title: C++ Convert time ET to CET or something else
body: <p>I'm parsing files with date and time in it.
  Let's say i have the date and time in the following format:</p>
  
  <pre><code>2009/07/18 10:48:39 CET (value in txt-file)
  </code></pre>
  
  <p>This is in ET:</p>
  
  <pre><code>2009/07/18 4:48:39 ET (could also be the value i parsed)
  </code></pre>
  
  <p>Is there a solution to convert between the times/dates? Maybe boost? </p>
  
  <p>Couldn't find helpful infos in the boost docs.</p>
  
  <p>Let's say i want to from CET to ET or ET to EST or CET to EST in c++, what would you do?</p>