NSDate *date = [NSDate date];
NSTimeZone *zone = [NSTimeZone systemTimeZone];
NSInteger interval = [zone secondsFromGMTForDate:date];
NSDate *localeDate = [date dateByAddingTimeInterval: interval];
NSLog(@"%@", localeDate);
原文：http://www.cnblogs.com/pretty-guy/p/4366033.html