title: Convert Pandas Column to DateTime
body: <p>I have one field in a pandas DataFrame that was imported as string format. 
  It should be a datetime variable.
  How do I convert it to a datetime column and then filter based on date.</p>
  
  <p>Example:</p>
  
  <ul>
  <li>DataFrame Name: <strong>raw_data</strong>    </li>
  <li>Column Name: <strong>Mycol</strong>    </li>
  <li>Value
  Format in Column: <strong>'05SEP2014:00:00:00.000'</strong></li>
  </ul>