","ตุลาคม","พฤศจิกายน","ธันวาคม");
$TH_Year = $year+543;

$class = "default";

//$url_togo = $_SERVER['PHP_SELF'] . "?now=";
$last_month = strtotime("-1 month $year-$month");
$next_month = strtotime("+1 month $year-$month");

$url_lastMonth = "<a href=\"javascript: calendar($last_month )\" class=\"a\">&laquo; เดือนก่อนหน้า</a>";
$url_nextMonth = "<a href=\"javascript: calendar($next_month )\" class=\"a\">เดือนถัดไป &raquo;</a>";

$mk_calendar = "<table width=\"770\" border=0 cellspacing=1 cellpadding=7 bgcolor=#0177c7 >
<tr>
 <th>$url_lastMonth</th>
 <th colspan=5 class=\"white\" >$TH_Month[$month]  $TH_Year</th>
 <th> $url_nextMonth</th>
</tr>
<tr bgcolor=#f9f9d6><th class=\"blue\" >" . implode("</th><th class=\"blue\">",$TH_Day) . "</th></tr>";

$start = 1 - $first_day;
$w = 1;
for($d = $start; ;$d++){
 $link="";
     $class = "default";
     $date = "$year-$month-$d";

     if($w == 1){
          $class = "sunday";
          $mk_calendar .= "<tr align=center class=$class>";
     }else if($w == 7){
          $class = "saturday";
     }else{
          $class = "default";
     }

     if($d < 1){
          $mk_calendar .= "<td class=$class>&nbsp;</td>";
     }else if($d >= $num_day){
          if($d == $num_day){
                 $query_room=mysql_query("SELECT * FROM room ");
					while($arr_room=mysql_fetch_array($query_room))
					{
						if($arr_room['startdate']==$date){
						$class ="rooms";
						$link="<a href=\"index.php?date=$date\" class=\"room\">";
						}
       					 if($today == $date){
						   $class = "today";
						 	if($arr_room['startdate']==$date){
						 		$link="<a href=\"index.php?date=$date\" >";
         					}
						}
                 }
                 $mk_calendar .= "<td align=center class=$class>$link$d</td>";
         }else{
                 if($w == 7){
                        $class = "saturday";
                 }else{
                        $class = "default";
                 }
                 $mk_calendar .= "<td class=$class>&nbsp;</td>";
        }
        if($w == 7){
             $mk_calendar .= "</tr>";
             break;
        }
    }else{

					$query_room=mysql_query("SELECT * FROM room ");
					while($arr_room=mysql_fetch_array($query_room))
					{
						if($arr_room['startdate']==$date){
						$class ="rooms";
						$link="<a href=\"index.php?date=$date\" class=\"room\">";
						}
       					 if($today == $date){
						   $class = "today";
						 	if($arr_room['startdate']==$date){
						 		$link="<a href=\"index.php?date=$date\" class=\"room\" >";
         					}
						}
						  }
        				 $mk_calendar .= "<td align=center class=$class  width=\"110\">$link$d</a></td>";
  		  }
		

    if($w == 7){
        $mk_calendar .= "</tr>";
        $w = 1;
    }else{
        $w++;
    }

}
$mk_calendar .= "</table>";

header("content-type: text/html; charset=tis-620");
echo $mk_calendar;
?>