How can I retrieve server time from a website like "www.time.is" or like that?

public static DateTime GetInternetTime()
    {
    HttpWebRequest myHttpWebRequest = (HttpWebRequest)WebRequest.Create("http://www.Google.com");
    WebResponse response = myHttpWebRequest.GetResponse();
    string todaysDates = response.Headers["date"];
    return DateTime.ParseExact(todaysDates,
                               "ddd, dd MMM yyyy HH:mm:ss 'GMT'",
                               CultureInfo.InvariantCulture.DateTimeFormat,
                               DateTimeStyles.AssumeUniversal);
    }