diff --git a/pyroengine/core.py b/pyroengine/core.py
index 68f215c..182d241 100644
--- a/pyroengine/core.py
+++ b/pyroengine/core.py
@@ -75,7 +75,7 @@ async def capture_camera_image(camera: ReolinkCamera, image_queue: asyncio.Queue
                 # Move camera to the next pose to avoid waiting
                 next_pos_id = camera.cam_poses[(idx + 1) % len(camera.cam_poses)]
                 camera.move_camera("ToPos", idx=int(next_pos_id), speed=50)
-                if frame is not None:
+                if frame is not None and is_day_time(None, frame, "ir"):
                     await image_queue.put((cam_id, frame))
                     await asyncio.sleep(0)  # Yield control
         else:
@@ -137,17 +137,6 @@ async def analyze_stream(self, image_queue: asyncio.Queue) -> None:
             finally:
                 image_queue.task_done()  # Mark the task as done
 
-    def check_day_time(self) -> None:
-        """
-        Checks and updates the day_time attribute based on the current frame.
-        """
-        try:
-            frame = self.cameras[0].capture()
-            if frame is not None:
-                self.day_time = is_day_time(None, frame, "ir")
-        except Exception as e:
-            logging.exception(f"Exception during initial day time check: {e}")
-
     async def run(self, period: int = 30, send_alerts: bool = True) -> None:
         """
         Captures and analyzes all camera streams, then processes alerts.
@@ -157,7 +146,6 @@ async def run(self, period: int = 30, send_alerts: bool = True) -> None:
             send_alerts (bool): Boolean to activate / deactivate alert sending
         """
         try:
-            self.check_day_time()
 
             if self.day_time:
                 image_queue: asyncio.Queue[Any] = asyncio.Queue()
diff --git a/tests/test_core.py b/tests/test_core.py
index 071fe8a..ef1c4f2 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -16,18 +16,18 @@ def mock_engine():
 
 
 @pytest.fixture
-def mock_cameras():
+def mock_cameras(mock_wildfire_image):
     camera = MagicMock()
-    camera.capture.return_value = Image.new("RGB", (100, 100))  # Mock captured image
+    camera.capture.return_value = mock_wildfire_image  # Mock captured image
     camera.cam_type = "static"
     camera.ip_address = "192.168.1.1"
     return [camera]
 
 
 @pytest.fixture
-def mock_cameras_ptz():
+def mock_cameras_ptz(mock_wildfire_image):
     camera = MagicMock()
-    camera.capture.return_value = Image.new("RGB", (100, 100))  # Mock captured image
+    camera.capture.return_value = mock_wildfire_image  # Mock captured image
     camera.cam_type = "ptz"
     camera.cam_poses = [1, 2]
     camera.ip_address = "192.168.1.1"
@@ -94,9 +94,9 @@ async def test_capture_images_ptz(system_controller_ptz):
 
 
 @pytest.mark.asyncio
-async def test_analyze_stream(system_controller):
+async def test_analyze_stream(system_controller, mock_wildfire_image):
     queue = asyncio.Queue()
-    mock_frame = Image.new("RGB", (100, 100))
+    mock_frame = mock_wildfire_image
     await queue.put(("192.168.1.1", mock_frame))
 
     analyze_task = asyncio.create_task(system_controller.analyze_stream(queue))
@@ -118,9 +118,9 @@ async def test_capture_images_method(system_controller):
 
 
 @pytest.mark.asyncio
-async def test_analyze_stream_method(system_controller):
+async def test_analyze_stream_method(system_controller, mock_wildfire_image):
     queue = asyncio.Queue()
-    mock_frame = Image.new("RGB", (100, 100))
+    mock_frame = mock_wildfire_image
     await queue.put(("192.168.1.1", mock_frame))
     await queue.put(None)  # Signal the end of the stream
 
@@ -129,25 +129,6 @@ async def test_analyze_stream_method(system_controller):
     system_controller.engine.predict.assert_called_once_with(mock_frame, "192.168.1.1")
 
 
-def test_check_day_time(system_controller):
-    with patch("pyroengine.core.is_day_time", return_value=True) as mock_is_day_time:
-        system_controller.check_day_time()
-        assert system_controller.day_time is True
-        mock_is_day_time.assert_called_once()
-
-    with patch("pyroengine.core.is_day_time", return_value=False) as mock_is_day_time:
-        system_controller.check_day_time()
-        assert system_controller.day_time is False
-        mock_is_day_time.assert_called_once()
-
-    with patch("pyroengine.core.is_day_time", side_effect=Exception("Error in is_day_time")) as mock_is_day_time, patch(
-        "pyroengine.core.logging.exception"
-    ) as mock_logging_exception:
-        system_controller.check_day_time()
-        mock_is_day_time.assert_called_once()
-        mock_logging_exception.assert_called_once_with("Exception during initial day time check: Error in is_day_time")
-
-
 def test_repr_method(system_controller):
     repr_str = repr(system_controller)
     # Check if the representation is a string