title: Some dates recognized as dates, some dates not recognized. Why?
body: <p>Here is a list of dates:</p>
  
  <p>04-22-11<br>
  12-19-11<br>
  11-04-11<br>
  12-08-11<br>
  09-27-11<br>
  09-27-11<br>
  04-01-11 </p>
  
  <p>When you copy this list in Excel, some of them are recognized as dates, others not, in the following manner:</p>
  
  <p>04-22-11<br>
  12-19-11<br>
  11-04-11 (date)<br>
  12-08-11 (date)<br>
  09-27-11<br>
  09-27-11<br>
  04-01-11 (date)  </p>
  
  <p>Does anyone know why? And how to force Excel to recognize all list items as dates?</p>
  
  <p>Many thanks!</p>