NSDateFormatter bug

df_24_hour_issue.mm

NSLocale* posixLocale = [[NSLocale alloc] initWithLocaleIdentifier: @"en_US_POSIX"];
        NSCalendar* gregorianCal = [[NSCalendar alloc] initWithCalendarIdentifier: NSCalendarIdentifierGregorian];
        NSDateFormatter* df = [NSDateFormatter new];
        {
            gregorianCal.locale = posixLocale;
            df.locale = posixLocale;
            df.calendar = gregorianCal;
        }
        df.dateFormat = @"yyyy-MM-dd'T'hh:mm:ss.SSSZ";
        
NSDate* result = [df dateFromString: @"2015-08-04T12:02:09.280596Z"];
NSLog(@"%@", result); // 2015-08-04 00:02:09 +0000

(lldb) po [result timeIntervalSince1970]
1438646529.28

new Date(1438646529 * 1000)
Tue Aug 04 2015 03:02:09 GMT+0300 (EEST)

Noon turned into midnight.

Fixed by replacing hh ==> HH

df.dateFormat = @"yyyy-MM-dd'T'HH:mm:ss.SSSZ";