public void TestSkHolidays1974(int month, int day)
        {
            var holiday         = new DateTime(1974, month, day);
            var holidayCalendar = new SlovakiaPublicHoliday();
            var actual          = holidayCalendar.IsPublicHoliday(holiday);

            Assert.IsTrue(actual, $"{holiday.ToString("D")} is not a holiday");
        }
        public void TestSkNoHolidays1952(int month, int day)
        {
            var holiday         = new DateTime(1952, month, day);
            var holidayCalendar = new SlovakiaPublicHoliday();
            var actual          = holidayCalendar.IsPublicHoliday(holiday);

            Assert.IsFalse(actual, $"{holiday.ToString("D")} is a holiday (shouldn't be)");
        }