How to find particular day of a month?

Question

I've done a lot of study on NSDate NSDateFormatter and NSCalendar but cannot figure out a way to find a particular day of a month. For example, I want to find the date of 2nd Monday of December (10/12/2012). I know how to find number of week or number of month but cannot figure out the way to do it.

Thanks.

Input is "2nd Monday of December", Output should be "10/12/2012". This is what you wanted? — Paramasivan Samuttiram, Nov 29 '12 at 05:07
possible duplicate of [How to get NSDate day, month and year in integer format?](http://stackoverflow.com/questions/6214094/how-to-get-nsdate-day-month-and-year-in-integer-format) — Janak Nirmal, Nov 29 '12 at 05:08

score 3 · Answer 1 · answered Nov 29 '12 at 05:16

    // Set start date of the month you want
    NSString *str = @"01 - 12 - 2012";
    NSDateFormatter *formatter1 = [[[NSDateFormatter alloc] init] autorelease];
    [formatter1 setDateFormat:@"dd - MM - yyyy"];
    NSDate *date = [formatter1 dateFromString:str];
    NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
    NSDateComponents *weekdayComponents = [gregorian components:(NSDayCalendarUnit | NSWeekdayCalendarUnit) fromDate:date];
    // Get the weekday with sunday as one
    NSInteger weekday = [weekdayComponents weekday];
    int weekNumber = 2;
    int dayOfweek = 2;
    int x = (7 - weekday) * (weekNumber - 1) + dayOfweek;
    // Add the no. of weeks - 1 or - 2 depending on the value of x.
    // Also Add 1 as the start date is 1st Dec.
    if(x < 7)
    {
        x += 7 * (weekNumber - 1) + 1;
    }
    else
    {
        x += 7 * (weekNumber - 2) + 1;
    }

score 1 · Answer 2 · edited May 23 '17 at 11:56

1

Try to find the particular day of the week from these codes then apply it for the month as well :)

Please refer to the following links :-

How do I get the day of the week with Cocoa Touch?

Number of days in the current month using iPhone SDK?

Hope They Help :)

edited May 23 '17 at 11:56

Community

1
1

answered Nov 29 '12 at 04:55

IronManGill

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@AdityaMathur Ur welcome... anything else please let me know :) – IronManGill Nov 29 '12 at 05:38

score 0 · Accepted Answer · answered Nov 29 '12 at 07:42

Robin's and Gill's answers helped me get a solution to my problem. With some more editing I was able to get a solution to my problem.

Here is the code that I used to get the solution

    -(void)findWeekDay:(NSInteger)weekDay forWeek:(NSInteger)week OfMonth:(NSInteger)month OfYear:(NSInteger)year
{
        NSDateComponents *dateComp = [[NSDateComponents alloc]init];
[dateComp setYear:year];
[dateComp setMonth:month];
[dateComp setDay:1];
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDate *firstDate=[gregorian dateFromComponents:dateComp];  //Sets first date of month.
firstDate=[self dateToGMT:firstDate];
NSLog(@"First date: %@",firstDate);
NSDateComponents *dateComp1 = [gregorian components:NSDayCalendarUnit|NSWeekdayCalendarUnit fromDate:firstDate];
NSInteger firstWeekDay=[dateComp1 weekday];  //Gets firstday of a week. 1-Sunday, 2-Monday and so on.
NSLog(@"First Week Day: %d",firstWeekDay);
NSRange daysInMonth = [gregorian rangeOfUnit:NSDayCalendarUnit inUnit:NSMonthCalendarUnit forDate:firstDate];   //To get number of days in that month
NSInteger x;    //days to be added to first date
if (firstWeekDay < weekDay) {
    x = (weekDay - firstWeekDay) + (7 * (week-1));
}
if (firstWeekDay > weekDay) {
    x = (7 - firstWeekDay + weekDay) + (7 * (week-1));
}
if (firstWeekDay == weekDay) {
    x = (7 * (week-1));
}
if (x > daysInMonth.length) {
    NSLog(@"Invalid Date: %d",x);
}
else {
    NSLog(@"Days to be added: %d",x);
    NSDateComponents *dateComp2 = [[NSDateComponents alloc]init];
    [dateComp2 setYear:0];
    [dateComp2 setMonth:0];
    [dateComp2 setDay:x];
    NSDate *desiredDate = [gregorian dateByAddingComponents:dateComp2 toDate:firstDate options:0];
    NSLog(@"Your desired date is: %@",desiredDate);
}

}

    - (NSDate *)dateToGMT:(NSDate *)sourceDate {
NSTimeZone* destinationTimeZone = [NSTimeZone systemTimeZone];
NSInteger destinationGMTOffset = [destinationTimeZone secondsFromGMTForDate:sourceDate];
NSDate* destinationDate = [[NSDate alloc] initWithTimeInterval:destinationGMTOffset sinceDate:sourceDate];
return destinationDate;

}

Now to find 3rd Monday of December 2012 call the method as

    [self findWeekDay:2 forWeek:3 OfMonth:12 OfYear:2012];

How to find particular day of a month?

3 Answers3