MarketTime в версии StockSharp_4.0.10

public class MyTrader : QuikTrader
{
public override MarketTime {get {return Terminal.ServerTime ?? base.MarketTime;}}
}

using System;
using System.Net;
using System.Net.Sockets;

namespace Ecng.Net
{
	using Ecng.Common;

	public class NtpClient
	{
		private readonly EndPoint _ntpServer;

		/// <summary>
		/// Create <see cref="NtpClient"/>.
		/// </summary>
		/// <param name="ntpServer">NTP server.</param>
		public NtpClient(string ntpServer = "time-a.nist.gov:123")
			: this(ntpServer.To<EndPoint>())
		{
			//var address = Dns.GetHostEntry(ntpServer).AddressList;

			//if (address == null || address.Length == 0)
			//    throw new ArgumentException(string.Format("Could not resolve ip address from '{0}'.", ntpServer), "ntpServer");

			//_endPoint = new IPEndPoint(address[0], 123);
		}

		/// <summary>
		/// Create <see cref="NtpClient"/>.
		/// </summary>
		/// <param name="ntpServer">NTP server.</param>
		public NtpClient(EndPoint ntpServer)
		{
			if (ntpServer == null)
				throw new ArgumentNullException("ntpServer");

			_ntpServer = ntpServer;
		}

		public DateTime GetLocalTime(TimeZoneInfo info, int timeout = 5000)
		{
			if (info == null)
				throw new ArgumentNullException("info");

			var utcTime = GetUtcTime(timeout);
			return utcTime + info.GetUtcOffset(utcTime);
		}

		public DateTime GetUtcTime(int timeout = 5000)
		{
			using (var s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp))
			{
				s.SendTimeout = timeout;
				s.ReceiveTimeout = timeout;

				s.Connect(_ntpServer);

				var ntpData = new byte[48]; // RFC 2030
				ntpData[0] = 0x1B;
				for (var i = 1; i < 48; i++)
					ntpData[i] = 0;

				s.Send(ntpData);
				s.Receive(ntpData);

				const byte offsetTransmitTime = 40;
				ulong intpart = 0;
				ulong fractpart = 0;

				for (var i = 0; i <= 3; i++)
					intpart = 256 * intpart + ntpData[offsetTransmitTime + i];

				for (var i = 4; i <= 7; i++)
					fractpart = 256 * fractpart + ntpData[offsetTransmitTime + i];

				var milliseconds = (intpart * 1000 + (fractpart * 1000) / 0x100000000L);

				var timeSpan = TimeSpan.FromMilliseconds(milliseconds);

				var dateTime = new DateTime(1900, 1, 1);
				dateTime += timeSpan;

				return dateTime;
			}
		}
	}
}