System.Globalization.EastAsianLunisolarCalendar.GetTerrestrialBranch C# (CSharp) Method

        public int GetTerrestrialBranch(int sexagenaryYear) {
            if ((sexagenaryYear < 1) || (sexagenaryYear > 60)) {
                throw new ArgumentOutOfRangeException(
                                "sexagenaryYear",
                                String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Range"), 1, 60));
            }

            return ((sexagenaryYear - 1) % 12) + 1;
        }