title: How to set the timezone on NSDateComponents
body: <p>I'm trying to encapsulate a time using a <code>NSDateComponents</code>..but it give me 1979-05-10 08:30:00 +0000....what value should set for <code>setTimeZone:</code> to give me the Houres in my local time (GMT+2) which should be 1979-05-10 10:30:00 +0000</p>
  
  <pre><code>NSDateComponents *comp = [[NSDateComponents alloc] init];
  [comp setYear:1979];
  [comp setMonth:5];
  [comp setDay:10];
  [comp setHour:10];
  [comp setMinute:30];
  [comp setTimeZone:];
  </code></pre>