using System;

using System.Globalization;

public class Test

{

    public static void Main()

    {

        DateTime now = DateTime.Now;

        Console.WriteLine(now.ToString(@"d  MMMM", new CultureInfo("PT-pt")));

            CultureInfo pt = new CultureInfo("pt-PT",false);

            string dateFormatString = pt.DateTimeFormat.LongDatePattern;

​

            string data =  DateTime.Now.ToString(dateFormatString,new CultureInfo("pt-PT"));

        Console.WriteLine(data);

    }

}