以下是一些解码表中日期的代码，以防对您有用。

NSNumber *time = [NSNumber numberWithDouble:(d - 3600)];
NSTimeInterval interval = [time doubleValue];    
NSDate *online = [NSDate dateWithTimeIntervalSinceReferenceDate:interval];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"MM/dd/yyyy HH:mm:ss.SSS"];

NSLog(@"result: %@",[dateFormatter stringFromDate:online]);

https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSDate_Class/Reference/Reference.html

看看dateWithTimeIntervalSinceReferenceDate：