It appears that the uptime.coreutils anomaly also applies to systemctl!
root@beaglebone:~# systemctl status cloud9.service
cloud9.service - Cloud9 IDE
Loaded: loaded (/lib/systemd/system/cloud9.service; enabled)
Active: active (running) since Sat, 01 Jan 2000 00:08:02 +0000; 12 years and 0 months ago
Main PID: 99 (node)
CGroup: name=systemd:/system/cloud9.service
└ 99 /usr/bin/node /usr/share/cloud9/bin/cloud9.js -l 0…
root@beaglebone:~#