update README with backfill timer info

README.md

@@ -248,6 +248,13 @@ any old, stale analysis locks:
 $ locklost find-locks -r
 ```
 
+We also have timer services available to handle the backfilling after
+Tuesday maintenance if need be:
+```shell
+$ systemctl --user enable --now locklost-search-backfill.timer
+$ systemctl --user enable --now locklost-analyze-backfill.timer
+```
+
 
 # Developing and contributing