[Unit]
Description=Synchronise System clock to hardware RTC
DefaultDependencies=no
Wants=dev-rtc0.device
After=dev-rtc0.device
Before=systemd-journald.service time-sync.target sysinit.target shutdown.target
Conflicts=shutdown.target

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/sbin/hwclock --hctosys --rtc=/dev/rtc0 -v --utc --noadjfile
RestrictRealtime=yes

[Install]
WantedBy=sysinit.target