title: Customizing the WP Schedule event
body: <p>Experts,</p>
  
  <p>Currently in one of my wordpress plugins there is a cron which runs as per schedule below.
  wp_schedule_event( time(), 'hourly', 'w4pr_cron' );
  I would like to change this to run every 5 minutes in a particular time range.</p>
  
  <p>For E.g. The current code as you know will run once every hour in a day. (24 runs in a day). 
  I would like this to run every 5 minutes between 5:00am and 6:30am (EST) only (18 runs in a day).</p>
  
  <p>Any help appreciated!</p>
  
  <p>Thanks
  Thomas</p>