fix #1641

src/js/1p-filters.js

@@ -127,9 +127,8 @@ var exportUserFiltersToFile = function() {
     if ( val === '' ) {
         return;
     }
-    var now = new Date();
     var filename = vAPI.i18n('1pExportFilename')
-        .replace('{{datetime}}', now.toLocaleString())
+        .replace('{{datetime}}', uBlockDashboard.dateNowToSensibleString())
         .replace(/ +/g, '_');
     vAPI.download({
         'url': 'data:text/plain;charset=utf-8,' + encodeURIComponent(val + '\n'),

src/js/dashboard-common.js

@@ -1,7 +1,7 @@
 /*******************************************************************************
 
-    µBlock - a browser extension to block requests.
+    uBlock Origin - a browser extension to block requests.
-    Copyright (C) 2014 Raymond Hill
+    Copyright (C) 2014-2016 Raymond Hill
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -103,6 +103,15 @@ self.uBlockDashboard.mergeNewLines = function(text, newText) {
 
 /******************************************************************************/
 
+self.uBlockDashboard.dateNowToSensibleString = function() {
+    var now = new Date(Date.now() - (new Date()).getTimezoneOffset() * 60000);
+    return now.toISOString().replace(/\.\d+Z$/, '')
+                            .replace(/:/g, '.')
+                            .replace('T', '_');
+};
+
+/******************************************************************************/
+
 // Open links in the proper window
 uDom('a').attr('target', '_blank');
 uDom('a[href*="dashboard.html"]').attr('target', '_parent');

src/js/dyna-rules.js

@@ -19,7 +19,7 @@
     Home: https://github.com/gorhill/uMatrix
 */
 
-/* global uDom */
+/* global uDom, uBlockDashboard */
 
 /******************************************************************************/
 
@@ -153,9 +153,8 @@ var startImportFilePicker = function() {
 /******************************************************************************/
 
 function exportUserRulesToFile() {
-    var now = new Date();
     var filename = vAPI.i18n('rulesDefaultFileName')
-        .replace('{{datetime}}', now.toLocaleString())
+        .replace('{{datetime}}', uBlockDashboard.dateNowToSensibleString())
         .replace(/ +/g, '_');
     vAPI.download({
         'url': 'data:text/plain,' + encodeURIComponent(rulesFromHTML('#diff .left li') + '\n'),

src/js/messaging.js

@@ -745,9 +745,8 @@ var backupUserData = function(callback) {
     var onSelectedListsReady = function(filterLists) {
         userData.filterLists = filterLists;
 
-        var now = new Date();
         var filename = vAPI.i18n('aboutBackupFilename')
-            .replace('{{datetime}}', now.toLocaleString())
+            .replace('{{datetime}}', µb.dateNowToSensibleString())
             .replace(/ +/g, '_');
 
         vAPI.download({

src/js/utils.js

@@ -135,6 +135,15 @@
 
 /******************************************************************************/
 
+µBlock.dateNowToSensibleString = function() {
+    var now = new Date(Date.now() - (new Date()).getTimezoneOffset() * 60000);
+    return now.toISOString().replace(/\.\d+Z$/, '')
+                            .replace(/:/g, '.')
+                            .replace('T', '_');
+};
+
+/******************************************************************************/
+
 µBlock.LineIterator = function(text, offset) {
     this.text = text;
     this.textLen = this.text.length;

src/js/whitelist.js

@@ -96,9 +96,8 @@ var exportWhitelistToFile = function() {
     if ( val === '' ) {
         return;
     }
-    var now = new Date();
     var filename = vAPI.i18n('whitelistExportFilename')
-        .replace('{{datetime}}', now.toLocaleString())
+        .replace('{{datetime}}', uBlockDashboard.dateNowToSensibleString())
         .replace(/ +/g, '_');
     vAPI.download({
         'url': 'data:text/plain;charset=utf-8,' + encodeURIComponent(val + '\n'),