title: Format hours, minutes and seconds with moment.js
body: <p>I get this value from my backend service: <code>171054</code>. It represents <code>hh:mm:ss</code>. But when I use the formatting options from the docs it gives me back <code>00:00:00</code>. </p>
  
  <p>Things I've tried: </p>
  
  <pre class="lang-js prettyprint-override"><code>moment('171054').format('hh-mm-ss')
  moment('171054').format('HH-mm-ss')
  moment('171054').format('HH-MM-SS')
  </code></pre>