[Unit]
Description=Back up llmgw every night

[Timer]
OnCalendar=*-*-* 03:15:00
# A machine that was off at 03:15 backs up when it next starts, rather than
# waiting another day with a gap nobody notices until the alert.
Persistent=true
RandomizedDelaySec=10m

[Install]
WantedBy=timers.target