diff --git a/addons/hr_work_entry_contract/models/hr_contract.py b/addons/hr_work_entry_contract/models/hr_contract.py
index 80b5f55c193..d2f6cbb1c4d 100644
--- a/addons/hr_work_entry_contract/models/hr_contract.py
+++ b/addons/hr_work_entry_contract/models/hr_contract.py
@@ -124,7 +124,6 @@ class HrContract(models.Model):
     def _get_contract_work_entries_values(self, date_start, date_stop):
         start_dt = pytz.utc.localize(date_start) if not date_start.tzinfo else date_start
         end_dt = pytz.utc.localize(date_stop) if not date_stop.tzinfo else date_stop
-
         contract_vals = []
         bypassing_work_entry_type_codes = self._get_bypassing_work_entry_type_codes()
 
@@ -253,7 +252,18 @@ class HrContract(models.Model):
         Generate a work_entries list between date_start and date_stop for one contract.
         :return: list of dictionnary.
         """
-        contract_vals = self._get_contract_work_entries_values(date_start, date_stop)
+        if isinstance(date_start, datetime):
+            contract_vals = self._get_contract_work_entries_values(date_start, date_stop)
+        else:
+            contract_vals = []
+            contracts_by_tz = defaultdict(lambda: self.env['hr.contract'])
+            for contract in self:
+                contracts_by_tz[contract.resource_calendar_id.tz] += contract
+            for contract_tz, contracts in contracts_by_tz.items():
+                tz = pytz.timezone(contract_tz) if contract_tz else pytz.utc
+                contract_vals += contracts._get_contract_work_entries_values(
+                    tz.localize(date_start),
+                    tz.localize(date_stop))
 
         # {contract_id: ([dates_start], [dates_stop])}
         mapped_contract_dates = defaultdict(lambda: ([], []))
diff --git a/addons/hr_work_entry_holidays/tests/test_leave.py b/addons/hr_work_entry_holidays/tests/test_leave.py
index 1b0fb8f2766..f7046b5f001 100644
--- a/addons/hr_work_entry_holidays/tests/test_leave.py
+++ b/addons/hr_work_entry_holidays/tests/test_leave.py
@@ -114,7 +114,6 @@ class TestWorkEntryLeave(TestWorkEntryHolidaysBase):
     def test_refuse_approved_leave(self):
         start = datetime(2019, 10, 10, 6, 0)
         end = datetime(2019, 10, 10, 18, 0)
-
         # Setup contract generation state
         contract = self.richard_emp.contract_ids[:1]
         contract.state = 'open'
diff --git a/addons/resource/models/resource_calendar.py b/addons/resource/models/resource_calendar.py
index 8e4f1a20e0a..57094969adf 100644
--- a/addons/resource/models/resource_calendar.py
+++ b/addons/resource/models/resource_calendar.py
@@ -272,7 +272,6 @@ class ResourceCalendar(models.Model):
     def _attendance_intervals_batch(self, start_dt, end_dt, resources=None, domain=None, tz=None, lunch=False):
         assert start_dt.tzinfo and end_dt.tzinfo
         self.ensure_one()
-
         if not resources:
             resources = self.env['resource.resource']
             resources_list = [resources]
@@ -340,6 +339,7 @@ class ResourceCalendar(models.Model):
                 else:
                     base_result.append((day_from, day_to, attendance))
 
+
         # Copy the result localized once per necessary timezone
         # Strictly speaking comparing start_dt < time or start_dt.astimezone(tz) < time
         # should always yield the same result. however while working with dates it is easier
diff --git a/addons/test_resource/tests/test_resource.py b/addons/test_resource/tests/test_resource.py
index ad33358d5a6..e114ef1b86e 100644
--- a/addons/test_resource/tests/test_resource.py
+++ b/addons/test_resource/tests/test_resource.py
@@ -532,6 +532,26 @@ class TestCalendar(TestResourceCommon):
         calendar_dt = self.calendar_john._get_closest_work_time(dt, resource=self.john.resource_id)
         self.assertEqual(calendar_dt, start, "It should have found the attendance on the 3rd April")
 
+    def test_attendance_interval_edge_tz(self):
+        # When genereting the attendance intervals in an edge timezone, the last interval shouldn't
+        # be truncated if the timezone is correctly set
+        self.env.user.tz = "America/Los_Angeles"
+        self.calendar_jean.tz = "America/Los_Angeles"
+        attendances = self.calendar_jean._attendance_intervals_batch(
+            datetime.combine(date(2023, 1, 1), datetime.min.time(), tzinfo=timezone("UTC")),
+            datetime.combine(date(2023, 1, 31), datetime.max.time(), tzinfo=timezone("UTC")))
+        last_attendance = list(attendances[False])[-1]
+        self.assertEqual(last_attendance[0].replace(tzinfo=None), datetime(2023, 1, 31, 8))
+        self.assertEqual(last_attendance[1].replace(tzinfo=None), datetime(2023, 1, 31, 15, 59, 59, 999999))
+
+        attendances = self.calendar_jean._attendance_intervals_batch(
+            datetime.combine(date(2023, 1, 1), datetime.min.time(), tzinfo=timezone("America/Los_Angeles")),
+            datetime.combine(date(2023, 1, 31), datetime.max.time(), tzinfo=timezone("America/Los_Angeles")))
+        last_attendance = list(attendances[False])[-1]
+        self.assertEqual(last_attendance[0].replace(tzinfo=None), datetime(2023, 1, 31, 8))
+        self.assertEqual(last_attendance[1].replace(tzinfo=None), datetime(2023, 1, 31, 16))
+
+
 class TestResMixin(TestResourceCommon):
 
     def test_adjust_calendar(self):