using System;

public class Program

{

    public static void Main()

    {

        string invertedTicks1 = string.Format("{0:D19}", DateTime.MaxValue.Ticks - DateTime.UtcNow.AddYears(-10).Ticks);

​

        string invertedTicks2 = string.Format("{0:D19}", DateTime.MaxValue.Ticks - DateTime.UtcNow.Ticks);

​

        string invertedTicks3 = string.Format("{0:D19}", DateTime.MaxValue.Ticks - DateTime.UtcNow.AddYears(511).Ticks);

        Console.WriteLine("Nyest årstall er :" + DateTime.UtcNow.AddYears(511).ToString() + " Tick: " + invertedTicks3);

        Console.WriteLine("Midten årstall er :" + DateTime.UtcNow.ToString() + " Tick: " + invertedTicks2);

        Console.WriteLine("Eldst årstall er :" + DateTime.UtcNow.AddYears(-10).ToString() + " Tick: " + invertedTicks1);

​

​

    }

}