TIME FROM INTERNET

    void Awake()
    {
        if (Application.internetReachability != NetworkReachability.NotReachable)
        {
            Debug.Log(GetNistTime());
        }
    }
    public DateTime GetNistTime()
    {
        ServicePointManager.ServerCertificateValidationCallback = MyRemoteCertificateValidationCallback;
        var myHttpWebRequest = (HttpWebRequest)WebRequest.Create("http://www.microsoft.com");
        var 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);
    }
    public bool MyRemoteCertificateValidationCallback(System.Object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
    {
        bool isOk = true;
        // If there are errors in the certificate chain, look at each error to determine the cause.
        if (sslPolicyErrors != SslPolicyErrors.None)
        {
            for (int i = 0; i < chain.ChainStatus.Length; i++)
            {
                if (chain.ChainStatus[i].Status != X509ChainStatusFlags.RevocationStatusUnknown)
                {
                    chain.ChainPolicy.RevocationFlag = X509RevocationFlag.EntireChain;
                    chain.ChainPolicy.RevocationMode = X509RevocationMode.Online;
                    chain.ChainPolicy.UrlRetrievalTimeout = new TimeSpan(0, 1, 0);
                    chain.ChainPolicy.VerificationFlags = X509VerificationFlags.AllFlags;
                    bool chainIsValid = chain.Build((X509Certificate2)certificate);
                    if (!chainIsValid)
                    {
                        isOk = false;
                    }
                }
            }
        }
        return isOk;
    }