Ah yes, it's taken straight from the DB:
/var/www/fusionpbx/app/xml_cdr/xml_cdr_inc.php
$sql .= "to_char(timezone(:time_zone, start_stamp), 'DD Mon YYYY') as start_date_formatted, \n";
$sql .= "to_char(timezone(:time_zone, start_stamp), 'HH12:MI:SS am') as...