diff --git a/README.md b/README.md
index f14f0f4..572781c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Bib Reminder for Munich public library
 
-This automatically sending pushover messages when a lent item is about to be returned, while also extending the period if possible.
+This automatically sending pushover messages when a lent item is about to be returned, while also extending the period of the lending if possible.
 
 Configure the docker container with the following variables.
 
@@ -9,10 +9,13 @@ Configure the docker container with the following variables.
 ### Required
 
 - `PUSHOVER_KEY` Your pushover API Key
-- `PUSHOVER_CLIENTS` A comma seperated list of pushover client ids.
-- `HEALTHCHECK_URL` An url for performing a healthcheck (see healthckeck.io for details)
+- `PUSHOVER_CLIENTS` A comma seperated list of pushover client ids. All the notifications will be sent to this ids
+- `NOTIFY_USERS` A coma separated list of <USER>:<pushover client id> tulles to send pushover messages selectivly
+- `HEALTHCHECK_URL` OPTIONAL url for performing a healthcheck (see healthckeck.io for details)
 - `BIB_USERS` A comma seperated list of combinations of <USER>:<PWD> combinations to check and extend lent items.
-- `LIBRARY_URL` The url of the OPAC entry page of your library
+- `LIBRARY_URL` The url of the OPAC entry page of your library, defaults to the one of Stadtbibliothek München
+- `RUN_AT_HOUR` Check at hour, default 6
+- `RUN_AT_MINUTE` Check at minute, default 0
 
 Example:
 
diff --git a/bibcheck.py b/bibcheck.py
index aa4179f..8edd535 100644
--- a/bibcheck.py
+++ b/bibcheck.py
@@ -30,7 +30,7 @@ def main():
             break
 
         now = datetime.datetime.utcnow
-        to = (now() + datetime.timedelta(days = 1)).replace(hour=6, minute=0, second=0)
+        to = (now() + datetime.timedelta(days = 1)).replace(hour=os.environ.get('RUN_AT_HOUR', 6), minute=os.environ.get('RUN_AT_MINUTE', 0), second=0)
         time.sleep((to-now()).seconds)
 
 def check(username, password, notify_ids):
@@ -69,8 +69,6 @@ def check(username, password, notify_ids):
                     except:
                         print("No client")
     except (StopIteration, mechanize._mechanize.LinkNotFoundError) as e:
-        #for client in itertools.join(notify_ids, os.environ['PUSHOVER_CLIENTS'].split(',')):
-        #    pushover.Client(client).send_message(f'nichts ausgeliehen {username} ({e})')
         return []
     return allinfo