ExcelFormulaParser.Engine.Excel.Functions.DateTime.TimeStringParser.Parse12HourTimeString C# (CSharp) Method

        private double Parse12HourTimeString(string input)
        {
            string dayPart = string.Empty;
            dayPart = input.Substring(input.Length - 2, 2);
            int hour;
            int minute;
            int second;
            GetValuesFromString(input, out hour, out minute, out second);
            if (dayPart == "PM") hour += 12;
            ValidateValues(hour, minute, second);
            return GetSerialNumber(hour, minute, second);
        }