diff --git a/3d Prototyp/Assets/Scenes/GameLoopTest.unity b/3d Prototyp/Assets/Scenes/GameLoopTest.unity
index ae47c011..d3a19376 100644
--- a/3d Prototyp/Assets/Scenes/GameLoopTest.unity	
+++ b/3d Prototyp/Assets/Scenes/GameLoopTest.unity	
@@ -427,7 +427,7 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   _daysUntilRelease: 20
-  _secondsPerDay: 30
+  _secondsPerDay: 20
   _totalTime: 0
   _sun: {fileID: 179279866}
 --- !u!4 &227416519
@@ -461,7 +461,7 @@ GameObject:
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
-  m_IsActive: 1
+  m_IsActive: 0
 --- !u!4 &266099154
 Transform:
   m_ObjectHideFlags: 0
@@ -490,7 +490,7 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   ZombiePrefab: {fileID: 856601670117699726, guid: a34b2d22562c7214f9daf0d3dea8d85c, type: 3}
-  _spawnRate: 10
+  _spawnRate: 2
   _spawnTimer: 0
 --- !u!1001 &514859708
 PrefabInstance:
diff --git a/3d Prototyp/Assets/Scripts/Zeitschaltuhr.cs b/3d Prototyp/Assets/Scripts/Zeitschaltuhr.cs
index 2a7aed0f..67f43e76 100644
--- a/3d Prototyp/Assets/Scripts/Zeitschaltuhr.cs	
+++ b/3d Prototyp/Assets/Scripts/Zeitschaltuhr.cs	
@@ -11,9 +11,17 @@ public class Zeitschaltuhr : MonoBehaviour, ISerializationCallbackReceiver
 {
     private TimeSpan _turnOnTimeSpan;
     private TimeSpan _turnOffTimeSpan;
-    
+    private float _activeTimeSpanInSeconds;
+
+    /// <summary>
+    /// Die Dauer der Active-Time der Kinder in echten Sekunden
+    /// </summary>
+    public float ActiveTimeSpanInSeconds => _activeTimeSpanInSeconds;
+    /// <summary>
+    /// Ob die Kinder gerade aktiv sind oder nicht
+    /// </summary>
     public bool IsOn;
-    
+
     [SerializeField] private SimpleTime _turnOnTime;
     [SerializeField] private SimpleTime _turnOffTime;
     
@@ -39,6 +47,7 @@ public class Zeitschaltuhr : MonoBehaviour, ISerializationCallbackReceiver
 
     void Start()
     {
+        CalculateOnTimeInSeconds();
         UpdateOn();
     }
     
@@ -94,4 +103,23 @@ public class Zeitschaltuhr : MonoBehaviour, ISerializationCallbackReceiver
         _turnOnTimeSpan = _turnOnTime.ToTimeSpan();
         _turnOffTimeSpan = _turnOffTime.ToTimeSpan();
     }
+
+    private void CalculateOnTimeInSeconds()
+    {
+        TimeSpan turnOnTimeSpan = _turnOnTime.ToTimeSpan();
+        TimeSpan turnOffTimeSpan = _turnOffTime.ToTimeSpan();
+
+        float onDurationInSeconds;
+        if (turnOnTimeSpan < turnOffTimeSpan)
+        {
+            onDurationInSeconds = (float)(turnOffTimeSpan - turnOnTimeSpan).TotalSeconds;
+        }
+        else
+        {
+            TimeSpan fullDay = TimeSpan.FromHours(24);
+            onDurationInSeconds = (float)((fullDay - turnOnTimeSpan) + turnOffTimeSpan).TotalSeconds;
+        }
+
+        _activeTimeSpanInSeconds = onDurationInSeconds * ((float)TimeManager.Instance.SecondsPerDay / 86400f); // 86400 Sekunden pro Tag
+    }
 }
diff --git a/3d Prototyp/Assets/Scripts/ZombieSpawner.cs b/3d Prototyp/Assets/Scripts/ZombieSpawner.cs
index 611c661d..1640d3ff 100644
--- a/3d Prototyp/Assets/Scripts/ZombieSpawner.cs	
+++ b/3d Prototyp/Assets/Scripts/ZombieSpawner.cs	
@@ -8,17 +8,17 @@ public class ZombieSpawner : MonoBehaviour
     [SerializeField]
     GameObject ZombiePrefab;
     [SerializeField]
-    private float _spawnRate = 1.0f;
+    private float _spawnRate = 2.0f;
     [SerializeField, ShowOnly]
     private float _spawnTimer;
 
-    private float _secondsPerDay;
+    private float _secondsPerAliveTime;
 
     // Start wird aufgerufen, bevor das erste Frame gezeichnet wird
     void Start()
     {
-        _secondsPerDay = (float)TimeManager.Instance.SecondsPerDay;
-        _spawnTimer = _secondsPerDay / _spawnRate;
+        _secondsPerAliveTime = GetComponentInParent<Zeitschaltuhr>().ActiveTimeSpanInSeconds;
+        _spawnTimer = Random.Range(0.5f * _secondsPerAliveTime / _spawnRate, _secondsPerAliveTime / _spawnRate);
     }
 
     // Update wird einmal pro Frame aufgerufen
@@ -29,7 +29,7 @@ public class ZombieSpawner : MonoBehaviour
         if (_spawnTimer <= 0)
         {
             Instantiate(ZombiePrefab, transform.position, Quaternion.identity, transform);
-            _spawnTimer = _secondsPerDay / _spawnRate;
+            _spawnTimer = _secondsPerAliveTime / _spawnRate;
         }
     }
 
@@ -49,7 +49,12 @@ public class ZombieSpawner : MonoBehaviour
         // Destroy all children (zombies)
         for (int i = 0; i < transform.childCount; i++)
         {
-            Destroy(transform.GetChild(i).gameObject);
+            KillZombiesByDisable();
         }
     }
+
+    private void KillZombiesByDisable()
+    {
+        Destroy(transform.GetChild(i).gameObject);
+    }
 }