diff --git a/helper/bin/showrules.py b/helper/bin/showrules.py
index af722e03..cf45f1ab 100755
--- a/helper/bin/showrules.py
+++ b/helper/bin/showrules.py
@@ -1,5 +1,10 @@
 #!/usr/bin/env python3
 
+#
+# (C) 2023 Heinlein Support GmbH - License: GNU General Public License v2
+# Robert Sander <r.sander@heinlein-support.de>
+#
+
 import sys
 import argparse
 import checkmkapi
diff --git a/helper/bin/timeperiods.py b/helper/bin/timeperiods.py
new file mode 100755
index 00000000..2858d15a
--- /dev/null
+++ b/helper/bin/timeperiods.py
@@ -0,0 +1,150 @@
+#!/usr/bin/env python3
+
+#
+# (C) 2023 Heinlein Support GmbH - License: GNU General Public License v2
+# Robert Sander <r.sander@heinlein-support.de>
+#
+
+
+
+
+
+import sys
+import argparse
+import checkmkapi
+import requests
+from datetime import date
+from pprint import pprint
+
+apifeiertage = 'https://get.api-feiertage.de/'
+
+laender = {
+    'bb': 'Brandenburg',
+    'be': 'Berlin',
+    'bw': 'Baden-Württemberg',
+    'by': 'Bayern',
+    'hb': 'Bremen',
+    'hh': 'Hamburg',
+    'he': 'Hessen',
+    'mv': 'Mecklenburg-Vorpommern',
+    'ni': 'Niedersachsen',
+    'nw': 'Nordrhein-Westfalen',
+    'rp': 'Rheinland-Pfalz',
+    'sl': 'Saarland',
+    'sn': 'Sachsen',
+    'st': 'Sachsen-Anhalt',
+    'sh': 'Schleswig-Holstein',
+    'th': 'Thüringen',
+}
+
+parser = argparse.ArgumentParser()
+parser.add_argument('-s', '--url', help='URL to Check_MK site')
+parser.add_argument('-u', '--username', help='name of the automation user')
+parser.add_argument('-p', '--password', help='secret of the automation user')
+parser.add_argument('-D', '--debug', action='store_true', required=False)
+subparsers = parser.add_subparsers(title='available commands', help='call "subcommand --help" for more information')
+delete_timeperiod = subparsers.add_parser('delete', help='delete timeperiod')
+delete_timeperiod.set_defaults(func='delete_timeperiod')
+delete_timeperiod.add_argument('name', help='name of timeperiod')
+dump_timeperiods = subparsers.add_parser('dump', help='dump timeperiods')
+dump_timeperiods.set_defaults(func='dump_timeperiods')
+create_timeperiod = subparsers.add_parser('create', help='create timeperiod from api-feiertage.de')
+create_timeperiod.set_defaults(func='create_timeperiod')
+create_timeperiod.add_argument('-a', '--all-states', action='store_true', required=False, help='Nur bundesweite Feiertage')
+create_timeperiod.add_argument('-s', '--state', choices=laender.keys(), help='Bundesland', required=False)
+create_timeperiod.add_argument('-y', '--year', required=False)
+create_timeperiod.add_argument('-c', '--current-year', action='store_true', required=False)
+create_timeperiod.add_argument('-e', '--exclude-in', required=False, help='Exclude in anderer Timeperiod')
+
+args = parser.parse_args()
+if 'func' not in args:
+    parser.print_help()
+    sys.exit(1)
+if args.debug:
+    pprint(args)
+
+cmk = checkmkapi.CMKRESTAPI(args.url, args.username, args.password)
+
+if args.func == 'dump_timeperiods':
+    pprint(cmk.get_timeperiods()[0])
+
+if args.func == 'delete_timeperiod':
+    tp, etag = cmk.get_timeperiod(args.name)
+    cmk.delete_timeperiod(args.name, etag)
+
+if args.func == 'create_timeperiod':
+    params = {}
+    name = 'feiertage_'
+    alias = 'Feiertage '
+    year = None
+    if args.current_year:
+        year = str(date.today().year)
+    elif args.year:
+        year = args.year
+    if year:
+        params['years'] = year
+        name += year
+        alias += year
+    if args.all_states:
+        params['all_states'] = "true"
+        name += '_bundeseinheitlich'
+        alias += ' bundeseinheitlich'
+    elif args.state:
+        params['states'] = args.state
+        name += '_%s' % args.state
+        alias += ' %s' % laender[args.state]
+
+    if args.debug:
+        pprint(params)
+
+    if not params:
+        print('Please give at least a year or a state.\n')
+        create_timeperiod.print_help()
+        sys.exit(1)
+        
+    resp = requests.get(apifeiertage, params=params)
+    if resp.content:
+        try:
+            data = resp.json()
+        except json.decoder.JSONDecodeError:
+            data = resp.content
+    else:
+        data = {}
+    if resp.status_code >= 400:
+        sys.stderr.write("%r\n" % data)
+    
+    if not data.get('feiertage'):
+        print('Error: %s' % data.get('additional_note'))
+        sys.exit(1)
+    else:
+        exceptions = []
+        for feiertag in data['feiertage']:
+            exceptions.append({'date': feiertag['date'], 'time_ranges': [ { 'start': '00:00:00', 'end': '24:00:00' } ]})
+
+        if args.debug:
+            pprint(name)
+            pprint(alias)
+            pprint(exceptions)
+
+        if exceptions:
+            tp, etag = cmk.create_timeperiod(name, alias, [], exceptions=exceptions)
+
+            if args.debug:
+                pprint(tp)
+
+            if args.exclude_in:
+                etp, etag = cmk.get_timeperiod(args.exclude_in)
+
+                if args.debug:
+                    pprint(etp)
+                    pprint(etag)
+
+                exclude = etp['extensions']['exclude']
+                exclude.append(alias)
+
+                if args.debug:
+                    pprint(exclude)
+
+                cmk.edit_timeperiod(args.exclude_in, etag, exclude=exclude)
+
+            cmk.activate_changes()
diff --git a/helper/helper-0.7.0.mkp b/helper/helper-0.7.0.mkp
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index 16dd7169..00000000
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diff --git a/helper/helper-0.8.0.mkp b/helper/helper-0.8.0.mkp
new file mode 100644
index 00000000..92f14fdc
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