title: Find missing day from array of dates javascript
body: <p>I am getting an array of day dates from an API:</p>
  
  <pre><code>0:{date: "2016-11-17T00:00:00",…}
  1:{date: "2016-11-18T00:00:00",…}
  2:{date: "2016-11-19T00:00:00",…}
  3:{date: "2016-11-21T00:00:00",…}
  4:{date: "2016-11-22T00:00:00",…}
  5:{date: "2016-11-23T00:00:00",…}
  </code></pre>
  
  <p>In this example the array is missing this date:</p>
  
  <pre><code>{date: "2016-11-20T00:00:00",…}
  </code></pre>
  
  <p>What is the best way to find a missing day from an array of dates in Javascript or Angular? </p>
  
  <p>So that I later would be able to pass it to a datepicker as a disabled day.</p>