diff --git a/filcnaplo/lib/utils/format.dart b/filcnaplo/lib/utils/format.dart
index 4c7f576..72bbaa6 100644
--- a/filcnaplo/lib/utils/format.dart
+++ b/filcnaplo/lib/utils/format.dart
@@ -2,6 +2,7 @@ import 'package:flutter/widgets.dart';
 import 'package:intl/intl.dart';
 import 'package:i18n_extension/i18n_widget.dart';
 import 'package:html/parser.dart';
+import 'format.i18n.dart';
 
 extension StringFormatUtils on String {
   String specialChars() => this
@@ -37,10 +38,10 @@ extension DateFormatUtils on DateTime {
 
     DateTime now = DateTime.now();
     if (this.difference(now).inDays == 0) {
-      if (this.hour == 0 && this.minute == 0 && this.second == 0) return "Today"; // TODO: i18n
+      if (this.hour == 0 && this.minute == 0 && this.second == 0) return "Today".i18n;
       return DateFormat("HH:mm").format(this);
     }
-    if (this.difference(now).inDays == 1) return "Yesterday"; // TODO: i18n
+    if (this.difference(now).inDays == 1) return "Yesterday".i18n;
 
     String formatString;
     if (this.year == now.year)
diff --git a/filcnaplo/lib/utils/format.i18n.dart b/filcnaplo/lib/utils/format.i18n.dart
new file mode 100644
index 0000000..884042d
--- /dev/null
+++ b/filcnaplo/lib/utils/format.i18n.dart
@@ -0,0 +1,24 @@
+import 'package:i18n_extension/i18n_extension.dart';
+
+extension Localization on String {
+  static final _t = Translations.byLocale("hu_hu") +
+      {
+        "en_en": {
+          "Today": "Today",
+          "Yesterday": "Yesterday",
+        },
+        "hu_hu": {
+          "Today": "Ma",
+          "Yesterday": "Tegnap",
+        },
+        "de_de": {
+          "Today": "Heute",
+          "Yesterday": "Gestern",
+        }
+      };
+
+  String get i18n => localize(this, _t);
+  String fill(List<Object> params) => localizeFill(this, params);
+  String plural(int value) => localizePlural(value, this, _t);
+  String version(Object modifier) => localizeVersion(modifier, this, _t);
+}