title: Twitter timezone & created_at (utc time) values to calculate what time zone the user is in
body: <p>I'm trying to estimate a twitter user's location based on the time_zone or created_at value in a given tweet object. However it seems that all created_at values I've come across are just in a pointless localised time and the time zone they supply isn't in the most helpful format</p>
  
  <p>example tweet</p>
  
  <pre><code>"created_at":"Thu Jun 02 14:41:24 +0000 2011"
  "time_zone":null
  </code></pre>
  
  <p>OR</p>
  
  <pre><code>"created_at":"Sun Jan 09 05:03:52 +0000 2011"
  "time_zone":"Mountain Time (US &amp; Canada)"
  </code></pre>
  
  <p>Both of these times aren't in UTC time and the time_zone isn't in any particular standard format with the rest of the world</p>
  
  <p>I'm probably coming across really annoying, I'm tired and hot and been looking for this solution for too long :|</p>
  
  <p>thanks,</p>
  
  <p>Andy</p>