NTP

Install

emerge -av ntp

Edit:

/etc/conf.d/ntp-client

And add the following line (for the UK):

NTPCLIENT_OPTS="-b -u ntp.demon.co.uk ntp2b.mcc.ac.uk ntp2c.mcc.ac.uk"

Start the service and add to the default run level:

/etc/init.d/ntp-client start
rc-update add ntp-client default