diff --git a/backend/api/Api.php b/backend/api/Api.php
index 089486a..def2115 100644
--- a/backend/api/Api.php
+++ b/backend/api/Api.php
@@ -2,6 +2,8 @@
 
 namespace mbolli\nfsen_ng\api;
 
+use DateTime;
+use DateTimeZone;
 use mbolli\nfsen_ng\common\Config;
 use mbolli\nfsen_ng\common\Debug;
 
@@ -290,6 +292,7 @@ public function config() {
             'daemon_running' => $daemon_running,
             'frontend' => $frontend,
             'version' => Config::VERSION,
+            'tz_offset' => (new DateTimeZone(date_default_timezone_get()))->getOffset(new DateTime('now', new DateTimeZone('UTC'))),
         ];
     }
 
diff --git a/frontend/js/nfsen-ng.js b/frontend/js/nfsen-ng.js
index 5f7a954..8533f3e 100644
--- a/frontend/js/nfsen-ng.js
+++ b/frontend/js/nfsen-ng.js
@@ -738,9 +738,14 @@ $(document).ready(function() {
                 }
             }
 
+            // Calculate the difference between the server and local timezone offsets
+            var serverTimezoneOffset = config.tz_offset * 60 * 60;
+            var localTimezoneOffset = new Date().getTimezoneOffset() * -60;
+            var timezoneOffset = serverTimezoneOffset - localTimezoneOffset;
+
             // iterate over API result
             $.each(data.data, function (datetime, series) {
-                var position = [new Date(datetime * 1000)];
+                var position = [new Date((parseInt(datetime) + timezoneOffset) * 1000)] ;
 
                 // add all serie values to position array
                 $.each(series, function (y, val) {