Date Time C#

using System;
using System.Globalization;
using System.Threading;
class Program {
    static void Main(string[] args) {
        DateTime d = new DateTime(2005, 08, 09);
        Console.WriteLine(d.ToLongDateString());
        Console.WriteLine(d.ToString("D", new CultureInfo("fr-FR")));
        CultureInfo ci = Thread.CurrentThread.CurrentCulture;
        Console.WriteLine(ci.ToString() + ": " + d.ToString("D"));
        ci = new CultureInfo("es-ES");
        Thread.CurrentThread.CurrentCulture = ci;
        Console.WriteLine(ci.ToString() + ": " + d.ToString("D"));
    }
}