How to get Universal Time irrespective of my system time.

string host = Dns.GetHostName();
var client = new TcpClient(host, 13);
using (var streamReader = new StreamReader(client.GetStream()))
{
    var response = streamReader.ReadToEnd();
    var utcDateTimeString = response.Substring(7, 17);
    var localDateTime = DateTime.ParseExact(utcDateTimeString, "yy-MM-dd hh:mm:ss", CultureInfo.InvariantCulture, DateTimeStyles.AssumeUniversal);
    TextBox1.Text = localDateTime.ToString();
}

OGs answer is the correct one if you are connected to the internet.

If not then there is another way if you have a gps. Gps devices receive data containing very accurate UTC time because the satellite clocks are synchronised to very accurate atomic clocks.. If you set gps to NMEA data for example you can parse the time value from the data.

This method can be used in remote locations to set the PC clock accurately. See here for example:
Writing Your Own GPS Applications: Part I[^]

Please check below link


http://stackoverflow.com/questions/516788/getting-current-gmt-time[^]