using System;

using System.Globalization;

​

public class Program

{

    public static void Main()

    {

        CultureInfo provider = CultureInfo.InvariantCulture;

        var myDate = DateTime.ParseExact("Tue, 17 June 2014 02:38:06 EDT", "ddd, dd MMMM yyyy hh:mm:ss EDT", provider);

        Console.WriteLine(myDate);

    }

}