diff --git a/SAS/TMSS/backend/services/precalculations_service/lib/precalculations_service.py b/SAS/TMSS/backend/services/precalculations_service/lib/precalculations_service.py
index 94dbc28ff5741abcea276796b7ac5c1c38ca874a..1d4a10455428d2f54034f0931e6861db32a0f404 100644
--- a/SAS/TMSS/backend/services/precalculations_service/lib/precalculations_service.py
+++ b/SAS/TMSS/backend/services/precalculations_service/lib/precalculations_service.py
@@ -33,19 +33,19 @@ NBR_DAYS_CALCULATE_AHEAD = 365    # 1 year
 NBR_DAYS_BEFORE_TODAY = 1
 
 
-def execute_populate_calculations(nbr_days_calculate_ahead, start_date):
+def execute_populate_sunrise_and_sunset_for_all_stations(nbr_days_calculate_ahead, start_date):
     """
     Execute the populate of calculations (sunrise/sunset) for given number of days stating at give date
     :param nbr_days_calculate_ahead: Number of days to calculated
     :param start_date: The date to start calculate
     :return next_date: The next_date to process
     """
-    logger.info("execute_populate_calculations %s for %d days" % (start_date, nbr_days_calculate_ahead))
+    logger.info("execute_populate_sunrise_and_sunset_for_all_stations %s for %d days" % (start_date, nbr_days_calculate_ahead))
     # Import here otherwise you get
     # "django.core.exceptions.ImproperlyConfigured: Requested setting INSTALLED_APPS, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings."
-    from lofar.sas.tmss.tmss.tmssapp.populate import populate_calculations
+    from lofar.sas.tmss.tmss.tmssapp.populate import populate_sunrise_and_sunset_for_all_stations
 
-    populate_calculations(nbr_days=nbr_days_calculate_ahead, start_date=start_date)
+    populate_sunrise_and_sunset_for_all_stations(nbr_days=nbr_days_calculate_ahead, start_date=start_date)
     # Return the next_date to process
     next_date = start_date + datetime.timedelta(days=nbr_days_calculate_ahead)
     return next_date
@@ -84,10 +84,10 @@ class TMSSPreCalculationsServiceJob(threading.Thread):
             remaining_wait_time_in_sec = self.interval.total_seconds() - (time.time() - start_time)
 
 
-def create_calculation_service_job(interval_time, nbr_days_calculate_ahead, nbr_days_before_today):
+def create_service_job_for_sunrise_and_sunset_calculations(interval_time, nbr_days_calculate_ahead, nbr_days_before_today):
     start_date = datetime.date.today() - datetime.timedelta(days=nbr_days_before_today)
     return TMSSPreCalculationsServiceJob(interval=timedelta(seconds=interval_time),
-                                         execute=execute_populate_calculations,
+                                         execute=execute_populate_sunrise_and_sunset_for_all_stations,
                                          nbr_days_calculate_ahead=nbr_days_calculate_ahead, start_date=start_date)
 
 
@@ -119,7 +119,7 @@ def main():
     from lofar.sas.tmss.tmss import setup_and_check_tmss_django_database_connection_and_exit_on_error
     setup_and_check_tmss_django_database_connection_and_exit_on_error(options.dbcredentials)
 
-    job = create_calculation_service_job(options.interval_time, options.nbr_days_calculate_ahead, options.nbr_days_before_today)
+    job = create_service_job_for_sunrise_and_sunset_calculations(options.interval_time, options.nbr_days_calculate_ahead, options.nbr_days_before_today)
     job.start()
     waitForInterrupt()
     job.stop()
diff --git a/SAS/TMSS/backend/services/precalculations_service/test/t_precalculations_service.py b/SAS/TMSS/backend/services/precalculations_service/test/t_precalculations_service.py
index 0648bfd45fd20f335f5521eafffb9a0322060d39..d055b4aad59a871491595e09e870a5838414452b 100644
--- a/SAS/TMSS/backend/services/precalculations_service/test/t_precalculations_service.py
+++ b/SAS/TMSS/backend/services/precalculations_service/test/t_precalculations_service.py
@@ -27,11 +27,8 @@ logging.basicConfig(format='%(asctime)s %(levelname)s %(message)s', level=loggin
 
 from lofar.sas.tmss.test.test_utils import TMSSTestEnvironment
 
-from lofar.sas.tmss.services.precalculations_service import create_calculation_service_job
-from lofar.common.test_utils import integration_test, exit_with_skipped_code_if_skip_integration_tests
-
-exit_with_skipped_code_if_skip_integration_tests()
-
+from lofar.sas.tmss.services.precalculations_service import create_service_job_for_sunrise_and_sunset_calculations
+from lofar.common.test_utils import integration_test
 
 
 @integration_test
@@ -79,7 +76,7 @@ class TestPreCalculationService(unittest.TestCase):
         self.assertEqual(0, len(StationTimeline.objects.all()))
         # Now we are going to create and start the calculation service with a wait time of 60 sec,
         # nbr days to calculate ahead is 1 and nbr days before today 1 ->  so only 'yesterday' should be created
-        job = create_calculation_service_job(60, 1, 1)
+        job = create_service_job_for_sunrise_and_sunset_calculations(60, 1, 1)
         job.start()
         job.stop()
         # Check what have been created
@@ -112,7 +109,7 @@ class TestPreCalculationService(unittest.TestCase):
         # Now we are going to create and start the calculation service with a interval of 60 sec,
         # nbr days to calculate ahead is 4 and nbr days before today 2 ->  so 'day before yesterday, 'yesterday',
         # 'today' and 'tomorrow' should be created
-        job = create_calculation_service_job(60, 4, 2)
+        job = create_service_job_for_sunrise_and_sunset_calculations(60, 4, 2)
         job.start()
         job.stop()
         # Check what have been created
@@ -145,7 +142,7 @@ class TestPreCalculationService(unittest.TestCase):
         # Now we are going to create and start the calculation service with a interval of 10 sec (smaller will not make sense),
         # nbr days to calculate ahead is 1 and nbr days before today 0 ->  so it start with 'today' and after 10 seconds
         # 'tomorrow' etc..,
-        job = create_calculation_service_job(10, 1, 0)
+        job = create_service_job_for_sunrise_and_sunset_calculations(10, 1, 0)
         job.start()
         time.sleep(25)
         job.stop()
@@ -181,7 +178,7 @@ class TestPreCalculationService(unittest.TestCase):
         # Now we are going to create and start the calculation service with an interval of 2 sec
         # nbr days to calculate ahead is 1 and nbr days before today 0 ->  so it start with 'today' and after ~6 seconds
         # 'tomorrow' etc..
-        job = create_calculation_service_job(2, 1, 0)
+        job = create_service_job_for_sunrise_and_sunset_calculations(2, 1, 0)
         job.start()
         time.sleep(10)
         job.stop()
@@ -199,48 +196,6 @@ class TestPreCalculationService(unittest.TestCase):
         self.assertEqual(0, len(st_objects))
 
 
-@integration_test
-class TestPreCalculationServiceWithoutSchemas(unittest.TestCase):
-    """
-    Tests for creation/start/stop of the TMSSPreCalculationsServiceJob when NO schemas exist
-    Check that no exception occur
-    """
-    @classmethod
-    def setUpClass(cls) -> None:
-        """
-        Do not populate schemas
-        """
-        cls.tmss_test_env = TMSSTestEnvironment(populate_schemas=False)
-        cls.tmss_test_env.start()
-        cls.test_data_creator = cls.tmss_test_env.create_test_data_creator()
-
-    @classmethod
-    def tearDownClass(cls) -> None:
-        cls.tmss_test_env.stop()
-
-    def test_no_stations_calculated(self):
-        """
-        Test when no stations exist, the StationTimeLine is empty
-        """
-        # Import here otherwise you get
-        # "django.core.exceptions.ImproperlyConfigured: Requested setting INSTALLED_APPS, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings."
-        from lofar.sas.tmss.tmss.tmssapp.conversions import get_all_stations
-        from lofar.sas.tmss.tmss.tmssapp.models.calculations import StationTimeline
-
-        nbr_stations = len(get_all_stations())
-        self.assertEqual(0, nbr_stations)
-        self.assertEqual(0, len(StationTimeline.objects.all()))
-        # Now we are going to create and start the calculation service with a interval time of 60 sec,
-        # nbr days to calculate ahead is 1 and nbr days before today 1 ->
-        # nothing will be created because there are no stations
-        job = create_calculation_service_job(60, 1, 1)
-        job.start()
-        job.stop()
-        nbr_stations = len(get_all_stations())
-        self.assertEqual(0, nbr_stations)
-        self.assertEqual(0, len(StationTimeline.objects.all()))
-
-
 if __name__ == '__main__':
     #run the unit tests
     unittest.main()
\ No newline at end of file
diff --git a/SAS/TMSS/backend/src/tmss/tmssapp/populate.py b/SAS/TMSS/backend/src/tmss/tmssapp/populate.py
index 90ebaae046d557fe8e9ac311913b0936cd8241a1..68dbb5ab8c2c80cb43cfbc572d1de1f55e3ed7e1 100644
--- a/SAS/TMSS/backend/src/tmss/tmssapp/populate.py
+++ b/SAS/TMSS/backend/src/tmss/tmssapp/populate.py
@@ -68,9 +68,6 @@ def populate_test_data():
             from lofar.sas.tmss.tmss.tmssapp.subtasks import schedule_subtask
             from lofar.common.json_utils import get_default_json_object_for_schema
 
-            # Maybe move to 'migrations populate'
-            #populate_calculations(nbr_days=3)
-
             constraints_template = models.SchedulingConstraintsTemplate.objects.get(name="constraints")
             constraints_spec = get_default_json_object_for_schema(constraints_template.schema)
 
@@ -485,7 +482,7 @@ def populate_system_test_users():
     lta_user.groups.add(Group.objects.get(name='LTA User'))
 
 
-def populate_calculations(nbr_days=3, start_date=date.today()):
+def populate_sunrise_and_sunset_for_all_stations(nbr_days=3, start_date=date.today()):
     """
     Populate station timeline data of all stations for given number of days the starting at given date
     Note: If data is not in database yet, it will take about 6 seconds to calculate it for all (51) stations
diff --git a/SAS/TMSS/backend/test/test_utils.py b/SAS/TMSS/backend/test/test_utils.py
index c03be87745c34382e898f7ea8f962d8db972f186..88c46e4780d91bb23d61fcc6f679c9773903b2d8 100644
--- a/SAS/TMSS/backend/test/test_utils.py
+++ b/SAS/TMSS/backend/test/test_utils.py
@@ -456,10 +456,10 @@ class TMSSTestEnvironment:
         # next service does not have a buslistener, it is just a simple time scheduler and currently rely and
         # populated stations schema to retrieve all stations
         if self._start_precalculations_service:
-            from lofar.sas.tmss.services.precalculations_service import create_calculation_service_job
+            from lofar.sas.tmss.services.precalculations_service import create_service_job_for_sunrise_and_sunset_calculations
             # For testpurposes we can use a smaller range and higher interval frequency
             self.precalculations_service = \
-                create_calculation_service_job(wait_time_seconds=60, nbr_days_calculate_ahead=3, nbr_days_before_today=1)
+                create_service_job_for_sunrise_and_sunset_calculations(wait_time_seconds=60, nbr_days_calculate_ahead=3, nbr_days_before_today=1)
             self.precalculations_service.start()
 
     def stop(self):