private boolean validateInput(int sYear, int sMonth, int sDay, int eYear, int eMonth, int eDay) {
            if (sYear > eYear) {
                return false;
            } else if (sYear == eYear && sMonth > eMonth) {
                return false;
            } else if (sYear == eYear && sMonth == eMonth && sDay > eDay) {
                return false;
            } else {
                return true;
            }
        }