title: Why Rails provides less number of time zones support?
body: <p>There are more than 230 time zones in the world.</p>
  
  <p><a href="http://en.wikipedia.org/wiki/List_of_time_zones_by_country" rel="nofollow">http://en.wikipedia.org/wiki/List_of_time_zones_by_country</a></p>
  
  <p>But Rails supports only 142 time zones.</p>
  
  <pre><code>ActiveSupport::TimeZone.all.count
  =&gt; 142 
  </code></pre>
  
  <p>1.Does it means Rails time zone support is limited?</p>
  
  <p>2.Is there any specific reason to skip the remaining time zones?</p>
  
  <p>Thank you folks.</p>