diff --git a/lib/foreground_task/task_handler.dart b/lib/foreground_task/task_handler.dart
index 0113d9498cb02fa996b29d8ea0de2176c94625fe..8d0d1caef46a997da36d38b64f1730e80914bcb1 100644
--- a/lib/foreground_task/task_handler.dart
+++ b/lib/foreground_task/task_handler.dart
@@ -397,7 +397,7 @@ class ForegroundTaskHandler extends TaskHandler {
       ..sensorTwoDistances = s2Data
       ..sensorOneDistances = s1Data
       ..confirmedIdx = confirmedIdx
-      ..timestamp = now
+      ..timestamp = now.toUtc()
       ..batteryVoltage = 4.0 // TODO: get the battery voltage via ble
       ..latitude = location.latitude
       ..longitude = location.longitude
diff --git a/lib/manager/upload_manger.dart b/lib/manager/upload_manger.dart
index 61360cc4dbad0b5718c8baf72b048cce927298b1..867c5e64f29b566acbf7e33705071c01b98c86aa 100644
--- a/lib/manager/upload_manger.dart
+++ b/lib/manager/upload_manger.dart
@@ -93,7 +93,8 @@ class UploadManager {
       "PrivacyLevelApplied=AbsolutePrivacy",
       "MaximumValidFlightTimeMicroseconds=18560",
       "DistanceSensorsUsed=HC-SR04/JSN-SR04T", // TODO read from db
-      "DeviceId=obs-app-$appVersion"
+      "DeviceId=obs-app-$appVersion",
+      "TimeZone=UTC"
     ];
     return fields.join("&");
   }