diff --git a/task-sdk/src/airflow/sdk/execution_time/task_runner.py b/task-sdk/src/airflow/sdk/execution_time/task_runner.py
index d4d09c8e20c48..10043b5baad4f 100644
--- a/task-sdk/src/airflow/sdk/execution_time/task_runner.py
+++ b/task-sdk/src/airflow/sdk/execution_time/task_runner.py
@@ -957,9 +957,10 @@ def _on_term(signum, frame):
         # If AirflowFailException is raised, task should not retry.
         # If a sensor in reschedule mode reaches timeout, task should not retry.
         log.exception("Task failed with exception")
+        ti.end_date = datetime.now(tz=timezone.utc)
         msg = TaskState(
             state=TaskInstanceState.FAILED,
-            end_date=datetime.now(tz=timezone.utc),
+            end_date=ti.end_date,
             rendered_map_index=ti.rendered_map_index,
         )
         state = TaskInstanceState.FAILED
@@ -974,9 +975,10 @@ def _on_term(signum, frame):
         # updated already be another UI API. So, these exceptions should ideally never be thrown.
         # If these are thrown, we should mark the TI state as failed.
         log.exception("Task failed with exception")
+        ti.end_date = datetime.now(tz=timezone.utc)
         msg = TaskState(
             state=TaskInstanceState.FAILED,
-            end_date=datetime.now(tz=timezone.utc),
+            end_date=ti.end_date,
             rendered_map_index=ti.rendered_map_index,
         )
         state = TaskInstanceState.FAILED
@@ -1003,10 +1005,12 @@ def _handle_current_task_success(
     context: Context,
     ti: RuntimeTaskInstance,
 ) -> tuple[SucceedTask, TaskInstanceState]:
+    end_date = datetime.now(tz=timezone.utc)
+    ti.end_date = end_date
     task_outlets = list(_build_asset_profiles(ti.task.outlets))
     outlet_events = list(_serialize_outlet_events(context["outlet_events"]))
     msg = SucceedTask(
-        end_date=datetime.now(tz=timezone.utc),
+        end_date=end_date,
         task_outlets=task_outlets,
         outlet_events=outlet_events,
         rendered_map_index=ti.rendered_map_index,
@@ -1018,11 +1022,15 @@ def _handle_current_task_failed(
     ti: RuntimeTaskInstance,
 ) -> tuple[RetryTask, TaskInstanceState] | tuple[TaskState, TaskInstanceState]:
     end_date = datetime.now(tz=timezone.utc)
+    ti.end_date = end_date
     if ti._ti_context_from_server and ti._ti_context_from_server.should_retry:
         return RetryTask(end_date=end_date), TaskInstanceState.UP_FOR_RETRY
-    return TaskState(
-        state=TaskInstanceState.FAILED, end_date=end_date, rendered_map_index=ti.rendered_map_index
-    ), TaskInstanceState.FAILED
+    return (
+        TaskState(
+            state=TaskInstanceState.FAILED, end_date=end_date, rendered_map_index=ti.rendered_map_index
+        ),
+        TaskInstanceState.FAILED,
+    )
 
 
 def _handle_trigger_dag_run(
diff --git a/task-sdk/tests/task_sdk/execution_time/test_task_runner.py b/task-sdk/tests/task_sdk/execution_time/test_task_runner.py
index 2556845dac897..fc64d02fbc72a 100644
--- a/task-sdk/tests/task_sdk/execution_time/test_task_runner.py
+++ b/task-sdk/tests/task_sdk/execution_time/test_task_runner.py
@@ -2566,6 +2566,133 @@ class CustomOperator(BaseOperator):
         assert state == expected_state
         assert collected_results == expected_results
 
+    def test_task_runner_on_failure_callback_context(self, create_runtime_ti):
+        """Test that on_failure_callback context has end_date and duration."""
+        from airflow.exceptions import AirflowException
+
+        def failure_callback(context):
+            ti = context["task_instance"]
+            assert isinstance(ti.end_date, datetime)
+            duration = (ti.end_date - ti.start_date).total_seconds()
+            assert duration is not None
+            assert duration >= 0
+
+        class FailingOperator(BaseOperator):
+            def execute(self, context):
+                raise AirflowException("Failing task")
+
+        task = FailingOperator(task_id="failing_task", on_failure_callback=failure_callback)
+        runtime_ti = create_runtime_ti(dag_id="dag", task=task)
+        log = mock.MagicMock()
+        context = runtime_ti.get_template_context()
+        state, _, error = run(runtime_ti, context, log)
+        finalize(runtime_ti, state, context, log, error)
+
+        assert state == TaskInstanceState.FAILED
+
+    def test_task_runner_on_success_callback_context(self, create_runtime_ti):
+        """Test that on_success_callback context has end_date and duration."""
+        callback_data = {}  # Store callback data for inspection
+
+        def success_callback(context):
+            ti = context["task_instance"]
+            callback_data["end_date"] = ti.end_date
+            callback_data["duration"] = (ti.end_date - ti.start_date).total_seconds() if ti.end_date else None
+            callback_data["start_date"] = ti.start_date
+
+        class SuccessOperator(BaseOperator):
+            def execute(self, context):
+                return "success"
+
+        task = SuccessOperator(task_id="success_task", on_success_callback=success_callback)
+        runtime_ti = create_runtime_ti(dag_id="dag", task=task)
+        log = mock.MagicMock()
+        context = runtime_ti.get_template_context()
+
+        state, _, error = run(runtime_ti, context, log)
+        finalize(runtime_ti, state, context, log, error)
+
+        assert state == TaskInstanceState.SUCCESS
+
+        # Verify callback was called and data was captured
+        assert "end_date" in callback_data, "Success callback should have been called"
+        assert isinstance(callback_data["end_date"], datetime), (
+            f"end_date should be datetime, got {type(callback_data['end_date'])}"
+        )
+        assert callback_data["duration"] is not None, (
+            f"duration should not be None, got {callback_data['duration']}"
+        )
+        assert callback_data["duration"] >= 0, f"duration should be >= 0, got {callback_data['duration']}"
+
+    def test_task_runner_both_callbacks_have_timing_info(self, create_runtime_ti):
+        """Test that both success and failure callbacks receive accurate timing information."""
+        import time
+
+        from airflow.exceptions import AirflowException
+
+        success_data = {}
+        failure_data = {}
+
+        def success_callback(context):
+            ti = context["task_instance"]
+            success_data["end_date"] = ti.end_date
+            success_data["start_date"] = ti.start_date
+            success_data["duration"] = (ti.end_date - ti.start_date).total_seconds() if ti.end_date else None
+
+        def failure_callback(context):
+            ti = context["task_instance"]
+            failure_data["end_date"] = ti.end_date
+            failure_data["start_date"] = ti.start_date
+            failure_data["duration"] = (ti.end_date - ti.start_date).total_seconds() if ti.end_date else None
+
+        # Test success callback
+        class SuccessOperator(BaseOperator):
+            def execute(self, context):
+                time.sleep(0.01)  # Add small delay to ensure measurable duration
+                return "success"
+
+        success_task = SuccessOperator(task_id="success_task", on_success_callback=success_callback)
+        success_runtime_ti = create_runtime_ti(dag_id="dag", task=success_task)
+        success_log = mock.MagicMock()
+        success_context = success_runtime_ti.get_template_context()
+
+        success_state, _, success_error = run(success_runtime_ti, success_context, success_log)
+        finalize(success_runtime_ti, success_state, success_context, success_log, success_error)
+
+        # Test failure callback
+        class FailureOperator(BaseOperator):
+            def execute(self, context):
+                time.sleep(0.01)  # Add small delay to ensure measurable duration
+                raise AirflowException("Test failure")
+
+        failure_task = FailureOperator(task_id="failure_task", on_failure_callback=failure_callback)
+        failure_runtime_ti = create_runtime_ti(dag_id="dag", task=failure_task)
+        failure_log = mock.MagicMock()
+        failure_context = failure_runtime_ti.get_template_context()
+
+        failure_state, _, failure_error = run(failure_runtime_ti, failure_context, failure_log)
+        finalize(failure_runtime_ti, failure_state, failure_context, failure_log, failure_error)
+
+        # Assertions for success callback
+        assert success_state == TaskInstanceState.SUCCESS
+        assert "end_date" in success_data, "Success callback should have been called"
+        assert isinstance(success_data["end_date"], datetime)
+        assert isinstance(success_data["start_date"], datetime)
+        assert success_data["duration"] is not None
+        assert success_data["duration"] >= 0.01, (
+            f"Success duration should be >= 0.01, got {success_data['duration']}"
+        )
+
+        # Assertions for failure callback
+        assert failure_state == TaskInstanceState.FAILED
+        assert "end_date" in failure_data, "Failure callback should have been called"
+        assert isinstance(failure_data["end_date"], datetime)
+        assert isinstance(failure_data["start_date"], datetime)
+        assert failure_data["duration"] is not None
+        assert failure_data["duration"] >= 0.01, (
+            f"Failure duration should be >= 0.01, got {failure_data['duration']}"
+        )
+
     @pytest.mark.parametrize(
         "callback_to_test, execute_impl, should_retry, expected_state, expected_results, extra_exceptions",
         [