title: Convert local time (10 digit number) to a readable datetime format
body: <p>I'm working with pbx for voip calls. One aspect of pbx is that you can choose to receive CDR packages. Those packages have 2 timestamps : "utc" and "local", but both seem to always be the same.</p>
  
  <p>Here's an example of a timestamp : "1268927156".</p>
  
  <p>At first sight, there seems to be no logic in it. So I tried converting it several ways, but with no good result. That value should provide a time around 11am (+1GMT) today.</p>
  
  <p>Things I tried:</p>
  
  <ul>
  <li>Datetime dt = new Datetime(number);</li>
  <li>Timespan ts = new Timespan(number);</li>
  <li>DateTime utc = new DateTime(number + 504911232000000000, DateTimeKind.Utc)</li>
  </ul>
  
  <p>and some others I can't remember right now.</p>
  
  <p>Am I missing something stupid here?</p>
  
  <p>Thanks in advance</p>