Set Up Time Synchronization on Debian10 - xxooxxooxx/xxooxxooxx.github.io GitHub Wiki

systemctl stop ntp
systemctl stop openntpd

apt purge ntp openntpd

apt install systemd-timesyncd
systemctl start systemd-timesyncd
systemctl status systemd-timesyncd
timedatectl

#disabling network time synchronization
# NTP service: inactive
timedatectl set-ntp no