using System;

public class Program

{

    public static void Main()

    {

        string aactDate="";

        DateTime actDate = new DateTime();

        DateTime x = DateTime.Now;

        if(x==null)

        {

            actDate =new DateTime(2, 2, 1, 0, 0, 0, DateTimeKind.Utc);

             aactDate = actDate.ToUniversalTime().ToString("s") + "Z";

        }

        else

        {

            aactDate= x.ToString();

            aactDate = x.ToUniversalTime().ToString("s") + "Z";

        }

        Console.WriteLine(aactDate);

    }

}