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zeroseis/ntp-setup-raspberry-pi.md

Last active April 27, 2025 23:33
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Configure Raspberry Pi to auto-update system clock with NTP server
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ntp-setup-raspberry-pi.md

1. Ensure systemd-timesyncd is installed:

Open the terminal and install systemd-timesyncd if it's not already installed:

sudo apt install systemd-timesyncd

2. Configure NTP servers:

Edit the /etc/systemd/timesyncd.conf file to specify your preferred NTP servers:

sudo nano /etc/systemd/timesyncd.conf

In the file, locate the [Time] section and set the NTP and FallbackNTP values as desired:

[Time]
NTP=a.st1.ntp.br
FallbackNTP=b.sti.ntp.br c.sti.ntp.br

Replace a.st1.ntp.br, b.sti.ntp.br, and c.sti.ntp.br with the NTP servers you wish to use. Using regional NTP servers can improve synchronization accuracy.

3. Restart systemd-timesyncd:

Apply the new configuration by restarting the service:

sudo systemctl restart systemd-timesyncd

4. Verify synchronization status:

Check the synchronization status to ensure it's active:

timedatectl status

Ensure that "System clock synchronized" is marked as "yes".

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