$ dnf -y install chrony
$ systemctl start chronyd
$ systemctl enable chronyd
$ firewall-cmd --add-service=ntp --permanent
$ firewall-cmd --reload

$ chronyc sources
210 Number of sources = 4
MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^- mail.e-mese.hu                2   6    17     1    +20us[ +359us] +/-   26ms
^- hazmester-vlan194.budapes     2   6    17     1    +41us[  +41us] +/-   44ms
^* admin1.debrecen.hpc.niif.     2   6    17     1    +26us[ +365us] +/- 7501us
^- 185.82.232.254                4   6    17     0    -56us[  -56us] +/-   78ms