[CentOS] Systemd

So I've built my first CentOS 7 host and am learning all the new ways of 
doing things. I setup and enabled ntpd but after a reboot I get:

$ systemctl status ntpd
ntpd.service - Network Time Service
    Loaded: loaded (/usr/lib/systemd/system/ntpd.service; enabled)
    Active: inactive (dead)

After issuing:

$ systemctl start ntpd

Ntpd runs just fine. But why isn't it loading at boot time?