[Unit]
Description=Run Automatic System Update daily
Requires=auto-system-update.service

[Timer]
# Run once per day at 04:00
OnCalendar=*-*-* 04:00:00
# Randomize by up to 30 minutes to avoid mirror congestion
RandomizedDelaySec=1800
# If a run was missed (e.g. machine was off), run on next boot
Persistent=true

[Install]
WantedBy=timers.target