diff --git a/apps/reports/tests/test_views.py b/apps/reports/tests/test_views.py
index acfac81..27587c2 100644
--- a/apps/reports/tests/test_views.py
+++ b/apps/reports/tests/test_views.py
@@ -89,10 +89,14 @@ class ReportViewTests(APITestCase):
     def test_member_only_sees_own_chart_report(self):
         self.client.force_authenticate(user=self.member)
 
-        response = self.client.get(
-            "/api/reports/chart/",
-            {"workspace": str(self.workspace.id), "period": "this_month"},
-        )
+        with patch(
+            "apps.reports.services.aggregation.timezone.localdate",
+            return_value=date(2026, 4, 20),
+        ):
+            response = self.client.get(
+                "/api/reports/chart/",
+                {"workspace": str(self.workspace.id), "period": "this_month"},
+            )
 
         self.assertEqual(response.status_code, 200)
         self.assertEqual(response.data["summary"]["total_duration"], "01:00:00")
@@ -100,10 +104,14 @@ class ReportViewTests(APITestCase):
     def test_admin_can_request_combined_table_report(self):
         self.client.force_authenticate(user=self.admin)
 
-        response = self.client.get(
-            "/api/reports/table/",
-            {"workspace": str(self.workspace.id), "period": "this_month"},
-        )
+        with patch(
+            "apps.reports.services.aggregation.timezone.localdate",
+            return_value=date(2026, 4, 20),
+        ):
+            response = self.client.get(
+                "/api/reports/table/",
+                {"workspace": str(self.workspace.id), "period": "this_month"},
+            )
 
         self.assertEqual(response.status_code, 200)
         self.assertEqual(response.data["summary"]["total_duration"], "03:00:00")
@@ -139,14 +147,18 @@ class ReportViewTests(APITestCase):
             currency="USD",
         )
 
-        response = self.client.get(
-            "/api/reports/table/",
-            {
-                "workspace": str(self.workspace.id),
-                "period": "this_month",
-                "user": str(self.owner.id),
-            },
-        )
+        with patch(
+            "apps.reports.services.aggregation.timezone.localdate",
+            return_value=date(2026, 4, 20),
+        ):
+            response = self.client.get(
+                "/api/reports/table/",
+                {
+                    "workspace": str(self.workspace.id),
+                    "period": "this_month",
+                    "user": str(self.owner.id),
+                },
+            )
 
         self.assertEqual(response.status_code, 200)
         target_day = next(day for day in response.data["days"] if day["date"] == "2026-04-15")
@@ -218,14 +230,22 @@ class ReportViewTests(APITestCase):
         url = "/api/reports/table/"
         params = {"workspace": str(self.workspace.id), "period": "this_month"}
 
-        first_response = self.client.get(url, params)
+        with patch(
+            "apps.reports.services.aggregation.timezone.localdate",
+            return_value=date(2026, 4, 20),
+        ):
+            first_response = self.client.get(url, params)
         self.assertEqual(first_response.status_code, 200)
         self.assertEqual(first_response.data["summary"]["total_duration"], "03:00:00")
 
         member_entry = TimeEntry.objects.get(description="Member work")
         TimeEntry.objects.filter(id=member_entry.id).update(duration=timedelta(hours=5))
 
-        cached_response = self.client.get(url, params)
+        with patch(
+            "apps.reports.services.aggregation.timezone.localdate",
+            return_value=date(2026, 4, 20),
+        ):
+            cached_response = self.client.get(url, params)
         self.assertEqual(cached_response.status_code, 200)
         self.assertEqual(cached_response.data["summary"]["total_duration"], "03:00:00")
 
@@ -233,6 +253,10 @@ class ReportViewTests(APITestCase):
         member_entry.description = "Member work updated"
         member_entry.save(update_fields=["description"])
 
-        fresh_response = self.client.get(url, params)
+        with patch(
+            "apps.reports.services.aggregation.timezone.localdate",
+            return_value=date(2026, 4, 20),
+        ):
+            fresh_response = self.client.get(url, params)
         self.assertEqual(fresh_response.status_code, 200)
         self.assertEqual(fresh_response.data["summary"]["total_duration"], "07:00:00")