diff --git a/coverage.sh b/coverage.sh
new file mode 100755
index 0000000..276b6b0
--- /dev/null
+++ b/coverage.sh
@@ -0,0 +1 @@
+pytest --cov=ingestor --cov-report=html && xdg-open htmlcov/index.html
\ No newline at end of file
diff --git a/ingestor/managers/data_manager.py b/ingestor/managers/data_manager.py
index ad65367..28fe065 100644
--- a/ingestor/managers/data_manager.py
+++ b/ingestor/managers/data_manager.py
@@ -1,11 +1,11 @@
 import json
 from time import sleep
-from datetime import datetime, timezone
 from pymongo import MongoClient
 from kafka import KafkaProducer
 from kafka.errors import NoBrokersAvailable
 from sientia_do.notifications.handlers import CoreNotificationHandler as NotificationHandler
 from sientia_do.notifications.models import NotificationLevel
+from sientia_do.temporal.constants import now
 from sientia_do.temporal.activities.base import BaseActivity
 from sientia_do.observability.logger import Logger
 import traceback
@@ -184,7 +184,7 @@ class DataManager(BaseActivity):
             collection.insert_one(
                 {
                     **data,
-                    "inserted_at": datetime.now(timezone.utc),
+                    "inserted_at": now(),
                 }
             )
             self.logger.debug(
diff --git a/ingestor/managers/opc_manager.py b/ingestor/managers/opc_manager.py
index 918a96c..179c23b 100644
--- a/ingestor/managers/opc_manager.py
+++ b/ingestor/managers/opc_manager.py
@@ -6,6 +6,7 @@ from sientia_do.notifications.models import NotificationLevel
 from sientia_do.notifications.handlers import CoreNotificationHandler as NotificationHandler
 from sientia_do.temporal.activities.base import BaseActivity
 from sientia_do.observability.logger import Logger
+from sientia_do.temporal.constants import OPC_TIMEZONE, DATETIME_FORMAT_WITH_TZ
 from ingestor.managers.data_manager import DataManager
 import ingestor.metrics as metrics
 
@@ -261,7 +262,8 @@ class OpcManager(BaseActivity):
         monitored_item = data.monitored_item
         value = monitored_item.Value.Value.Value
         # source_timestamp
-        source_timestamp = monitored_item.Value.SourceTimestamp
+        source_timestamp = monitored_item.Value.SourceTimestamp.replace(
+            tzinfo=OPC_TIMEZONE)
         tag = str(node)
 
         self.logger.debug(
@@ -276,7 +278,7 @@ class OpcManager(BaseActivity):
         data = {
             'tag': tag,
             'name': self.nodes[str(node)]['tag_name'],
-            'timestamp': source_timestamp.strftime('%Y-%m-%d %H:%M:%S'),
+            'timestamp': source_timestamp.strftime(DATETIME_FORMAT_WITH_TZ),
             'value': value
         }
 
diff --git a/requirements.txt b/requirements.txt
index 98ca99a..ecc7949 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 asyncua==1.1.5
 redis
-git+ssh://git@github.com/Aignosi/sientia-dataops-library.git@1.4.1
+git+ssh://git@github.com/Aignosi/sientia-dataops-library.git@1.4.3
 prometheus_client
 pymongo
\ No newline at end of file
diff --git a/tests/unit/managers/test_opc_manager.py b/tests/unit/managers/test_opc_manager.py
index 7f022b7..8f22c31 100644
--- a/tests/unit/managers/test_opc_manager.py
+++ b/tests/unit/managers/test_opc_manager.py
@@ -394,7 +394,7 @@ def test_datachange_notification(metrics, opc_manager_subscribed):
         {
             "tag": "ns=3;i=1001",
             "name": "Counter",
-            "timestamp": "2021-01-01 00:00:00",
+            "timestamp": "2021-01-01 00:00:00-0300",
             "value": 42,
         },
     )
@@ -403,7 +403,7 @@ def test_datachange_notification(metrics, opc_manager_subscribed):
         {
             "tag": "ns=3;i=1001",
             "name": "Counter",
-            "timestamp": "2021-01-01 00:00:00",
+            "timestamp": "2021-01-01 00:00:00-0300",
             "value": 42,
         },
     )
diff --git a/values.yaml b/values.yaml
index 2c2fa76..6c56367 100644
--- a/values.yaml
+++ b/values.yaml
@@ -3,7 +3,7 @@
 # Declare variables to be passed into your templates.
 
 # This will set the replicaset count more information can be found here: https://kubernetes.io/docs/concepts/workloads/controllers/replicaset/
-replicaCount: 3
+replicaCount: 2
 
 # This sets the container image more information can be found here: https://kubernetes.io/docs/concepts/containers/images/
 image:
@@ -11,7 +11,7 @@ image:
   # This sets the pull policy for images.
   pullPolicy: Always
   # Overrides the image tag whose default is the chart appVersion.
-  tag: "0.4.2"
+  tag: "0.4.3"
 
 # This is for the secrets for pulling an image from a private repository more information can be found here: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
 imagePullSecrets:
@@ -139,7 +139,7 @@ env:
   - name: GITHUB_REPO_URL
     value: "git@github.com:Aignosi/sientia-dataops-opc-ingestor.git"
   - name: GITHUB_BRANCH
-    value: "SIENTIAPDE-1199-revisar-e-testar-observabilidade"
+    value: "SIENTIAPDE-1193-conferir-como-a-escrita-de-datetime-ocorre-no-temporal"
   - name: PYTHON_APP
     value: "ingestor.app"
 
@@ -173,6 +173,8 @@ env:
     value: "DEBUG"
   - name: HTTP_METRICS_PORT
     value: "9090"
+  - name: OPC_TIMEZONE
+    value: "UTC"
 
   
   - name: MONGODB_USERNAME