NSDateComponents not printing accurate day/month/year times [duplicate] - objective-c

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Age extracted from birth date always off by inconsistent amount
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I'm using NSDateComponents to get each day, month, year, hour, minute, etc separately but day, month, year and seconds are not accurate with 2017-11-08 1:00:00....Does anybody know what I'm missing?
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy-MM-dd hh:mm:ss"];
NSDate *date = [dateFormatter dateFromString:#"2017-11-08 1:00:00"];
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [calendar components:(NSCalendarUnitHour | NSCalendarUnitMinute) fromDate:date];
NSInteger day = [components day];
NSInteger month = [components month];
NSInteger year = [components year];
NSInteger hour = [components hour];
NSInteger minute = [components minute];
NSInteger second = [components second];
NSLog(#"day: %ld",(long)day);
NSLog(#"month: %ld",(long)month);
NSLog(#"year: %ld",(long)year);
NSLog(#"hour: %ld",(long)hour);
NSLog(#"minute: %ld",(long)minute);
NSLog(#"second: %ld",(long)second);
Output:
day: 2147483647
month: 2147483647
year: 2147483647
hour: 1
minute: 0
second: 2147483647

Answer 1

You're only getting the hour and minute, because that's all you're asking for. If you actually ask for the day, month, year, and second, you'll get them:
NSCalendarUnit units = NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear |
NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
NSDateComponents *components = [calendar components:units fromDate:date];