How do I get weekday and/or name of month from a NSDate variable?

Alright. The problem we're having is that we have NSStrings filled with dates in the format of yyyyMMdd and what we want to do is to get the current weekday and name of month. The function dagOmvandlare converts the datestring to weekday and month. The function is then called on viewDidload to name all our button-titles from english to swedish months.

our current solution is looking like this:

-(NSString *)dagOmvandlare:(id) suprDatum{

   NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
   dateFormatter.dateFormat = @"yyyyMMdd";

   NSDate *date = [dateFormatter dateFromString:suprDatum];


   NSString * monthString = [date descriptionWithCalendarFormat:@"%B"timeZone:nil
                                                         locale:[[NSUserDefaults standardUserDefaults] dictionaryRepresentation]];

   if ([monthString isEqualToString:@"January"]) {
       monthString = @"Januari";
   }
   else
       if ([monthString isEqualToString:@"February"]) {
           monthString = @"Februari";
       }
       else
           if ([monthString isEqualToString:@"May"]) {
               monthString = @"Maj";
           }
           else
               if ([monthString isEqualToString:@"June"]) {
                   monthString = @"Juni";
               }
               else
                   if ([monthString isEqualToString:@"July"]) {
                       monthString = @"Juli";
                   }
                   else
                       if ([monthString isEqualToString:@"August"]) {
                           monthString = @"Augusti";
                       }
                       else
                           if ([monthString isEqualToString:@"October"]) {
                               monthString = @"Oktober";
                           }
                           else
                               if ([monthString isEqualToString:@"March"]) {
                                   monthString = @"Mars"