import java.util.Scanner;
import java.lang.Math;

public class daysOfTheWeek {


    public static void main(String[] args) {

        System.out.println("Enter date (dd/mm/yyyy)");
        Scanner dateScanner = new Scanner(System.in);
        dateScanner.useDelimiter("/");
        int day = dateScanner.nextInt();
        int month = dateScanner.nextInt();
        int year = dateScanner.nextInt();
        System.out.println(dayOfTheWeek(day,month,year) + "" + day + numberEnding(day) + " of " + monthName(month) + year);
    }

    public static String numberEnding ( int day){

        String endOfNumber = "";
        switch (day) {
            case 1:
                endOfNumber = "st";
                break;
            case 2:
                endOfNumber = "nd";
                break;
            case 3:
                endOfNumber = "rd";
                break;
            default:
                endOfNumber = "nth";
                break;
        }
        return endOfNumber;
    }

    public static String monthName ( int month){
        String aMonth = "";
        switch (month) {
            case 1:
                aMonth ="January";
                break;
            case 2:
                aMonth ="Febrary";
                break;
            case 3:
                aMonth = "March";
                break;
            case 4:
                aMonth  = "April";
                break;
            case 5:
                aMonth = "May";
                break;
            case 6:
                aMonth = "June";
                break;
            case 7:
                aMonth = "July";
                break;
            case 8:
                aMonth = "August";
                break;
            case 9:
                aMonth = "September";
                break;
            case 10:
                aMonth = "October";
                break;
            case 11:
                aMonth = "November";
                break;
            case 12:
                aMonth = "December";
                break;
        }
        return aMonth;
    }
    public static String dayOfTheWeek ( int day, int month, int year)
    {
        String weekDay = "";

        if (month == 1 || month == 2) {
            int Y = year - 1;
        } else {
            int Y = year;
        }
        int y = year % 100;

        int c = year;
        while (c >= 100) {
            c /= 10;
        }

        double w = ((day + Math.floor(2.6 * (((month + 9) % 12) + 1) - 0.2) + y + Math.floor(y / 4) + Math.floor(c / 4) - (2 * c)) % 7);
        if (w < 0) {
            w += 7;
        }
        switch ((int) w) {
            case 0:
                weekDay = "Sunday";
                break;
            case 1:
                weekDay  = "Monday";
                break;
            case 2:
                weekDay  = "Tuesday";
                break;
            case 3:
                weekDay  = "Wednesday";
                break;
            case 4:
                weekDay  = "Thursday";
                break;
            case 5:
                weekDay  = "Friday";
                break;
            case 6:
                weekDay  = "Satuday";
                break;
        }
        return weekDay;
    }
}