How to configure to NTP
What is NTP
In brief, the Network Time Protocol syncs your computer with multiple “Time Servers" around the world. You can define them manually, or automatically. It permits your computer, phone, and any devices that support NTP to have a really precise time, as it's needed for some programs or applications.
Firstly, open your control panel.
Then, go in the Clock and Region section.
Once you are there, click on “Date and Time”
Click on internet time
Once there click on “Change settings…"
Then change the “Server”
You can change this value by anything you want or use the Poli Systems public NTP servers :
ntp1.polisystems.ch for a server in Germany, Nuremberg
ntp2.polisystesms.ch for a server in Switzerland, Geneva
All our machines are synced with different Atomic clock around Switzerland and Germany.
Finnaly press “Update now” and OK.
You are done for your Windows Machine!
On Linux in the CLI it's really quiet easy to do.
Install the NTP package if needed.
apt install ntp -y
yum install ntp -y
Then go in
Change the lines “server" to
And finnaly make
service ntp restart
You can also run
ntpdate -u ntp1.polisystems.ch to update the time on your machine once.
Sadly for this one we don't have any screen-shots but here is how to do it !
macOS, Open the System Preferences app: Date and Time
- Click the lock to unlock the preference pane, if needed
- Enable the “Set date and time automatically” option
- Enter the IP or DNS addresses of your preferred time-servers followed by a period character, and separate multiple entries with commas.
E.g. “ntp1.polisystems.ch., ntp2.polisystems.ch.”
That's it now you will always be on time, and your computer too!
ressources for macOS : https://www.ctrl.blog/entry/tutorial-macos-ntp-config.html