<?PHP
 
 
	$wk = strtotime ("first saturday may 2009");
 
	if ($wk == false) {
		echo "<br>Not able to interpret the string ";
		exit;
	}
 
	$sat2	= $wk + (3600*24*7);				// add seven days  (in seconds)
 
	$sat4	= $sat2 + (3600*24*14);				// add 14 days
 
	$wk2 = date ("Y-m-d",$sat4);
 
	echo $wk2;
 
?>

$today=date('Y-m-d');// for example today is 2009-04-06
$newdate=strtotime ($today);// converted to strtotime
 
$newdate1= $newdate+ (3600*24*7);	// add 7 days
$newdate2= $newdate+ (3600*24*14);	// add 14 days
 
$day= date ("D",$newdate1); // DAY after 7 days
$day2= date ("D",$newdate2); // DAY after 14 days
 
echo "after 7 days the Day will be.".$day;
echo "after 14 days the Day will be.".$day2;

 
$mysat=1;
$current_year=date('Y');
$current_month=date('m');
 
for($i=1; $i<=31; $i++)
{
$mydate=$current_year."-".$current_month."-".$i;
$newdate=strtotime ($mydate);
$saturday= date("w",$newdate);//Numeric representation of the day of the week  . 0 (for Sunday) through 6 (for Saturday)
 
	       if($saturday==6)
	        {
				if($mysat==2)
				{
				echo "<br>my 2nd saturdays is--".$mydate;
				}
				if($mysat==4)
				{
				echo "<br>my 4th saturdays is--".$mydate;
				}
	        $mysat+=1;
	        }