Something

    $startdate = strftime("%Y-%m-%d %H:%M", $monday);

    $sunday = strtotime("+6 days", $monday);
    $enddate = strftime("%Y-%m-%d %H:%M", $sunday);


    $sql = "select *, unix_timestamp(received) as receivedepoch from calendar where received between '{$startdate}' and '{$enddate}' order by received";
    $res = mysql_query($sql);
    while ($row = mysql_fetch_assoc($res))
    {
      $date = strftime("%m/%d", $row["receivedepoch"]);
      $d = intval(strftime("%u", $row["received"]));
 
        $currentday = $row["received"];
        print strftime("<h2>%A</h2>", $row["receivedepoch"]) . "<br />";
      
      print "&bull; {$date} <font color='#FF00FF'>Event: </font><a href='events.php?mode=view&amp;id={$row[id]}'>{$row[title]}</a> <font color='#FF00FF'>Type:</font> {$row[event_type]} <font color='#FF00FF'>price: </font>{$row[price]}<br />\n";
    }
    print <<<KEY
<div>