Milyen nap?

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int nn,hh,szam=0;

    while ( scanf("%d.%d.", &hh, &nn) )
    {
        if ( hh == 0 || nn == 0 ) break;

        if ( hh == 1 ) szam= nn;
        else if ( hh == 2 ) szam= 31+nn;
        else if ( hh == 3 ) szam= 31+28+nn;
        else if ( hh == 4 ) szam= 31+28+31+nn;
        else if ( hh == 5 ) szam= 31+28+31+30+nn;
        else if ( hh == 6 ) szam= 31+28+31+30+31+ nn;
        else if ( hh == 7 ) szam= 31+28+31+30+31+30+nn;
        else if ( hh == 8 ) szam= 31+28+31+30+31+30+31+nn;
        else if ( hh == 9 ) szam= 31+28+31+30+31+30+31+31+nn;
        else if ( hh == 10 ) szam=31+28+31+30+31+30+31+31+30+nn;
        else if ( hh == 11 ) szam=31+28+31+30+31+30+31+31+30+31+nn;
        else if ( hh == 12 ) szam=31+28+31+30+31+30+31+31+30+31+30+nn;


        if ( szam % 7 == 1)  printf("Monday\n");
        else if ( szam % 7 == 2)  printf("Tuesday\n");
        else if ( szam % 7 == 3)  printf("Wednesday\n");
        else if ( szam % 7 == 4)  printf("Thursday\n");
        else if ( szam % 7 == 5)  printf("Friday\n");
        else if ( szam % 7 == 6)  printf("Saturday\n");
        else if ( szam % 7 == 0)  printf("Sunday\n");



    }

    return 0;
}