private IEnumerable <DateTime> GetAlvDays(RedDays redDays, int year) { // Get the amount of days in romjula that is not a wekkend day // The 3 represents the three days of easter return(redDays.Dates.Where(days => days.Month == 12 && days.Day > 26 && days.Day <= 31 && days.DayOfWeek != DayOfWeek.Saturday && days.DayOfWeek != DayOfWeek.Sunday).Concat(new List <DateTime> { redDays.GetMondayInEaster(year), redDays.GetTuesdayInEaster(year), redDays.GetWednesdayInEaster(year) })); }