NSdate 時差轉換 - 從無到有，紀錄編程中的點點滴滴

-(void)tDate:(NSDate *)formatDate{

    NSTimeZone *zone = [NSTimeZonesystemTimeZone];

    NSInteger interval = [zone secondsFromGMTForDate: formatDate];

    NSDate *localeDate = [formatDate  dateByAddingTimeInterval: interval];

    NSLog(@"%@", localeDate);

}