diff --git a/lib/db/box_log.dart b/lib/db/box_log.dart
index 4b6a557..d7cad02 100644
--- a/lib/db/box_log.dart
+++ b/lib/db/box_log.dart
@@ -21,6 +21,6 @@ class Log {
       {this.id = 0, DateTime? date, this.uploaded = 0})
       : date = date ?? DateTime.now();
 
-  String get dateFormat => DateFormat('dd/MM/yyyy hh:mm:ss').format(date);
-  String get dateEnFormat => DateFormat('yyyyMMdd hh:mm:ss').format(date);
+  String get dateFormat => DateFormat('dd/MM/yyyy HH:mm:ss').format(date);
+  String get dateEnFormat => DateFormat('yyyyMMdd HH:mm:ss').format(date);
 }
diff --git a/lib/db/box_visit_photo.dart b/lib/db/box_visit_photo.dart
index b633f22..1d22d8e 100644
--- a/lib/db/box_visit_photo.dart
+++ b/lib/db/box_visit_photo.dart
@@ -48,7 +48,7 @@ class VisitPhoto {
       return image_name;
   }
 
-  String get dateFormat => DateFormat('dd.MM.yyyy hh:mm:ss').format(date_photo);
+  String get dateFormat => DateFormat('dd.MM.yyyy HH:mm:ss').format(date_photo);
 
   VisitPhoto copyWith({
     int? id,
diff --git a/lib/main.dart b/lib/main.dart
index 958cad1..f7e743f 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -24,6 +24,18 @@ late ObjectBox objectbox;
 
 final EventBus eventBus = EventBus();
 
+String getCurrentTimeZone(DateTime dateTime) {
+  Duration offset = dateTime.timeZoneOffset;
+  int offsetHours = offset.inHours;
+  int offsetMinutes = offset.inMinutes.remainder(60);
+
+  String offsetSign = offset.isNegative ? '-' : '+';
+  String timeZone =
+      '$offsetSign${offsetHours.abs().toString().padLeft(2, '0')}:${offsetMinutes.abs().toString().padLeft(2, '0')}';
+
+  return timeZone;
+}
+
 Future<void> main() async {
   // This is required so ObjectBox can get the application directory
   // to store the database in.
@@ -49,6 +61,9 @@ Future<void> main() async {
   /// initialize tracker plausible analytics
   await PlausibleUtil.initializePlausible(window.physicalSize.width);
 
+  // initialize time zone current device
+  SharedPrefs().timeZone = getCurrentTimeZone(DateTime.now());
+
   // url MP4
   SharedPrefs().urlMP4 =
       'https://mp4.ikksgroup.com/MobilePortal4/index.html#ajax/dashboard.html';
diff --git a/lib/service/shared_prefs.dart b/lib/service/shared_prefs.dart
index 3383ef5..e537bf8 100644
--- a/lib/service/shared_prefs.dart
+++ b/lib/service/shared_prefs.dart
@@ -175,4 +175,11 @@ class SharedPrefs {
   set photoSound(bool value) {
     _sharedPrefs.setBool('key_photo_sound', value);
   }
+
+  /// get/set user time zone
+  String get timeZone => _sharedPrefs.getString('key_timeZone') ?? "";
+
+  set timeZone(String value) {
+    _sharedPrefs.setString('key_timeZone', value);
+  }
 }