title: How to compare dates using perl?
body: <p>How can i compare two dates in the format using Perl:</p>
  
  <pre><code>"dd mon yyyy hh:mm:ss GMT"
  </code></pre>
  
  <blockquote>
    <p>e.g.: 12 May 2013 10:10:20 GMT</p>
  </blockquote>
  
  <p>I cannot install any external Perl modules.
  Please advice.</p>