title: NSTimer timer reset
body: <p>I'm developing an app that which has a timer that countdowns to a specific date and time of an event:</p>
  
  <pre><code>   destinationDate = [NSDate dateWithTimeIntervalSince1970:1403938831];
  timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(updateLabel) userInfo:nil repeats:YES];
  </code></pre>
  
  <p>The command I'm trying to implement is something like: when it reaches 0, it begins a new countdown to a new future event.</p>
  
  <p>I'm very new to objective C and was wondering how I go abut doing this.</p>
  
  <p>Thanks!</p>