time

ServicePointManager.ServerCertificateValidationCallback = (p1, p2, p3, p4) => true;
        var myHttpWebRequest = (HttpWebRequest)WebRequest.Create("http://www.microsoft.com");
        var response = myHttpWebRequest.GetResponse();
        string todaysDates = response.Headers["date"];
        PlayerPrefs.SetString("sysString", DateTime.ParseExact(todaysDates,
                                   "ddd, dd MMM yyyy HH:mm:ss 'GMT'",
                                   CultureInfo.InvariantCulture.DateTimeFormat,
                                   DateTimeStyles.AssumeUniversal).ToBinary().ToString());