title: Simple Date format gives wrong info from epoch timestamp
body: <p>I found that this gives a wrong date. but how i can not solve it. please someone help me.
  I am new in android Development.
  Thanks in advance;</p>
  
  <p>String timestamp = "1538970640";</p>
  
  <pre><code>SimpleDateFormat formatter = new SimpleDateFormat("dd MMM 'at' hh:mm a z" );
  String dateString = formatter.format(new Date(Long.parseLong(timestamp)));
  </code></pre>
  
  <p>This returns:</p>
  
  <pre><code>19 Jan at 01:29 AM GMT+06:oo
  </code></pre>
  
  <p>But it should be:</p>
  
  <pre><code>8 Oct at 9:50 AM GMT+06:00
  </code></pre>