I prefer to use Openntp to synchronize my time, it appears to be very easy to setup indeed. Here's how I get it to work with just few steps.
Installing openntpd -
shell>emerge -v openntpd
Adding two lines to /etc/ntpd.conf
shell>echo "server ntp.jaring.my" >> /etc/ntpd.conf
shell>echo "server ntp1b.jaring.my" >> /etc/ntpd.conf
Then just start it up -
shell>sudo /etc/init.d/ntpd start
Remember to change this entry in the file /etc/conf.d/clock from
Done.That's pretty quick and normally you just need to change the ntp server to your preferred one.