private void daySuffixTester() {

        myWindow.clearOut();
        int i;
        for (i = 1; i <= 31; i++) {
            myWindow.writeOutLine(daySuffix(i + ""));
        }
    }

    private String daySuffix(String t) {

        String day = "";


        if (isNumeric(t)) {
            int s = (int) Math.round(Double.parseDouble(t));


            if (s >= 1 && s <= 31) {

                if (s == 1 || s == 21 || s == 31)
                    day = s + "st";

                else if (s == 2 || s == 22)
                    day = s + "nd";

                else if (s == 3 || s == 23)
                    day = s + "rd";

                else if (s >= 4 && s <= 20 || s >= 24 && s <= 30)
                    day = s + "th";

                //return day;
            } else day = "null";

        }
        else
            day = "null";
    return day;
    }