I really advice you to use Carbon PHP library. It is included into Eloquent, you have just to define the date (or datetime, or time) field in your database in your model class:
class Order extends Model
{
protected $dates = [
'date',
'created_at',
'updated_at'
];
/**/
}
In this way you will directly get from your queries a object of Carbon Class, and so:
$order->date->toDateTimeString(); //2016-10-14 12:17:51
And make it easy :)