title: Tableau how to convert a dimension into a datetime
body: <p>I'm using Tableau 9.0, I am trying to calculate service outage time.  I have 2 dimensions to work with -start time and an end time. When I look at the values they are in this format:</p>
  
  <p>Example:</p>
  
  <pre><code>Outage Start:       Outage End: 
  1452005400          1,452,011,400
  </code></pre>
  
  <p>Ideally I'd like to convert the current format to a datetime so that I work with it to find the outage time down to seconds.   </p>
  
  <p>Does any one know how I might go about this?</p>