[Unit]
Description=Monthly flood-model retrain (docs/FLOOD_FORECASTING.md section 7)

[Timer]
# Policy: at minimum once pre-monsoon (May-June), monthly through the season
# (July-November), and after any major flood. A retrain costs ~12 min and RAM
# peaks ~300 MB, so running it every month all year is cheaper than remembering
# which months matter. 1st of the month, 03:30 server-local -- between the
# hourly scrapes and outside Thai daytime traffic.
OnCalendar=*-*-01 03:30:00
# Catch up if the box was off at the scheduled time.
Persistent=true
RandomizedDelaySec=20min
Unit=water-monitor-retrain.service

[Install]
WantedBy=timers.target