How to setup NTP on BSD

echo xntpd_enable=\"YES\" >> /etc/rc.conf
echo xntpd_program=\"/usr/sbin/ntpd\" >> /etc/rc.conf
echo xntpd_flags=\"-p /var/run/ntpd.pid\" >> /etc/rc.conf
ntpdate time.nist.gov
ntpdate time.nist.gov
mkdir /etc/ntp
touch /etc/ntp/drift

touch /etc/ntp.conf
echo server time.nist.gov >> /etc/ntp.conf
echo driftfile /etc/ntp/drift  >> /etc/ntp.conf
/etc/rc.d/ntpd start