void Main()
{
	//if the adTempus server is on a different computer, replace "." with the name
	using (var session = Scheduler.Connect(".", LoginAuthenticationType.Windows, "", ""))
	{
		using (var context = session.NewDataContext())
		{
      //retrieve the Holiday Set
			var holidays=context.GetHolidaySet("Standard U.S. Holidays");
			if(holidays==null)
				return;
			
			var startDate=new DateTime(2021,1,1);
			var endDate=startDate.AddYears(1);
			
			var matchingDates=holidays.GetMatchingDates(startDate, endDate);
			foreach(var item in matchingDates)
			{
				Console.WriteLine($"{item.MatchingDate} ({item.RuleName})");
			}
		}
	}
}