8.6.4 Set time (NTP)
Reference: Managing
Accurate Date and Time HOWTO.
8.6.4.1 Set time with permanent Internet connection
Set system clock to the correct time automatically via a remote server:
# ntpdate server
This is good to have in /etc/cron.daily/ if your system has a
permanent Internet connection.
8.6.4.2 Set time with sporadic Internet connection
Use the chrony package.
