diff --git a/api_examples/add_campaign_with_date_times.py b/api_examples/add_campaign_with_date_times.py
new file mode 100644
index 0000000..ceb797b
--- /dev/null
+++ b/api_examples/add_campaign_with_date_times.py
@@ -0,0 +1,144 @@
+#!/usr/bin/env python
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""This example demonstrates how to create a campaign with start and end date times.
+
+This feature was added in v23 of the Google Ads API.
+"""
+
+import argparse
+import sys
+import uuid
+from datetime import datetime, timedelta
+
+from google.ads.googleads.client import GoogleAdsClient
+from google.ads.googleads.errors import GoogleAdsException
+
+
+def main(client, customer_id):
+    """The main method that creates all necessary entities for the example.
+
+    Args:
+        client: an initialized GoogleAdsClient instance.
+        customer_id: a client customer ID.
+    """
+    campaign_budget_service = client.get_service("CampaignBudgetService")
+    campaign_service = client.get_service("CampaignService")
+
+    # Create a budget, which is a required constraint when creating a campaign.
+    campaign_budget_operation = client.get_type("CampaignBudgetOperation")
+    campaign_budget = campaign_budget_operation.create
+    campaign_budget.name = f"Interplanetary Budget {uuid.uuid4()}"
+    campaign_budget.delivery_method = (
+        client.enums.BudgetDeliveryMethodEnum.STANDARD
+    )
+    campaign_budget.amount_micros = 500000
+
+    # Add budget.
+    try:
+        campaign_budget_response = campaign_budget_service.mutate_campaign_budgets(
+            customer_id=customer_id, operations=[campaign_budget_operation]
+        )
+    except GoogleAdsException as ex:
+        _handle_google_ads_exception(ex)
+
+    campaign_budget_resource_name = campaign_budget_response.results[0].resource_name
+    print(
+        f"Created campaign budget with resource name: '{campaign_budget_resource_name}'"
+    )
+
+    # Create campaign.
+    campaign_operation = client.get_type("CampaignOperation")
+    campaign = campaign_operation.create
+    campaign.name = f"Interplanetary Cruise Campaign {uuid.uuid4()}"
+    campaign.advertising_channel_type = (
+        client.enums.AdvertisingChannelTypeEnum.SEARCH
+    )
+
+    # Recommendation: Set the campaign to PAUSED when creating it to prevent
+    # the ads from immediately serving.
+    campaign.status = client.enums.CampaignStatusEnum.PAUSED
+
+    # Set the budget.
+    campaign.campaign_budget = campaign_budget_resource_name
+
+    # Set the network settings.
+    campaign.network_settings.target_google_search = True
+    campaign.network_settings.target_search_network = True
+    campaign.network_settings.target_content_network = False
+    campaign.network_settings.target_partner_search_network = False
+
+    # Optional: Set the start date time and end date time.
+    # Note: These fields are only available in v23 and later.
+    # The format must be 'yyyy-mm-dd hh:mm:ss'.
+    # We will set the start time to 1 day from now, and end time to 30 days from now.
+    now = datetime.now()
+    start_time = now + timedelta(days=1)
+    end_time = now + timedelta(days=31)
+
+    campaign.start_date_time = start_time.strftime("%Y-%m-%d %H:%M:%S")
+    campaign.end_date_time = end_time.strftime("%Y-%m-%d %H:%M:%S")
+
+    # Add the campaign.
+    try:
+        campaign_response = campaign_service.mutate_campaigns(
+            customer_id=customer_id, operations=[campaign_operation]
+        )
+        print(
+            f"Created campaign with resource name: '{campaign_response.results[0].resource_name}'"
+        )
+        print(f"Start date time: {campaign.start_date_time}")
+        print(f"End date time: {campaign.end_date_time}")
+    except GoogleAdsException as ex:
+        _handle_google_ads_exception(ex)
+
+
+def _handle_google_ads_exception(exception):
+    """Prints the details of a GoogleAdsException object.
+
+    Args:
+        exception: an instance of GoogleAdsException.
+    """
+    print(
+        f"Request with ID '{exception.request_id}' failed with status "
+        f"'{exception.error.code().name}' and includes the following errors:"
+    )
+    for error in exception.failure.errors:
+        print(f"\tError with message '{error.message}'.")
+        if error.location:
+            for field_path_element in error.location.field_path_elements:
+                print(f"\t\tOn field: {field_path_element.field_name}")
+    sys.exit(1)
+
+
+if __name__ == "__main__":
+    # GoogleAdsClient will read the google-ads.yaml configuration file in the
+    # home directory if none is specified.
+    googleads_client = GoogleAdsClient.load_from_storage(version="v23")
+
+    parser = argparse.ArgumentParser(
+        description="Creates a campaign with start and end date times."
+    )
+    # The following argument(s) are required to run the example.
+    parser.add_argument(
+        "-c",
+        "--customer_id",
+        type=str,
+        required=True,
+        help="The Google Ads customer ID.",
+    )
+    args = parser.parse_args()
+
+    main(googleads_client, args.customer_id)
diff --git a/api_examples/tests/test_add_campaign_with_date_times.py b/api_examples/tests/test_add_campaign_with_date_times.py
new file mode 100644
index 0000000..5aa983f
--- /dev/null
+++ b/api_examples/tests/test_add_campaign_with_date_times.py
@@ -0,0 +1,89 @@
+#!/usr/bin/env python
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import unittest
+from unittest.mock import MagicMock
+import sys
+import os
+
+# Add the parent directory to sys.path to import the example script
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+# Import the main function from the example script
+# We need to import it as a module to mock it properly
+from api_examples import add_campaign_with_date_times
+
+class TestAddCampaignWithDateTimes(unittest.TestCase):
+    def setUp(self):
+        self.mock_client = MagicMock()
+        self.customer_id = "1234567890"
+
+    def test_main(self):
+        # Mock services
+        mock_campaign_budget_service = MagicMock()
+        mock_campaign_service = MagicMock()
+        
+        def get_service_side_effect(service_name):
+            if service_name == "CampaignBudgetService":
+                return mock_campaign_budget_service
+            elif service_name == "CampaignService":
+                return mock_campaign_service
+            return MagicMock()
+            
+        self.mock_client.get_service.side_effect = get_service_side_effect
+        
+        # Mock types
+        mock_campaign_budget_operation = MagicMock()
+        mock_campaign_operation = MagicMock()
+        
+        def get_type_side_effect(type_name):
+            if type_name == "CampaignBudgetOperation":
+                return mock_campaign_budget_operation
+            elif type_name == "CampaignOperation":
+                return mock_campaign_operation
+            return MagicMock()
+            
+        self.mock_client.get_type.side_effect = get_type_side_effect
+        
+        # Mock Enums
+        self.mock_client.enums.BudgetDeliveryMethodEnum.STANDARD = "STANDARD"
+        self.mock_client.enums.AdvertisingChannelTypeEnum.SEARCH = "SEARCH"
+        self.mock_client.enums.CampaignStatusEnum.PAUSED = "PAUSED"
+        
+        # Mock responses
+        mock_budget_response = MagicMock()
+        mock_budget_response.results = [MagicMock(resource_name="budget_resource_name")]
+        mock_campaign_budget_service.mutate_campaign_budgets.return_value = mock_budget_response
+        
+        mock_campaign_response = MagicMock()
+        mock_campaign_response.results = [MagicMock(resource_name="campaign_resource_name")]
+        mock_campaign_service.mutate_campaigns.return_value = mock_campaign_response
+        
+        # Run main
+        add_campaign_with_date_times.main(self.mock_client, self.customer_id)
+        
+        # Asserts
+        mock_campaign_budget_service.mutate_campaign_budgets.assert_called_once()
+        mock_campaign_service.mutate_campaigns.assert_called_once()
+        
+        # Check if created campaign has start_date_time and end_date_time set
+        created_campaign = mock_campaign_operation.create
+        self.assertTrue(hasattr(created_campaign, "start_date_time"))
+        self.assertTrue(hasattr(created_campaign, "end_date_time"))
+        self.assertIsNotNone(created_campaign.start_date_time)
+        self.assertIsNotNone(created_campaign.end_date_time)
+
+if __name__ == "__main__":
+    unittest.main()