Site launch timer

/* Set default timezone for the site */
date_default_timezone_set('Asia/Calcutta');
$curtime = mktime();
/* mktime (hour, minutes, seconds, month, day, year) */
$reqtime = mktime(9,50,0,12,11,2009);
$msg = "SITE IS UNDER CONSTRUCTION";
if ( $curtime < $reqtime )
{
  echo $msg;
  return;
}