Plugin para destacar entrada en fecha específica

<?php

/*
* Version: 1.0
* Author: Yeltsin Reyes
* Plugin Name: Wp Update Post
* Description: Wp Update Post
* Plugin URI: https://tinyurl.com/YeltsinReyes/
* Author URI: https://tinyurl.com/YeltsinReyes/
*/

if(!defined('ABSPATH')){
    die('Invalid request.');
}

if(!class_exists('WpUpdatePost')){
 
    class WpUpdatePost {
  
        public function wp_update_post_cron(){
      
            wp_update_post([
                'ID' => 0000,
                'post_date' => current_time('mysql'),
                'post_date_gmt' => current_time('mysql')
            ]);
      
            wp_die();
      
        }
  
        public function __construct(){
            add_action('wp_ajax_wp_update_post_cron', array($this, 'wp_update_post_cron'));
            add_action('wp_ajax_wp_update_post_cron', array($this, 'wp_update_post_cron'));
        }
  
    }
 
    new WpUpdatePost();
 
}

?>