Time and NTP
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timedatectl — time, time zone, and synchronization
Manages system time and NTP; set-time requires turning off set-ntp first, or the time reverts.
5 mintimedatectltimedatectl set-timezonetimedatectl set-ntp -
chrony: time synchronization over NTP
An NTP client and server: keeps the system clock in step with time servers and can serve time to your machines.
13 minchronyc trackingchronyc sourceschronyc sourcestats -
date — date and time in the shell
The date command: current time, output formats, timestamps for files and logs, date arithmetic.
4 mindatedate -ddate -Iseconds