diff --git a/bitbylaw/steps/advoware_cal_sync/calendar_sync_event_step.py b/bitbylaw/steps/advoware_cal_sync/calendar_sync_event_step.py
index c7301362..28ad1fe7 100644
--- a/bitbylaw/steps/advoware_cal_sync/calendar_sync_event_step.py
+++ b/bitbylaw/steps/advoware_cal_sync/calendar_sync_event_step.py
@@ -233,8 +233,17 @@ def parse_times(data, source):
             start_time = data.get('uhrzeitVon') or '09:00:00'
             start_dt = BERLIN_TZ.localize(datetime.datetime.fromisoformat(f"{start_str}T{start_time}"))
         
-        # Use datumBis for end date if available, otherwise datum
-        end_date_str = data.get('datumBis', data.get('datum', ''))
+        # Check if this is a recurring event
+        is_recurring = (data.get('dauertermin', 0) == 1 and 
+                       (data.get('turnus', 0) > 0 or data.get('turnusArt', 0) > 0))
+        
+        if is_recurring:
+            # For recurring events, end date is same as start date (each instance ends on same day)
+            end_date_str = data.get('datum', '')
+        else:
+            # Use datumBis for end date if available, otherwise datum
+            end_date_str = data.get('datumBis', data.get('datum', ''))
+        
         if 'T' in end_date_str:
             base_end_date = end_date_str.split('T')[0]
         else: