diff --git a/tests/api/common/test_delete_dag.py b/tests/api/common/test_delete_dag.py
index d9dc0b0a01c7f..e18aceb2d80d4 100644
--- a/tests/api/common/test_delete_dag.py
+++ b/tests/api/common/test_delete_dag.py
@@ -19,11 +19,12 @@
 
 import pytest
 
+import datetime
+import pendulum
 from airflow import models
 from airflow.api.common.delete_dag import delete_dag
 from airflow.exceptions import AirflowException, DagNotFound
 from airflow.operators.dummy import DummyOperator
-from airflow.utils.dates import days_ago
 from airflow.utils.session import create_session
 from airflow.utils.state import State
 from airflow.utils.types import DagRunType
@@ -73,11 +74,11 @@ def setup_dag_models(self, for_sub_dag=False):
 
         task = DummyOperator(
             task_id='dummy',
-            dag=models.DAG(dag_id=self.key, default_args={'start_date': days_ago(2)}),
+            dag=models.DAG(dag_id=self.key, default_args={'start_date': pendulum.datetime(2022, 1, 1)}),
             owner='airflow',
         )
 
-        test_date = days_ago(1)
+        test_date = datetime.datetime(2022, 1, 1)
         with create_session() as session:
             session.add(DM(dag_id=self.key, fileloc=self.dag_file_path, is_subdag=for_sub_dag))
             dr = DR(dag_id=self.key, run_type=DagRunType.MANUAL, run_id="test", execution_date=test_date)
diff --git a/tests/api/common/test_mark_tasks.py b/tests/api/common/test_mark_tasks.py
index fd14a77c1f06e..c57f93150c956 100644
--- a/tests/api/common/test_mark_tasks.py
+++ b/tests/api/common/test_mark_tasks.py
@@ -16,7 +16,7 @@
 # specific language governing permissions and limitations
 # under the License.
 
-from datetime import timedelta
+from datetime import datetime,timedelta
 
 import pytest
 from sqlalchemy.orm import eagerload
@@ -32,7 +32,6 @@
 )
 from airflow.models import DagRun
 from airflow.utils import timezone
-from airflow.utils.dates import days_ago
 from airflow.utils.session import create_session, provide_session
 from airflow.utils.state import State
 from airflow.utils.types import DagRunType
@@ -58,7 +57,7 @@ def create_dags(cls, dagbag):
         cls.dag1 = dagbag.get_dag('miscellaneous_test_dag')
         cls.dag2 = dagbag.get_dag('example_subdag_operator')
         cls.dag3 = dagbag.get_dag('example_trigger_target_dag')
-        cls.execution_dates = [days_ago(2), days_ago(1)]
+        cls.execution_dates = [datetime.datetime(2022, 1, 1), datetime.datetime(2022, 1, 1)]
         start_date3 = cls.dag3.start_date
         cls.dag3_execution_dates = [
             start_date3,
@@ -425,7 +424,7 @@ def setup_class(cls):
         cls.dag1.sync_to_db()
         cls.dag2 = dagbag.dags['example_subdag_operator']
         cls.dag2.sync_to_db()
-        cls.execution_dates = [days_ago(2), days_ago(1), days_ago(0)]
+        cls.execution_dates = [datetime.datetime(2022, 1, 1), datetime.datetime(2022, 1, 1), datetime.datetime(2022, 1, 1)]
 
     def setup_method(self):
         clear_db_runs()
diff --git a/tests/api_connexion/endpoints/test_extra_link_endpoint.py b/tests/api_connexion/endpoints/test_extra_link_endpoint.py
index 4d53119ebdb7c..5e48da5cf764e 100644
--- a/tests/api_connexion/endpoints/test_extra_link_endpoint.py
+++ b/tests/api_connexion/endpoints/test_extra_link_endpoint.py
@@ -16,7 +16,7 @@
 # under the License.
 import os
 from urllib.parse import quote_plus
-
+import pendulum
 import pytest
 from parameterized import parameterized
 
@@ -29,7 +29,6 @@
 from airflow.plugins_manager import AirflowPlugin
 from airflow.providers.google.cloud.operators.bigquery import BigQueryExecuteQueryOperator
 from airflow.security import permissions
-from airflow.utils.dates import days_ago
 from airflow.utils.timezone import datetime
 from airflow.utils.types import DagRunType
 from tests.test_utils.api_connexion_utils import create_user, delete_user
@@ -95,7 +94,7 @@ def _create_dag():
         with DAG(
             dag_id="TEST_DAG_ID",
             default_args=dict(
-                start_date=days_ago(2),
+                start_date=pendulum.datetime(2022, 1, 1),
             ),
         ) as dag:
             BigQueryExecuteQueryOperator(task_id="TEST_SINGLE_QUERY", sql="SELECT 1")
diff --git a/tests/cli/commands/test_task_command.py b/tests/cli/commands/test_task_command.py
index 3cf5bae7787bd..04d89e8aad266 100644
--- a/tests/cli/commands/test_task_command.py
+++ b/tests/cli/commands/test_task_command.py
@@ -30,6 +30,7 @@
 import pytest
 from parameterized import parameterized
 
+import datetime
 from airflow import DAG
 from airflow.cli import cli_parser
 from airflow.cli.commands import task_command
@@ -37,14 +38,13 @@
 from airflow.exceptions import AirflowException, DagRunNotFound
 from airflow.models import DagBag, DagRun, TaskInstance
 from airflow.utils import timezone
-from airflow.utils.dates import days_ago
 from airflow.utils.session import create_session
 from airflow.utils.state import State
 from airflow.utils.types import DagRunType
 from tests.test_utils.config import conf_vars
 from tests.test_utils.db import clear_db_runs
 
-DEFAULT_DATE = days_ago(1)
+DEFAULT_DATE = datetime.datetime(2022, 1, 1)
 ROOT_FOLDER = os.path.realpath(
     os.path.join(os.path.dirname(os.path.realpath(__file__)), os.pardir, os.pardir)
 )
diff --git a/tests/dag_processing/test_processor.py b/tests/dag_processing/test_processor.py
index d8801c347400d..038111aa7cd96 100644
--- a/tests/dag_processing/test_processor.py
+++ b/tests/dag_processing/test_processor.py
@@ -22,7 +22,7 @@
 from unittest import mock
 from unittest.mock import MagicMock, patch
 from zipfile import ZipFile
-
+import pendulum
 import pytest
 
 from airflow import settings
@@ -34,7 +34,6 @@
 from airflow.models.taskinstance import SimpleTaskInstance
 from airflow.operators.dummy import DummyOperator
 from airflow.utils import timezone
-from airflow.utils.dates import days_ago
 from airflow.utils.session import create_session
 from airflow.utils.state import State
 from airflow.utils.types import DagRunType
@@ -113,7 +112,7 @@ def test_dag_file_processor_sla_miss_callback(self, create_dummy_dag):
 
         # Create dag with a start of 1 day ago, but an sla of 0
         # so we'll already have an sla_miss on the books.
-        test_start_date = days_ago(1)
+        test_start_date = pendulum.datetime(2022, 1, 1)
         dag, task = create_dummy_dag(
             dag_id='test_sla_miss',
             task_id='dummy',
@@ -142,7 +141,7 @@ def test_dag_file_processor_sla_miss_callback_invalid_sla(self, create_dummy_dag
         # Create dag with a start of 1 day ago, but an sla of 0
         # so we'll already have an sla_miss on the books.
         # Pass anything besides a timedelta object to the sla argument.
-        test_start_date = days_ago(1)
+        test_start_date = pendulum.datetime(2022, 1, 1)
         dag, task = create_dummy_dag(
             dag_id='test_sla_miss',
             task_id='dummy',
@@ -170,7 +169,7 @@ def test_dag_file_processor_sla_miss_callback_sent_notification(self, create_dum
 
         # Create dag with a start of 2 days ago, but an sla of 1 day
         # ago so we'll already have an sla_miss on the books
-        test_start_date = days_ago(2)
+        test_start_date = pendulum.datetime(2022, 1, 1)
         dag, task = create_dummy_dag(
             dag_id='test_sla_miss',
             task_id='dummy',
@@ -206,7 +205,7 @@ def test_dag_file_processor_sla_miss_doesnot_raise_integrity_error(self, dag_mak
 
         # Create dag with a start of 2 days ago, but an sla of 1 day
         # ago so we'll already have an sla_miss on the books
-        test_start_date = days_ago(2)
+        test_start_date = pendulum.datetime(2022, 1, 1)
         with dag_maker(
             dag_id='test_sla_miss',
             default_args={'start_date': test_start_date, 'sla': datetime.timedelta(days=1)},
@@ -247,7 +246,7 @@ def test_dag_file_processor_sla_miss_callback_exception(self, mock_stats_incr, c
 
         sla_callback = MagicMock(side_effect=RuntimeError('Could not call function'))
 
-        test_start_date = days_ago(2)
+        test_start_date = pendulum.datetime(2022, 1, 1)
         dag, task = create_dummy_dag(
             dag_id='test_sla_miss',
             task_id='dummy',
@@ -277,7 +276,7 @@ def test_dag_file_processor_only_collect_emails_from_sla_missed_tasks(
     ):
         session = settings.Session()
 
-        test_start_date = days_ago(2)
+        test_start_date = pendulum.datetime(2022, 1, 1)
         email1 = 'test1@test.com'
         dag, task = create_dummy_dag(
             dag_id='test_sla_miss',
@@ -317,7 +316,7 @@ def test_dag_file_processor_sla_miss_email_exception(
         # Mock the callback function so we can verify that it was not called
         mock_send_email.side_effect = RuntimeError('Could not send an email')
 
-        test_start_date = days_ago(2)
+        test_start_date = pendulum.datetime(2022, 1, 1)
         dag, task = create_dummy_dag(
             dag_id='test_sla_miss',
             task_id='dummy',
@@ -347,7 +346,7 @@ def test_dag_file_processor_sla_miss_deleted_task(self, create_dummy_dag):
         """
         session = settings.Session()
 
-        test_start_date = days_ago(2)
+        test_start_date = pendulum.datetime(2022, 1, 1)
         dag, task = create_dummy_dag(
             dag_id='test_sla_miss',
             task_id='dummy',
diff --git a/tests/dags/test_default_views.py b/tests/dags/test_default_views.py
index f30177f356f5c..984c9c1422234 100644
--- a/tests/dags/test_default_views.py
+++ b/tests/dags/test_default_views.py
@@ -16,9 +16,9 @@
 # specific language governing permissions and limitations
 # under the License.
 from airflow.models import DAG
-from airflow.utils.dates import days_ago
+import pendulum
 
-args = {'owner': 'airflow', 'retries': 3, 'start_date': days_ago(2)}
+args = {'owner': 'airflow', 'retries': 3, 'start_date': pendulum.datetime(2022,1,1)}
 
 tree_dag = DAG(
     dag_id='test_tree_view',
diff --git a/tests/dags/test_example_bash_operator.py b/tests/dags/test_example_bash_operator.py
index 5daafc2204bb1..02407c448a766 100644
--- a/tests/dags/test_example_bash_operator.py
+++ b/tests/dags/test_example_bash_operator.py
@@ -15,14 +15,13 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-from datetime import timedelta
-
+from datetime import datetime,timedelta
+import pendulum
 from airflow.models import DAG
 from airflow.operators.bash import BashOperator
 from airflow.operators.dummy import DummyOperator
-from airflow.utils.dates import days_ago
 
-args = {'owner': 'airflow', 'retries': 3, 'start_date': days_ago(2)}
+args = {'owner': 'airflow', 'retries': 3, 'start_date': pendulum.datetime(2022,1,1)}
 
 dag = DAG(
     dag_id='test_example_bash_operator',
diff --git a/tests/jobs/test_backfill_job.py b/tests/jobs/test_backfill_job.py
index 40593d526a328..745214f389411 100644
--- a/tests/jobs/test_backfill_job.py
+++ b/tests/jobs/test_backfill_job.py
@@ -41,7 +41,6 @@
 from airflow.models.taskinstance import TaskInstanceKey
 from airflow.operators.dummy import DummyOperator
 from airflow.utils import timezone
-from airflow.utils.dates import days_ago
 from airflow.utils.session import create_session
 from airflow.utils.state import State
 from airflow.utils.timeout import timeout
@@ -1532,8 +1531,8 @@ def test_mapped_dag(self, dag_id):
 
         job = BackfillJob(
             dag=dag,
-            start_date=days_ago(1),
-            end_date=days_ago(1),
+            start_date= datetime.datetime(2022,1,1),
+            end_date=datetime.datetime(2022,1,1),
             donot_pickle=True,
             executor=SequentialExecutor(),
         )
diff --git a/tests/operators/test_python.py b/tests/operators/test_python.py
index 3bf24929bd047..46b5959656f2a 100644
--- a/tests/operators/test_python.py
+++ b/tests/operators/test_python.py
@@ -25,7 +25,7 @@
 from datetime import date, datetime, timedelta
 from subprocess import CalledProcessError
 from typing import List
-
+import pendulum
 import pytest
 
 from airflow.exceptions import AirflowException
@@ -42,7 +42,6 @@
 )
 from airflow.utils import timezone
 from airflow.utils.context import AirflowContextDeprecationWarning, Context
-from airflow.utils.dates import days_ago
 from airflow.utils.session import create_session
 from airflow.utils.state import State
 from airflow.utils.trigger_rule import TriggerRule
@@ -1134,7 +1133,7 @@ def f():
 DEFAULT_ARGS = {
     "owner": "test",
     "depends_on_past": True,
-    "start_date": days_ago(1),
+    "start_date": pendulum.datetime(2022,1,1),
     "end_date": datetime.today(),
     "schedule_interval": "@once",
     "retries": 1,
diff --git a/tests/test_utils/perf/dags/perf_dag_1.py b/tests/test_utils/perf/dags/perf_dag_1.py
index 3757c7d40e092..83c0590b69d32 100644
--- a/tests/test_utils/perf/dags/perf_dag_1.py
+++ b/tests/test_utils/perf/dags/perf_dag_1.py
@@ -22,11 +22,11 @@
 
 from airflow.models import DAG
 from airflow.operators.bash_operator import BashOperator
-from airflow.utils.dates import days_ago
+import pendulum
 
 args = {
     'owner': 'airflow',
-    'start_date': days_ago(3),
+    'start_date': pendulum.datetime(2022,1,1),
 }
 
 dag = DAG(
diff --git a/tests/test_utils/perf/dags/perf_dag_2.py b/tests/test_utils/perf/dags/perf_dag_2.py
index 208ea49b927df..d5889332b09d1 100644
--- a/tests/test_utils/perf/dags/perf_dag_2.py
+++ b/tests/test_utils/perf/dags/perf_dag_2.py
@@ -22,11 +22,11 @@
 
 from airflow.models import DAG
 from airflow.operators.bash import BashOperator
-from airflow.utils.dates import days_ago
+import pendulum
 
 args = {
     'owner': 'airflow',
-    'start_date': days_ago(3),
+    'start_date': pendulum.datetime(2022,1,1),
 }
 
 dag = DAG(
diff --git a/tests/utils/test_task_group.py b/tests/utils/test_task_group.py
index 3238aec0763a7..82df6a873aafc 100644
--- a/tests/utils/test_task_group.py
+++ b/tests/utils/test_task_group.py
@@ -26,7 +26,6 @@
 from airflow.operators.bash import BashOperator
 from airflow.operators.dummy import DummyOperator
 from airflow.operators.python import PythonOperator
-from airflow.utils.dates import days_ago
 from airflow.utils.task_group import MappedTaskGroup, TaskGroup
 from airflow.www.views import dag_edges, task_group_to_dict
 from tests.models import DEFAULT_DATE
@@ -1027,7 +1026,7 @@ def add_one(i):
     def increment(num):
         return num + 1
 
-    @dag(schedule_interval=None, start_date=days_ago(1), default_args={"owner": "airflow"})
+    @dag(schedule_interval=None, start_date=pendulum.datetime(2022,1,1), default_args={"owner": "airflow"})
     def wrap():
         total_1 = one()
         assert isinstance(total_1, XComArg)