diff --git a/js/configurator_main.js b/js/configurator_main.js
index 8bcf3f73..aec07083 100644
--- a/js/configurator_main.js
+++ b/js/configurator_main.js
@@ -78,6 +78,7 @@ $(function() {
             $('a', activeTab).trigger('click');
         }
 
+        globalSettings.store = store;
         globalSettings.unitType = store.get('unit_type', UnitType.none);
         globalSettings.mapProviderType = store.get('map_provider_type', 'osm'); 
         globalSettings.mapApiKey = store.get('map_api_key', '');
@@ -85,6 +86,8 @@ $(function() {
         globalSettings.proxyURL = store.get('proxyurl', 'http://192.168.1.222/mapproxy/service?');
         globalSettings.proxyLayer = store.get('proxylayer', 'your_proxy_layer_name');
         globalSettings.showProfileParameters = store.get('show_profile_parameters', 1);
+        globalSettings.assistnowOfflineData = store.get('assistnow_offline_data', []);
+        globalSettings.assistnowOfflineDate = store.get('assistnow_offline_date', 0);
         updateProfilesHighlightColours();
 
         var cliAutocomplete = store.get('cli_autocomplete', true);
diff --git a/js/globalSettings.js b/js/globalSettings.js
index 96b078fb..cc28ad85 100644
--- a/js/globalSettings.js
+++ b/js/globalSettings.js
@@ -22,6 +22,13 @@ var globalSettings = {
     docsTreeLocation: 'master',
     cliAutocomplete: true,
     assistnowApiKey: null,
+    assistnowOfflineData: [],
+    assistnowOfflineDate: 0,
+    store: null,
+    saveAssistnowData:  function() {
+        this.store.set('assistnow_offline_data', this.assistnowOfflineData);
+        this.store.set('assistnow_offline_date', this.assistnowOfflineDate);
+    }
 };
 
 module.exports = { globalSettings, UnitType };
\ No newline at end of file
diff --git a/js/ublox/UBLOX.js b/js/ublox/UBLOX.js
index bba8bc45..6f3ba937 100644
--- a/js/ublox/UBLOX.js
+++ b/js/ublox/UBLOX.js
@@ -7,6 +7,7 @@ const jBox = require('./../libraries/jBox/jBox.min');
 const i18n = require('./../localization');
 const { GUI } = require('./../gui');
 const { globalSettings } = require('../globalSettings');
+const Store = require('electron-store');
 
 
 var ublox = (function () {
@@ -181,9 +182,16 @@ var ublox = (function () {
         console.log(url);
 
         function processOfflineData(data) {
-            assistnowOffline = splitUbloxData(data);
-            console.log("Assitnow offline commands:" + assistnowOffline.length);
-            callback(assistnowOffline);
+            if(globalSettings.assistnowOfflineData == null || ((Date.now() / 1000)-globalSettings.assistnowOfflineDate) > (60*60*24*3))  {
+                console.log("AssistnowOfflineData older than 3 days, refreshing.");
+                globalSettings.assistnowOfflineData = splitUbloxData(data);
+                globalSettings.assistnowOfflineDate = Math.floor(Date.now() / 1000);
+                globalSettings.saveAssistnowData();
+            } else {
+                console.log("AssitnowOfflineData newer than 3 days. Re-using.");
+            }
+            console.log("Assitnow offline commands:" + globalSettings.assistnowOfflineData.length);
+            callback(globalSettings.assistnowOfflineData);
         }
 
         getBinaryData(url, processOfflineData, loadError);