I'm 532 hours away from GMT?

iPhone, Xcode, Objective-c:

NSDateFormatter *df = [[[NSDateFormatter alloc] init] autorelease];
[df setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSString *s = @"1902-02-01 开发者_Python百科01:00:00";
NSDate *aDate = [df dateFromString:s];
NSLog(@"(%@)", aDate);

// (1902-02-01 01:00:00 -053211)

Wow.. 532 hour timezone offset?