diff --git a/app/main.py b/app/main.py
index beb3aff..08fa0f1 100644
--- a/app/main.py
+++ b/app/main.py
@@ -27,6 +27,8 @@ from orm import Origin, Lease, init as db_init, migrate
 logger = logging.getLogger()
 load_dotenv('../version.env')
 
+TZ = datetime.now().astimezone().tzinfo
+
 VERSION, COMMIT, DEBUG = env('VERSION', 'unknown'), env('COMMIT', 'unknown'), bool(env('DEBUG', False))
 
 config = dict(openapi_url='/-/openapi.json', docs_url='/-/docs', redoc_url='/-/redoc')
@@ -101,6 +103,7 @@ async def _config():
         'LEASE_EXPIRE_DELTA': str(LEASE_EXPIRE_DELTA),
         'LEASE_RENEWAL_PERIOD': str(LEASE_RENEWAL_PERIOD),
         'CORS_ORIGINS': str(CORS_ORIGINS),
+        'TZ': str(TZ),
     })
 
 
diff --git a/app/orm.py b/app/orm.py
index aadc0ef..063c12d 100644
--- a/app/orm.py
+++ b/app/orm.py
@@ -1,4 +1,4 @@
-import datetime
+from datetime import datetime, timezone
 
 from sqlalchemy import Column, VARCHAR, CHAR, ForeignKey, DATETIME, update, and_, inspect
 from sqlalchemy.ext.declarative import declarative_base
@@ -86,9 +86,9 @@ class Lease(Base):
             'lease_ref': self.lease_ref,
             'origin_ref': self.origin_ref,
             # 'scope_ref': self.scope_ref,
-            'lease_created': self.lease_created.isoformat(),
-            'lease_expires': self.lease_expires.isoformat(),
-            'lease_updated': self.lease_updated.isoformat(),
+            'lease_created': self.lease_created.replace(tzinfo=timezone.utc).isoformat(),
+            'lease_expires': self.lease_expires.replace(tzinfo=timezone.utc).isoformat(),
+            'lease_updated': self.lease_updated.replace(tzinfo=timezone.utc).isoformat(),
         }
 
     @staticmethod
@@ -133,7 +133,7 @@ class Lease(Base):
         return entity
 
     @staticmethod
-    def renew(engine: Engine, lease: "Lease", lease_expires: datetime.datetime, lease_updated: datetime.datetime):
+    def renew(engine: Engine, lease: "Lease", lease_expires: datetime, lease_updated: datetime):
         session = sessionmaker(bind=engine)()
         x = dict(lease_expires=lease_expires, lease_updated=lease_updated)
         session.execute(update(Lease).where(and_(Lease.origin_ref == lease.origin_ref, Lease.lease_ref == lease.lease_ref)).values(**x))
diff --git a/app/static/assets/js/helper.js b/app/static/assets/js/helper.js
index 90f3e8d..d1fd912 100644
--- a/app/static/assets/js/helper.js
+++ b/app/static/assets/js/helper.js
@@ -49,6 +49,17 @@ async function fetchOriginsWithLeases(element) {
 }
 
 async function fetchLeases(element) {
+    // datetime config
+    const dtc = {
+        year: "numeric",
+        month: "2-digit",
+        day: "2-digit",
+        hour: "2-digit",
+        minute: "2-digit",
+        second: "2-digit",
+        timeZoneName: "short"
+    }
+
     let xhr = new XMLHttpRequest();
     xhr.open("GET", '/-/leases?origin=true', true);
     xhr.onreadystatechange = function () {
@@ -74,9 +85,9 @@ async function fetchLeases(element) {
                 let row = document.createElement('tr');
                 row.innerHTML = `
                         <td><code>${o.lease_ref}</code></td>
-                        <td>${o.lease_created}</td>
-                        <td>${o.lease_updated}</td>
-                        <td>${o.lease_expires}</td>
+                        <td>${new Date(o.lease_created).toLocaleDateString('system', dtc)}</td>
+                        <td>${new Date(o.lease_updated).toLocaleDateString('system', dtc)}</td>
+                        <td>${new Date(o.lease_expires).toLocaleDateString('system', dtc)}</td>
                         <td><code>${o.origin_ref}</code></td>`
                 tbody.appendChild(row);
             })