title: Using nodatime how do I find the difference between two ZonedDateTime objects
body: <p>Using nodatime how do I find the difference between two ZonedDateTime objects specifically in the ZonedDateTime timezones.</p>
  
  <p><strong>Edit - Example:</strong></p>
  
  <p>For example I have two dates in a timezone lets use "Europe/Stockholm" time. </p>
  
  <p>These are being calculated on a server which has its local time set to "America/Los_Angeles". </p>
  
  <p>I wish to get the number of milliseconds between the two periods respecting DST in the "Europe/Stockholm" timezone whilst ignoring the local time of the server. This is because the server local time can possibly change if deployed to a different server and I don't wish to update the code if that happens.</p>