How to get country wise / timezone wise date & time from internet server c#

[Mou_kolkata]

i have to show date & time to user as per the user timezone id. i can not rely on user pc date time and setting. i was searching Google for the way and got a below code. code seems will query many external server for date & time but one thing not clear to me what kind of date & time i can expect from the below code.

some time i need india time. some time i need london time and some time i need other country local time. few county has many timezone that is why i want to send timezone id/name and want to get datetime based on timezone id/name.

so just guide me how to customize the below code where i can send users side timezone id and routine will return right local time based on timezone id even if user pc datetime setting is wrong. looking for good help. thanks

public static DateTime GetFastestNISTDate()
{
var result = DateTime.MinValue;

// Initialize the list of NIST time servers
// http://tf.nist.gov/tf-cgi/servers.cgi
string[] servers = new string[] {
"nist1-ny.ustiming.org",
"nist1-nj.ustiming.org",
"nist1-pa.ustiming.org",
"time-a.nist.gov",
"time-b.nist.gov",
"nist1.aol-va.symmetricom.com",
"nist1.columbiacountyga.gov",
"nist1-chi.ustiming.org",
"nist.expertsmi.com",
"nist.netservicesgroup.com"
};

// Try 5 servers in random order to spread the load
Random rnd = new Random();
foreach (string server in servers.OrderBy(s => rnd.NextDouble()).Take(5))
{
try
{
// Connect to the server (at port 13) and get the response
string serverResponse = string.Empty;
using (var reader = new StreamReader(new System.Net.Sockets.TcpClient(server, 13).GetStream()))
{
serverResponse = reader.ReadToEnd();
}

// If a response was received
if (!string.IsNullOrEmpty(serverResponse))
{
// Split the response string ("55596 11-02-14 13:54:11 00 0 0 478.1 UTC(NIST) *")
string[] tokens = serverResponse.Split( );

// Check the number of tokens
if (tokens.Length >= 6)
{
// Check the health status
string health = tokens[5];
if (health == "0")
{
// Get date and time parts from the server response
string[] dateParts = tokens[1].Split(-);
string[] timeParts = tokens[2].Split);

// Create a DateTime instance
DateTime utcDateTime = new DateTime(
Convert.ToInt32(dateParts[0]) + 2000,
Convert.ToInt32(dateParts[1]), Convert.ToInt32(dateParts[2]),
Convert.ToInt32(timeParts[0]), Convert.ToInt32(timeParts[1]),
Convert.ToInt32(timeParts[2]));

// Convert received (UTC) DateTime value to the local timezone
result = utcDateTime.ToLocalTime();

return result;
// Response successfully received; exit the loop

}
}

}

}
catch
{
// Ignore exception and try the next server
}
}
return result;
}

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