title: run cron at last day of the month using node cron
body: <p>I am using node cron to run the cron every last day of the month</p>
  
  <pre><code>var job = new CronJob('01 01 12 * * *', function() {
      //my function to do job
   }, function () {
  
   }, true);
  </code></pre>
  
  <p>so what time I should set so that the script run every last day of the month</p>