title: Saving to CSV in Excel loses regional date format
body: <p>I have a .xls I need to convert to .csv</p>
  
  <p>The file contains some date columns. The format on the date is "*14/03/2001" which, according to Excel means the date responds to regional date and time settings specified for the OS.</p>
  
  <p>Opening in Excel you see:</p>
  
  <pre><code>20/01/2013
  01/05/2013
  </code></pre>
  
  <p>Save as... CSV</p>
  
  <p>Open in notepad:</p>
  
  <pre><code>01/20/2013
  05/01/2013
  </code></pre>
  
  <p>I have temporarily fixed by setting date formats to "14/03/2001" (no *) but even some other custom formats with no *, like "d/mm/yyyy h:mm" get mangled when saved to CSV.</p>