diff --git a/helpdesk/tests/test_time_spent_auto.py b/helpdesk/tests/test_time_spent_auto.py
index 3dba8f25..2ec48e54 100644
--- a/helpdesk/tests/test_time_spent_auto.py
+++ b/helpdesk/tests/test_time_spent_auto.py
@@ -45,7 +45,7 @@ class TimeSpentAutoTestCase(TestCase):
             # friday
             ('2024-03-01T00:00:00+00:00', '2024-03-01T09:30:10+00:00', timedelta(hours=9, minutes=30, seconds=10)),
             ('2024-03-01T00:00:00+00:00', '2024-03-01T23:59:58+00:00', timedelta(hours=23, minutes=59, seconds=58)),
-            ('2024-03-01T00:00:00+00:00', '2024-03-01T23:59:59+00:00', timedelta(hours=24)),
+            ('2024-03-01T00:00:00+00:00', '2024-03-01T23:59:59+00:00', timedelta(hours=23, minutes=59, seconds=59)),
             ('2024-03-01T00:00:00+00:00', '2024-03-02T00:00:00+00:00', timedelta(hours=24)),
             ('2024-03-01T00:00:00+00:00', '2024-03-02T09:00:00+00:00', timedelta(hours=33)),
             ('2024-03-01T00:00:00+00:00', '2024-03-03T00:00:00+00:00', timedelta(hours=48)),
@@ -54,15 +54,15 @@ class TimeSpentAutoTestCase(TestCase):
         for (ticket_time, fup_time, assertion_delta) in TEST_VALUES:
             # create and setup test ticket time
             ticket = Ticket.objects.create(**self.ticket_data)
-            ticket_time = datetime.strptime(ticket_time, "%Y-%m-%dT%H:%M:%S%z")
-            ticket.created = ticket_time
-            ticket.modified = ticket_time
+            ticket_time_p = datetime.strptime(ticket_time, "%Y-%m-%dT%H:%M:%S%z")
+            ticket.created = ticket_time_p
+            ticket.modified = ticket_time_p
             ticket.save()
 
-            fup_time = datetime.strptime(fup_time, "%Y-%m-%dT%H:%M:%S%z")
+            fup_time_p = datetime.strptime(fup_time, "%Y-%m-%dT%H:%M:%S%z")
             followup1 = FollowUp.objects.create(
                 ticket=ticket,
-                date=fup_time,
+                date=fup_time_p,
                 title="Testing followup",
                 comment="Testing followup time spent",
                 public=True,
@@ -76,24 +76,24 @@ class TimeSpentAutoTestCase(TestCase):
             self.assertEqual(followup1.time_spent.total_seconds(), assertion_delta.total_seconds())
             self.assertEqual(ticket.time_spent.total_seconds(), assertion_delta.total_seconds())
 
-            # adding a second follow-up 1 hour later
-            hour_delta = timedelta(hours=1)
-            followup2 = FollowUp.objects.create(
-                ticket=ticket,
-                date=followup1.date + hour_delta,
-                title="Testing followup 2",
-                comment="Testing followup time spent 2",
-                public=True,
-                user=self.user,
-                new_status=1,
-                message_id=uuid.uuid4().hex,
-                time_spent=None
-            )
-            followup2.save()
+            # adding a second follow-up at different intervals
+            for delta in (timedelta(seconds=1), timedelta(minutes=1), timedelta(hours=1), timedelta(days=1), timedelta(days=10)):
+                
+                followup2 = FollowUp.objects.create(
+                    ticket=ticket,
+                    date=followup1.date + delta,
+                    title="Testing followup 2",
+                    comment="Testing followup time spent 2",
+                    public=True,
+                    user=self.user,
+                    new_status=1,
+                    message_id=uuid.uuid4().hex,
+                    time_spent=None
+                )
+                followup2.save()
 
-            # we have a special case with the last second of the day being added if day ends at 23:59:59
-            day_overlap = followup2.date.toordinal() - followup1.date.toordinal()
-            hour_delta = hour_delta - timedelta(seconds=1 * day_overlap)
+                self.assertEqual(followup2.time_spent.total_seconds(), delta.total_seconds())
+                self.assertEqual(ticket.time_spent.total_seconds(), assertion_delta.total_seconds() + delta.total_seconds())
 
-            self.assertEqual(followup2.time_spent.total_seconds(), hour_delta.total_seconds())
-            self.assertEqual(ticket.time_spent.total_seconds(), assertion_delta.total_seconds() + hour_delta.total_seconds())
\ No newline at end of file
+                # delete second follow-up as we test it with many intervals
+                followup2.delete()
\ No newline at end of file