Time Issue In CI 2.0.2

[eluser]aataqwa[/eluser]

Code:

$date = date('Y-m-d H:i:s',now());

echo $date;

return : 2011-09-06 06:50:10
time in local server: 2011-09-06 13:50:10

in file config.php >> $config['time_reference'] = 'local';

how to solve the problem so that same hour by hour local server ??