diff --git a/SAS/TMSS/client/lib/tmss_http_rest_client.py b/SAS/TMSS/client/lib/tmss_http_rest_client.py
index 03ae0b2a055e374101f80b4cfdd5051c8964a10d..a23acd265516b2782b1facc01ca1d1a1e919f288 100644
--- a/SAS/TMSS/client/lib/tmss_http_rest_client.py
+++ b/SAS/TMSS/client/lib/tmss_http_rest_client.py
@@ -228,7 +228,7 @@ class TMSSsession(object):
 
     def get_subtasks(self, state: str=None, subtask_type: str=None,
                      cluster: str=None,
-                     scheduled_on_sky_start_time_less_then: datetime=None, scheduled_on_sky_start_time_greater_then: datetime=None,
+                     scheduled_start_time_less_then: datetime=None, scheduled_start_time_greater_then: datetime=None,
                      scheduled_on_sky_stop_time_less_then: datetime = None, scheduled_on_sky_stop_time_greater_then: datetime = None) -> list:
         '''get subtasks (as list of dicts) filtered by the given parameters'''
         clauses = {}
@@ -238,10 +238,10 @@ class TMSSsession(object):
             clauses["subtask_type"] = subtask_type
         if cluster is not None:
             clauses["cluster__name"] = cluster
-        if scheduled_on_sky_start_time_less_then is not None:
-            clauses["scheduled_on_sky_start_time__lt="] = formatDatetime(scheduled_on_sky_start_time_less_then)
-        if scheduled_on_sky_start_time_greater_then is not None:
-            clauses["scheduled_on_sky_start_time__gt"] = formatDatetime(scheduled_on_sky_start_time_greater_then)
+        if scheduled_start_time_less_then is not None:
+            clauses["scheduled_start_time__lt="] = formatDatetime(scheduled_start_time_less_then)
+        if scheduled_start_time_greater_then is not None:
+            clauses["scheduled_start_time__gt"] = formatDatetime(scheduled_start_time_greater_then)
         if scheduled_on_sky_stop_time_less_then is not None:
             clauses["scheduled_on_sky_stop_time__lt"] = formatDatetime(scheduled_on_sky_stop_time_less_then)
         if scheduled_on_sky_stop_time_greater_then is not None:
@@ -419,13 +419,13 @@ class TMSSsession(object):
             return result.content.decode('utf-8')
         raise Exception("Could not specify observation for task %s.\nResponse: %s" % (task_id, result))
 
-    def schedule_subtask(self, subtask_id: int, scheduled_on_sky_start_time: Union[str, datetime]=None, retry_count: int=0) -> {}:
-        """schedule the subtask for the given subtask_id at the given scheduled_on_sky_start_time. If scheduled_on_sky_start_time==None then already (pre)set scheduled_on_sky_start_time is used.
+    def schedule_subtask(self, subtask_id: int, scheduled_start_time: Union[str, datetime]=None, retry_count: int=0) -> {}:
+        """schedule the subtask for the given subtask_id at the given scheduled_start_time. If scheduled_start_time==None then already (pre)set scheduled_start_time is used.
         returns the scheduled subtask upon success, or raises."""
-        if scheduled_on_sky_start_time is not None:
-            if isinstance(scheduled_on_sky_start_time, datetime):
-                scheduled_on_sky_start_time = scheduled_on_sky_start_time.isoformat()
-            self.session.patch(self.get_full_url_for_path('subtask/%s' % subtask_id), json={'scheduled_on_sky_start_time': scheduled_on_sky_start_time})
+        if scheduled_start_time is not None:
+            if isinstance(scheduled_start_time, datetime):
+                scheduled_start_time = scheduled_start_time.isoformat()
+            self.session.patch(self.get_full_url_for_path('subtask/%s' % subtask_id), json={'scheduled_start_time': scheduled_start_time})
         return self.post_to_path_and_get_result_as_json_object('subtask/%s/schedule' % (subtask_id), retry_count=retry_count)
 
     def unschedule_subtask(self, subtask_id: int, retry_count: int=0) -> {}: