diff --git a/app/ui/views/chat_list_view.py b/app/ui/views/chat_list_view.py
index 8841ea0..e5a357b 100644
--- a/app/ui/views/chat_list_view.py
+++ b/app/ui/views/chat_list_view.py
@@ -1,5 +1,5 @@
 from PySide6.QtWidgets import QWidget, QListWidget, QVBoxLayout, QListWidgetItem, QAbstractItemView
-from PySide6.QtCore import Qt, QSize, Signal
+from PySide6.QtCore import Qt, QSize, Signal, QLocale
 from typing import List
 from app.core.models.chat_models import PrivateChatListItem
 from app.ui.widgets.chat_list_item_widget import ChatListItemWidget
@@ -175,7 +175,14 @@ class ChatListView(QWidget):
                 now = datetime.now().astimezone()
                 delta_days = (now.date() - ts_dt.date()).days
                 if delta_days == 0:
-                    display_ts = ts_dt.strftime('%H:%M')
+                    # Respect system 12/24h preference
+                    time_fmt = QLocale.system().timeFormat(QLocale.ShortFormat)
+                    if ('AP' in time_fmt) or ('ap' in time_fmt) or ('a' in time_fmt):
+                        # 12-hour clock
+                        display_ts = ts_dt.strftime('%I:%M %p').lstrip('0')
+                    else:
+                        # 24-hour clock
+                        display_ts = ts_dt.strftime('%H:%M')
                 elif delta_days == 1:
                     display_ts = 'Вчера'
                 elif 1 < delta_days < 7: