using System;

using System.Globalization;

​

public class Program

{

    public static void Main()

    {

/*      string s = "woensdag 3 juni 2015 9:12:14 uur CEST";

        DateTime dt;

        if(DateTime.TryParseExact(s, "dddd d MMMM yyyy H:mm:ss 'uur CEST'", 

                          CultureInfo.GetCultureInfo("nl-BE"),

                          DateTimeStyles.None, out dt))

    {

        Console.WriteLine(dt); // 03/06/2015 09:12:14

    }

        */

        string s = "04 dic 2019 07:08:51";

        CultureInfo provider = new CultureInfo("es-ES");

        DateTimeStyles styles = DateTimeStyles.None;

        DateTime dt;

        //dt = DateTime.Parse(s,provider);

        DateTime.TryParseExact(s, "dd MMM yyyy HH:mm:ss", provider.DateTimeFormat, styles, out dt);

        //DateTime.TryParse(s, provider.DateTimeFormat, styles, out dt);

        Console.WriteLine(dt); // 04/12/2019 07:08:51*/

    }

}