I remember looking at this circa 2016 - 2021 and letting go at that time, crony had just been released and systemd was still relatively new at that time.

• sudo systemctl status systemd-timesyncd
  • The default configuration is shown in /etc/systemd/timesyncd.conf (All the defaults are shown commented out)
  • Copy the default configuration in /etc/systemd/timesyncd.conf to /etc/systemd/timesyncd.conf.d/timesyncd.conf and modify options in '/etc/systemd/timesyncd.conf.d/timesyncd.conf *timedatectl timesync-status =====ntp servers===== *server 0.au.pool.ntp.org *server 1.au.pool.ntp.org *server 2.au.pool.ntp.org *server 3.au.pool.ntp.org *nets.org.sg''