title: How to get the time zone abbreviation from Time.now?
body: <p>Time.now.strftime('%Z') returns 'Mountain Daylight Time' for me. I'd like to get MDT.</p>
  
  <p>What's the correct way to get the time zone abbreviation?</p>
  
  <p>Just in case anyone suspected I was misleading them:</p>
  
  <pre><code>irb(main):001:0&gt; Time.now.strftime('%Z')
  =&gt; "Mountain Daylight Time"
  irb(main):002:0&gt; Time.now.zone
  =&gt; "Mountain Daylight Time"
  irb(main):003:0&gt; Time.now.in_time_zone('Mountain Time (US &amp; Canada)').zone
  =&gt; "MDT"
  </code></pre>