Where can I get a list of abbrvations for timeZoneWithAbbreviation?
<p>I'd like to do some timezone calculation, using the following API:</p>

<pre><code>NSTimeZone *some_time_zone = [NSTimeZone timeZoneWithAbbreviation:name];
</code></pre>

<p>however, I am not sure where to find the supported list of <code>abbreviation</code> names. For example, what is the <code>name</code> for the timezone of <a href="http://www.worldtimezone.com/time/wtzresult.php?CiID=14080&amp;forma=" rel="nofollow">Siena Italy</a>?</p>
