title: How to add a millisec of time to this epoch?
body: <p><code>1474148715</code> According to <a href="http://www.epochconverter.com/" rel="nofollow noreferrer">epochconverter</a> it's: <code>GMT: Sat, 17 Sep 2016 21:45:15 GMT</code></p>
  
  <p>Trying <a href="http://momentjs.com/guides/" rel="nofollow noreferrer">momentJS</a>, but no luck:</p>
  
  <p><code>const startMomentized = moment(Date($state.params.start_epoch)).add(1, 'milliseconds').unix();</code></p>
  
  <p>^ This gives me the date: <code>GMT: Thu, 09 Feb 2017 19:39:43 GMT</code> instead of the date in Sep 2016, I'm trying to have.</p>
  
  <hr>
  
  <p>Hoping for something like the following:</p>
  
  <pre><code>var start = params.start_epoch;
  var startUpdated = start+millisec;
  </code></pre>