Get first day of a month.

First we will build first date (01-xx-xxxx)of a given month.
Of course you can change 01 to anything like 12,26 or whatever date you want to find day of.

int month = 4;

int year=2012;

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

[dateFormatter setDateFormat:@"dd-MM-yyyy"];

NSDate *date=[dateFormatter dateFromString:[NSString stringWithFormat:@"01-%i-%i",month,year]];

[dateFormatter release];

dateFormatter=nil;

   

Then we will find day for the above date in Gregorian Calendar. You can choose the method give in  previous article where you create NSDateFormatter with @"EEEE",But if you are calendar specific, then following is the way.

NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];

NSDateComponents *weekdayComponents =[gregorian components:NSWeekdayCalendarUnit fromDate:date];

int firstDay = [weekdayComponents weekday];//1 for Sun,2 for Mon etc

[gregorian release];