A mouthful: when I pass the date "Tue, 15 Jan 2013 11:18:57 -0800" into an NSDateFormatter with the pattern string @"EEE, dd MMM yyyy HH:mm:ss ZZZ" when my Region Format is set to "United States", it works fine.
When I do exactly the same thing—with the exception that my Region Format is set to Germany—it can't parse it.
Any idea why this is so?