using System;

public class Program

{

    public static void Main()

    {

        DateTime parsedDate;

        var parsed = DateTime.TryParse("+020020-12-21T06:00:00.000Z", out parsedDate);

        Console.WriteLine("parsed true/false: " + parsed);

        Console.WriteLine("parsed date: " + parsedDate.ToShortDateString());

    }

}