title: how to get time zone of city or country in javascript
body: <p>I use <code>getTimezoneOffset()</code> to get the offset in minutes for a given date object. Is is possible to use javascript to get timezone offset of a city or a country?</p>
  
  <p>for example:</p>
  
  <pre><code>var offset = getCityOffset("Miami"); // returns -240
  </code></pre>