title: Subtracting two NSDate objects
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/1427151/how-to-get-time-difference-in-iphone">How to Get time difference in iPhone</a>  </p>
  </blockquote>
  
  
  
  <p>I´m getting date and time from a JSON feed. I need to find the difference between the date I´m getting from the feed and today´s date and time. Any suggestions how I can do this?</p>
  
  <p>I know I need to subtract the current date with the date I get from the feed, but I don´t know how to do it.</p>
  
  <p>Ex: </p>
  
  <p>Date from feed: <code>Date: 2011-06-10 15:00:00 +0000</code>
  Today: <code>Date: 2011-06-10 14:50:00 +0000</code></p>
  
  <p>I need to display that the difference is ten minutes.</p>
  
  <p>Thanks!</p>