Order date-time in customer processing order email notification

//Order date-time in customer processing order email notification
add_action( 'woocommerce_email_order_details', 'custom_processing_order_notification', 1, 4 );
function custom_processing_order_notification( $order, $sent_to_admin, $plain_text, $email ) {
// Only for processing email notifications to customer
if( ! 'customer_processing_order' == $email->id ) return;

$date_modified = $order->get_date_modified();
$date_paid = $order->get_date_paid();

$date = empty( $date_paid ) ? $date_modified : $date_paid;

echo sprintf( '<p>A rendelés száma: %s <br>A rendelés dátuma: <time>%s</time>)</p>',
$order->get_order_number( ),
$date->date("Y.m.j.")
);
}