diff --git a/static/js/pandora/statisticsDialog.js b/static/js/pandora/statisticsDialog.js
index 007bcc011..e3e26f614 100644
--- a/static/js/pandora/statisticsDialog.js
+++ b/static/js/pandora/statisticsDialog.js
@@ -134,11 +134,11 @@ pandora.ui.statisticsDialog = function() {
                 var city, continent, country, countryData, name = {}, region, split;
                 if (mode == 'all' || item.level != 'guest') {
                     ['firstseen', 'lastseen'].forEach(function(key, i) {
-                        var year = item[key].slice(0, 4) + '-' + key,
-                            month = item[key].slice(0, 7) + '-' + key,
-                            day = item[key].slice(0, 10),
+                        var year = Ox.formatDate(item[key], '%Y') + '-' + key,
+                            month = Ox.formatDate(item[key], '%Y-%m') + '-' + key,
+                            day = Ox.formatDate(item[key], '%Y-%m-%d'),
                             weekday = Ox.formatDate(item[key], '%u'),
-                            hour = item[key].slice(11, 13);
+                            hour = Ox.formatDate(item[key], '%H');
                         data[mode].year[year] = data[mode].year[year] || {};
                         data[mode].year[year][month] = (data[mode].year[year][month] || 0) + 1;                
                         data[mode].month[month] = (data[mode].month[month] || 0) + 1;