-(NSDate *)getPriousorLaterDateFromDate:(NSDate *)date withMonth:(NSInteger)month

 {

     NSDateComponents *comps = [[NSDateComponents alloc] init];

     [comps setMonth:month];

     NSCalendar *calender = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];

     NSDate *mDate = [calender dateByAddingComponents:comps toDate:date options:];

     return mDate;

 }

 - (NSDate *)getLaterDateFromDate:(NSDate *)date withYear:(NSInteger)year month:(NSInteger)month day:(NSInteger)day {

     NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];

     NSDateComponents *comps = nil;

     comps = [calendar components:NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay fromDate:date];

     NSDateComponents *adcomps = [[NSDateComponents alloc] init];

     [adcomps setYear:year];

     [adcomps setMonth:month];

     [adcomps setDay:day];

     NSDate *newdate = [calendar dateByAddingComponents:adcomps toDate:date options:];

     return newdate;

 }