public static bool IsHoliday(DateTime dateTime, Country country = Country.Cz)
{
var isNationalDay = false;
var nationalDays = Holidays.GetHolidayDaysByCountry(country, dateTime.Year);
if (nationalDays != null)
{
isNationalDay = Holidays.GetHolidayDaysByCountry(country, dateTime.Year)
.Any(h => h.Month == dateTime.Month && h.Day == dateTime.Day);
}
return(isNationalDay);
}