Error display day name

[stefhf]

http://www.stefanocolombo.com/public/meteo/index.php

The page has an error
the display of the name of the day
as attached picture

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<!--  This show current date, format: Monday, 1 may 2012  -->
              <?php echo $dayname.', '.$day.' '.$monthname.' '.$year; ?>
            </p>
                  <p style="text-align: center">Last read at <?php echo $timehhmmss; ?></p>
               </div>
               <div class="pan forec">
                  <h2><?php echo $Tr_forecast; ?></h2>
                  <img src="style/forecast/forecast_<?php echo $isdaylight.'_'.$forecastnumber; ?>.png" style="padding: 35px 0px 10px 75px" alt="<?php echo $Tr_forecast.': '.$forecast; ?>" title="<?php echo $Tr_forecast.': '.$forecast; ?>" />
                  <p style="text-align:center">Forecast image<br /><em>(next 12 hours)</em></p>
               </div>
               <div class="pan night" style="margin-bottom:5px;">
                  <h2><?php echo $Tr_moonphase; ?></h2>
                  <img src="images/moon.bmp" style="padding: 50px 0px 52px 120px" alt="Forecast icon" title="Forecast icon" />
                  <p style="text-align:center">Phase : <strong><?php echo $moonphase; ?></strong><br />
                  <?php echo $Tr_MoonPercent; ?> <strong><?php echo $MoonPercentAbs; ?>%</strong></p>
               </div>
            </div>
            <div style="clear: both"></div>
         </div>
      </div>
    <!-- content ends -->

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Lunedì (Monday)

who can help me
thanks