Change order of custom post type on admin edit.php screen

admin.php

/*
 * Change order of custom post type on admin edit.php screen from name to date
 * https://codex.wordpress.org/Plugin_API/Action_Reference/pre_get_posts
 */

function ptc_admin_order( $wp_query ) {
  if (is_admin()) {
    $post_type = $wp_query->query['post_type'];

    if ( $post_type == 'ptc_clients' || $post_type == 'ptc_proposals' ) {
      $wp_query->set('orderby', 'date');

      
    }
  }
}
add_filter('pre_get_posts', 'ptc_admin_order');

admin02.php

/*
 * Change order of custom post type on admin edit.php screen from name to date
 * https://codex.wordpress.org/Plugin_API/Action_Reference/pre_get_posts
 */

function ptc_admin_order( $wp_query ) {
  if (is_admin()) {
    $post_type = $wp_query->query['post_type'];

    if ( $post_type == 'ptc_clients' || $post_type == 'ptc_proposals' ) {
      $wp_query->set('orderby', 'date');

      //If you set the order to desc the colun is not sortable
      $wp_query->set('order', 'DESC');
    }
  }
}
add_filter('pre_get_posts', 'ptc_admin_order');