DateTime christmasEve = new DateTime(2019, 12, 24);
                DateTime christmasDay = new DateTime(2019, 12, 25);
                DateTime dayAfterChristmasDay = new DateTime(2019, 12, 26);
                DateTime newYearsDay = new DateTime(2020, 01, 01);
                int ActualBusinessDays = 0;
                int TotalDays = (int)(secondDate - firstDate).TotalDays;
                DateTime dayCounter = firstDate;
                for (int i = 0; i <= TotalDays; i++)
                {
                    if (dayCounter.DayOfWeek == DayOfWeek.Sunday || dayCounter.DayOfWeek == DayOfWeek.Saturday || dayCounter.DayOfYear == christmasDay.DayOfYear ||
                        dayCounter.DayOfYear == christmasEve.DayOfYear || dayCounter.DayOfYear == dayAfterChristmasDay.DayOfYear || dayCounter.DayOfYear == newYearsDay.DayOfYear)
                    {

                    }
                    else
                    {
                        ActualBusinessDays++;
                    }
                    dayCounter = dayCounter.AddDays(1);
                }
                return ActualBusinessDays;