using System;

public class Program

{

    public static void Main()

    {

        var dt = DateTime.Parse("01-06");

        Console.WriteLine("------- current: incorrect --------");

        Console.WriteLine("culture:" + System.Globalization.CultureInfo.CurrentCulture);

        Console.WriteLine("day:" + dt.Day);

        Console.WriteLine("month:" + dt.Month);

        Console.WriteLine("\n\n");

        Console.WriteLine("------- works by specifiying the culture --------");

        var culture = new System.Globalization.CultureInfo("en-GB", false);

        dt = DateTime.Parse("01-06", culture);

        Console.WriteLine("culture:" + culture);

        Console.WriteLine("day:" + dt.Day);

        Console.WriteLine("month:" + dt.Month);

        Console.WriteLine("\n\n");

        Console.WriteLine("------- works by specifiying the format (best way) --------");

        culture = System.Globalization.CultureInfo.InvariantCulture;

        dt = DateTime.ParseExact("01-06", "dd-MM", culture);

        Console.WriteLine("culture:" + culture);

        Console.WriteLine("day:" + dt.Day);

        Console.WriteLine("month:" + dt.Month);

        Console.WriteLine("\n\n");

    }

}