title: Creating log with millisecond portion in time
body: <p>I am writing activities of a program in a log with timestamp attached to each line with the following format:</p>
  
  <pre><code>DateTime.Now.ToString("MM/dd/yyyy HH:mm:ss FFF")
  </code></pre>
  
  <p>I was expecting the millisecond portion to always have 3 digits. However the following appears:</p>
  
  <pre><code>11/29/2013 18:53:14 96 -  SessionKey-2rvun1agyw1svcexmqf5dejh-MAC.Master Page_Load - Begin
  11/29/2013 18:53:14 975 -  SessionKey-2rvun1agyw1svcexmqf5dejh-MAC.Master Page_Load - End
  </code></pre>
  
  <p>In the first one, why is the millisecond portion not 096?</p>