Converta UTC para a resposta Phpadd local
// create a $dt object with the UTC timezone
$dt = new DateTime('2016-12-12 12:12:12', new DateTimeZone('UTC'));
// change the timezone of the object without changing its time
$dt->setTimezone(new DateTimeZone('America/Denver'));
// format the datetime
$dt->format('Y-m-d H:i:s T');
Smoggy Skipper