diff --git a/front/js/common.js b/front/js/common.js
index 675c36e3..8e7b0365 100755
--- a/front/js/common.js
+++ b/front/js/common.js
@@ -369,13 +369,15 @@ function getLangCode() {
     return lang_code;
 }
 
-
+  const tz = getSetting("TIMEZONE") || 'Europe/Berlin';
+  const LOCALE = getSetting('UI_LOCALE') || 'en-GB';
 
 // -----------------------------------------------------------------------------
 // String utilities
 // -----------------------------------------------------------------------------
 function localizeTimestamp(input) {
-  let tz = getSetting("TIMEZONE") || 'Europe/Berlin';
+
+
   input = String(input || '').trim();
 
   // 1. Unix timestamps (10 or 13 digits)
@@ -450,7 +452,7 @@ function localizeTimestamp(input) {
       console.error(`ERROR: Couldn't parse date: '${str}' with TIMEZONE ${tz}`);
       return 'Failed conversion - Check browser console';
     }
-    return new Intl.DateTimeFormat('default', {
+    return new Intl.DateTimeFormat(LOCALE, {
       timeZone: tz,
       year: 'numeric', month: '2-digit', day: '2-digit',
       hour: '2-digit', minute: '2-digit', second: '2-digit',
diff --git a/front/plugins/ui_settings/config.json b/front/plugins/ui_settings/config.json
index aeb14706..20fc84df 100755
--- a/front/plugins/ui_settings/config.json
+++ b/front/plugins/ui_settings/config.json
@@ -26,6 +26,34 @@
   ],
   "params": [],
   "settings": [
+    {
+      "function": "LOCALE",
+      "type": {
+        "dataType": "string",
+        "elements": [
+          {
+            "elementType": "input",
+            "elementOptions": [],
+            "transformers": []
+          }
+        ]
+      },
+      "default_value": "en-GB",
+      "options": [],
+      "localized": ["name", "description"],
+      "name": [
+        {
+          "language_code": "en_us",
+          "string": "Locale"
+        }
+      ],
+      "description": [
+        {
+          "language_code": "en_us",
+          "string": "The locale used to format dates that are displayed in the UI."
+        }
+      ]
+    },
     {
       "function": "NOT_RANDOM_MAC",
       "type": {