Найкращий сервіс для синхронізації часу - Chrony

Verify that service systemd-timesyncd is not running:

systemctl status systemd-timesyncd

Stop it if it's running:

sudo systemctl stop systemd-timesyncd
sudo systemctl disable systemd-timesyncd

Check also ntp service in same way.

Install chrony:

sudo apt install chrony

• NTP pools
• Control your computer time and date with systemd
• Manage NTP with Chrony