title: How to schedule job with a particular time as well as interval?
body: <p>Using python's schedule module how can I start a job at particular time and thereon it should be scheduled at regular intervals.</p>
  
  <p>Suppose I want to schedule a task every 4 hours starting from 09:00 am.</p>
  
  <p><code>schedule.every(4).hours.at("09:00").do(task) # This doesn't work</code></p>
  
  <p>How to achieve the above?</p>