using System;

public class Program

{

    public static void Main()

    {

        var date = DateTime.Now;

        var dateOffset = DateTimeOffset.Now;

        Console.WriteLine(date.ToUniversalTime().ToString("O"));

        Console.WriteLine(DateTime.UtcNow.ToString("O"));

        Console.WriteLine(dateOffset.ToUniversalTime().ToString("O"));

        Console.WriteLine(dateOffset.UtcDateTime.ToString("O"));

    }

}