title: How do I know when to release an NSDate object?
body: <p>Do either or both of these date pointers requires a [release] when I'm done with them. How would i know this? I'm unsure since I'm not doing init explicitly.</p>
  
  <pre><code>NSDate *date = [NSDate date];
  
  NSDate *date = [dateWithTimeIntervalSince1970:100000000];
  </code></pre>