Chrony is an implementation of the Network Time Protocol (NTP) that runs on Unix-like operating systems (including Linux and macOS) and is released under the GNU GPL v2. It can synchronize the system clock with NTP servers, reference clocks (e.g. GPS receiver), and manual input using wristwatch and keyboard. It can also operate as an NTPv4 (RFC 5905) server and peer to provide a time service to other computers in the network.
apt install -y chrony timedatectl set-ntp true systemctl enable chrony && systemctl restart chrony timedatectl set-timezone Asia/Tehran chronyc sourcestats -v chronyc tracking -v date