title: Apache POI Event user model reads Timestamp value as a double
body: <p>I have an excel file where there is a timestamp column filled in with value
  5/31/2011  5:49:44 PM
  I am reading this excel file using POI Event Model. (the implementation is same as explained at <a href="http://poi.apache.org/spreadsheet/how-to.html#sxssf" rel="nofollow">http://poi.apache.org/spreadsheet/how-to.html#sxssf</a> - "XSSF and SAX (Event API)")
  The above timestamp value is read as 40694.74287037037 and I do not know why.
  I am unable to format this value back to the Date-Time format.</p>
  
  <p>How do I fix this issue?</p>