Yes, you can override Print-content.php and modify the date format there, or what I did is add the following to my Child functions.php file:
add_filter ( 'wcdn_order_info_fields', 'update_wcdn_order_date_value', 10 , 2 ) ;
function update_wcdn_order_date_value ( $values, $order ) {
$wdn_order_id = ( version_compare( get_option( 'woocommerce_version' ), '3.0.0', ">=" ) ) ? $order->get_id() : $order->id;
$order_post = get_post( $wdn_order_id );
$wdn_order_order_date = ( version_compare( get_option( 'woocommerce_version' ), '3.0.0', ">=" ) ) ? $order_post->post_date : $order->order_date;
$values['order_date'] = array(
'label' => __( 'Order Date', 'woocommerce-delivery-notes' ),
'value' => date_i18n( __( 'l m/d/Y, h:ia', 'woocommerce' ), strtotime( $wdn_order_order_date ) )
);
return $values;
}
Results looks like:
Order Date Thursday 09/05/2019, 03:56pm
There might be a better way of doing it, I am always open for making improvements.