title: Tableau calculated field to subtract x hours
body: <p>I have the calculated field which takes a millisecond formatted time and converts it into a standard date - my question is its in GMT time - how do I subtract 5 HOURS off of this? </p>
  
  <pre><code>makedate(1970,1,1)+(int([last update dttm (FIELD NAME)]/1000))/(60*60*24)
  </code></pre>