title: Comprehensive list of date format patterns in obj-c for iOS
body: <p>Is there an actual, comprehensive list of supported date format patterns/tokens?  I've been looking at the <a href="http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSDateFormatter_Class/Reference/Reference.html#//apple_ref/occ/cl/NSDateFormatter" rel="noreferrer">API docs</a>, and they mention a few of them, such as <code>MM</code>, but where's the rest?</p>