title: Convert "minutes since midnight" to time (convert to NSDate?)
body: <p>I am getting some open/closed times as integers since midnight. For example: </p>
  
  <p>"1140" = 19:00 (or 7 pm if you will) or;
  "570" = 9:30 (or 9.30 am)</p>
  
  <p>I can easily get the time in European format, just by doing doing a simple calculation and formatting:</p>
  
  <pre><code>[NSString stringWithFormat:@"%d:00", (T / 60)]
  </code></pre>
  
  <p>However, this doesn't work for half hours, such as "570 minutes since midnight". Also, I run into problems if I want to include a bit of localization, because some people may prefer AM/PM times.</p>
  
  <p>Does NSDate include a method for easily implementing times using the above? Or can anyone tell me how I would at least convert a time like "570 minutes since midnight" to 9:30 properly. Right now it obviously won't write the :30 part.</p>
  
  <p>Thank you</p>