diff --git a/app/router/user_session.py b/app/router/user_session.py
index b7b758e..e81c1f1 100644
--- a/app/router/user_session.py
+++ b/app/router/user_session.py
@@ -13,7 +13,7 @@
 @router.post("/")
 async def user_session(user_session: UserSession):
     query_params = user_session.dict()
-    query_params["timestamp"] = datetime.now(timezone.utc).isoformat()
+    query_params["timestamp"] = datetime.now().isoformat()
 
     if query_params["user_type"] == "student":
         user_id_response = student.get_students(