Note though, that time and location are both important. You need a good position and good times. So, to get accurate pointing:
1, Set the computer system clock using its “Change date and time” setting.
…
Remember to activate your NTP client (operating system dependent) and configure it to use reliable low-stratum servers.
My Win10 TCS is rarely more than 20ms from reality and my Linux boxen are usually under 5ms — the one I am using now claims to be 0.214ms away from GPS time..
