title: Conversion String to Datetime (24 hour format) is not match
body: <p>I have a string <code>10/13/2016 21:42</code></p>
  
  <pre><code>Dim ETAtime1 As String = Convert.ToDateTime("10/13/2016 21:42").ToString("MM/dd/yyyy HH:mm")
  'result is 10/13/2016 21:42
  </code></pre>
  
  <p>I want the result to be <code>10/13/2016 21:42</code> (24 hour format) like the above string. But why, after I have converted it like below, does it become 12 hour format?</p>
  
  <pre><code> Dim ETAtime As DateTime = DateTime.ParseExact(ETAtime1, "MM/dd/yyyy HH:mm", Nothing)
  'result is 10/13/2016 09:42
  </code></pre>
  
  <p>How to resolve it, it become 09:42 not 21:42? I need DateTime type data not an string.</p>