diff --git a/examples/solar-monitoring.py b/examples/solar-monitoring.py
index 4cc754e..69e2e6f 100644
--- a/examples/solar-monitoring.py
+++ b/examples/solar-monitoring.py
@@ -44,15 +44,13 @@ import locale
 loc = locale.getlocale()
 print (loc)
 
-datum = input('Datum: ')
-td = datetime.timedelta(int(input('Abstand: ')))
-datum1 = time.strptime(datum, '%Y-%m-%d')
-datum2 = (datetime.datetime.fromtimestamp(time.mktime(datum1)) - td)
-print(datum2.strftime('%Y-%m-%d'))
-  
-print(datum2.strftime('Der Wochentag ist %A'))
-locale.setlocale(locale.LC_ALL, ('de_DE', 'UTF-8'))
-print(datum2.strftime('Der Wochentag ist %A'))
+from datetime import datetime, timedelta 
+# Zwei datetime-Objekte erstellen 
+start_time = datetime(2024, 6, 1, 0, 0, 0) 
+end_time = datetime(2024, 6, 10, 0, 0, 0) 
+# Zeitdelta berechnen 
+duration = end_time - start_time 
+print(duration) # Ausgabe: 9 Tage, 2:30:00
 
 def init_monitor(topics):