WooCommerce - change orders date format in the administration
<?php
add_filter( 'post_date_column_time' , 'woo_custom_post_date_column_time' );
/**
* woo_custom_post_date_column_time
*
* @access public
* @since 1.0
* @return void
*/
function woo_custom_post_date_column_time( $post ) {
$h_time = get_post_time( __( 'd/m/Y', 'woocommerce' ), $post );
return $h_time;
}