title: Date from string not working with specific date
body: <p>I have a very strange issue about one specific date 10-18-15 using xcode 7.01</p>
  
  <p>Running code: </p>
  
  <pre><code>#import "ViewController.h"
  
  @interface ViewController ()
  
  @end
  
  @implementation ViewController
  
  - (void)viewDidLoad {
      [super viewDidLoad];
  
      NSString *stringDate =@"10-18-15";
      NSDateFormatter *dateFormatter = [NSDateFormatter new];
      dateFormatter.dateStyle = NSDateFormatterShortStyle;
      dateFormatter.timeStyle = NSDateFormatterNoStyle;
  
      NSDate *myDate = [dateFormatter dateFromString:stringDate];
  
      NSLog(@"Mydate:%@ Text: %@",myDate,stringDate);
  }
  
  - (void)didReceiveMemoryWarning {
      [super didReceiveMemoryWarning];
      // Dispose of any resources that can be recreated.
  }
  
  @end
  </code></pre>
  
  <p>output:</p>
  
  <p>2015-10-20 10:37:55.129 teste[3286:95083] Mydate:(null) Text: 10-18-15</p>
  
  <p>If I change <code>NSString *stringDate =@"10-17-15";</code></p>
  
  <p>output:</p>
  
  <p><code>2015-10-20 10:22:10.741 teste[3102:82782] Mydate:2015-10-17 03:00:00 +0000 Text: 10-17-15</code></p>
  
  <p>It seems this date 10-18-2015 is corrupted in <code>NSDate</code> database</p>
  
  <p>Any idea how to fix it?</p>