diff --git a/ChatServiceApp/js_views.py b/ChatServiceApp/js_views.py
index 318bffb..3658966 100644
--- a/ChatServiceApp/js_views.py
+++ b/ChatServiceApp/js_views.py
@@ -13,6 +13,7 @@ from django.template.loader import render_to_string
 from django.urls import reverse
 from .funcs import *
 import json
+from datetime import datetime, time
 
 
 @login_required(login_url='/profile/login/')
@@ -53,6 +54,8 @@ def update_chat_ajax(request):
     msg = None
     Dict = {}
 
+    last_message_modifiedDT = None
+
     try:
 
         data = json.loads(request.body)
@@ -61,9 +64,12 @@ def update_chat_ajax(request):
         tpl_name = 'blocks/profile/b_messages_container.html'
 
 
-        if 'ticket_id' in data and data['ticket_id']:
+        if 'ticket_id' in data and data['ticket_id'] and data['ticket_id'] != 'null':
             ticket = MsgGroup.objects.get(id=data['ticket_id'])
 
+        if 'last_message_modifiedDT' in data:
+            last_message_modifiedDT = datetime.strptime(data['last_message_modifiedDT'], '%d.%m.%Y %H:%M:%S:%f')
+
         sender = User.objects.get(id=data['sender'])
         receiver = User.objects.get(id=data['receiver'])
 
@@ -77,6 +83,13 @@ def update_chat_ajax(request):
         else:
             msgs = get_msgs_for_chat_w_users(sender, receiver)
 
+        if last_message_modifiedDT:
+            if not msgs or msgs[0].modifiedDT <= last_message_modifiedDT:
+                Dict.update({
+                    'msgs_count': len(msgs)
+                })
+                return JsonResponse(Dict, status=200)
+
 
         res_Dict.update({
             'messages': msgs,
diff --git a/ReferenceDataApp/funcs.py b/ReferenceDataApp/funcs.py
index 120ba73..6e4a15c 100644
--- a/ReferenceDataApp/funcs.py
+++ b/ReferenceDataApp/funcs.py
@@ -58,7 +58,7 @@ def create_airports_by_airportsList(airportsList, city=None):
                 kwargs.update({'iata_code': airport_Dict['iata']})
             airport = Airport.objects.get(**kwargs)
         except Airport.DoesNotExist:
-            print(f' - - {airport_Dict["int_name"]} не найден в БД > добавляем')
+            print(f' - - {airport_Dict["iata"]} не найден в БД > добавляем')
         except Exception as e:
             print(f'error = {str(e)}')
 
diff --git a/templates/blocks/profile/b_messages_container.html b/templates/blocks/profile/b_messages_container.html
index 371c27c..fa855ae 100644
--- a/templates/blocks/profile/b_messages_container.html
+++ b/templates/blocks/profile/b_messages_container.html
@@ -7,8 +7,8 @@
 {% else %}
     {% for msg in messages %}
         {% include "widgets/w_message.html" %}
-        {% if forloop.last %}
-            <span style="display: none" class="date_n_time_last_message" data-modifiedDT="{{ msg.modifiedDT }}"></span>
+        {% if forloop.first %}
+            <span style="display: none" class="date_n_time_last_message" data-modifiedDT="{{ msg.modifiedDT|date:"d.m.Y H:i:s:u" }}"></span>
         {% endif %}
     {% endfor %}
 {% endif %}