title: Time format in momentjs that has number of day prefix
body: <p>How can we use momentjs for a time format that has a number of day part prefix?
  We can use:</p>
  
  <pre><code>moment("19:41:00", "HH:mm:ss");
  </code></pre>
  
  <p>What is the time format for:</p>
  
  <blockquote>
    <p>28.19:41:00</p>
  </blockquote>
  
  <p>Thanks for helping.</p>