diff --git a/tconnectsync/parser/nightscout.py b/tconnectsync/parser/nightscout.py
index 00c6022..d3e39f4 100644
--- a/tconnectsync/parser/nightscout.py
+++ b/tconnectsync/parser/nightscout.py
@@ -200,6 +200,7 @@ class NightscoutEntry:
             "device": ENTERED_BY,
             "created_at": created_at,
             "pump": {
+                "clock": created_at,
                 "battery": {
                     "voltage": float(batteryVoltage),
                     "percent": int(batteryPercent) if batteryPercent else None,
diff --git a/tests/sync/tandemsource/test_process_device_status.py b/tests/sync/tandemsource/test_process_device_status.py
index 7d4e89f..edb2089 100644
--- a/tests/sync/tandemsource/test_process_device_status.py
+++ b/tests/sync/tandemsource/test_process_device_status.py
@@ -37,6 +37,7 @@ class TestProcessDeviceStatus(unittest.TestCase):
             'created_at': '2024-12-03 23:40:23-05:00',
             'device': 'Pump (tconnectsync)',
             'pump': {
+                'clock': '2024-12-03 23:40:23-05:00',
                 'battery': {
                     'status': '48%',
                     'percent': 48,
@@ -90,6 +91,7 @@ class TestProcessDeviceStatus(unittest.TestCase):
             'created_at': '2024-12-04 02:30:23-05:00',
             'device': 'Pump (tconnectsync)',
             'pump': {
+                'clock': '2024-12-04 02:30:23-05:00',
                 'battery': {
                     'status': '47%',
                     'percent': 47,
@@ -133,6 +135,7 @@ class TestProcessDeviceStatus(unittest.TestCase):
             'created_at': '2024-12-04 05:50:23-05:00',
             'device': 'Pump (tconnectsync)',
             'pump': {
+                'clock': '2024-12-04 05:50:23-05:00',
                 'battery': {
                     'status': '46%',
                     'percent': 46,