title: Setting time zone of a Pandas Timestamp to Boise
body: <p>I want to read in a unix time into a timestamp and assign the timezone of Boise. Current timezone there is "MDT – Mountain Daylight Time (Daylight Saving Time)". It will switch to MST during winter time. </p>
  
  <p>What is the right timezone to use, when I want want to have it not dependent on summer / winter time?</p>
  
  <p>I want to have something like this</p>
  
  <pre><code>pd.Timestamp(1513393355, unit='s', tz='US/Pacific') 
  </code></pre>