title: Time difference in seconds
body: <p>In a Perl program I have a variable containing date / time in this format:  </p>
  
  <pre><code>Feb 3 12:03:20  
  </code></pre>
  
  <p>I need to determine if that date is more than <em>x</em> seconds old (based on current time), even if this occurs over midnight (e.g. <code>Feb 3 23:59:00</code> with current time = <code>Feb 4 00:00:30</code>). </p>
  
  <p>The perl date / time information I've found is mind-boggling.
  Near as I can tell I need to use <a href="http://search.cpan.org/perldoc?Date%3A%3ACalc" rel="noreferrer">Date::Calc</a>, but I am not finding a seconds-delta.
  Thanks :)  </p>