--- a/toolkit/crashreporter/content/crashes.js
+++ b/toolkit/crashreporter/content/crashes.js
@@ -73,18 +73,24 @@ function populateReportList() {
 
   if (reports.length == 0) {
     document.getElementById("clear-reports").style.display = "none";
     document.getElementById("reportList").style.display = "none";
     document.getElementById("noReports").style.display = "block";
     return;
   }
 
-  var formatter = Cc["@mozilla.org/intl/scriptabledateformat;1"].
-                  createInstance(Ci.nsIScriptableDateFormat);
+  const locale = Cc["@mozilla.org/chrome/chrome-registry;1"]
+                 .getService(Ci.nsIXULChromeRegistry)
+                 .getSelectedLocale("global", true);
+  var dateFormatter = new Intl.DateTimeFormat(locale, { year: '2-digit',
+                                                        month: 'numeric',
+                                                        day: 'numeric' });
+  var timeFormatter = new Intl.DateTimeFormat(locale, { hour: 'numeric',
+                                                        minute: 'numeric' });
   var ios = Cc["@mozilla.org/network/io-service;1"].
             getService(Ci.nsIIOService);
   var reportURI = ios.newURI(reportURL, null, null);
   // resolving this URI relative to /report/index
   var aboutThrottling = ios.newURI("../../about/throttling", null, reportURI);
 
   for (var i = 0; i < reports.length; i++) {
     var row = document.createElement("tr");
@@ -100,30 +106,20 @@ function populateReportList() {
     }
     link.setAttribute("id", reports[i].id);
     link.classList.add("crashReport");
     link.appendChild(document.createTextNode(reports[i].id));
     cell.appendChild(link);
 
     var date = new Date(reports[i].date);
     cell = document.createElement("td");
-    var datestr = formatter.FormatDate("",
-                                       Ci.nsIScriptableDateFormat.dateFormatShort,
-                                       date.getFullYear(),
-                                       date.getMonth() + 1,
-                                       date.getDate());
-    cell.appendChild(document.createTextNode(datestr));
+    cell.appendChild(document.createTextNode(dateFormatter.format(date)));
     row.appendChild(cell);
     cell = document.createElement("td");
-    var timestr = formatter.FormatTime("",
-                                       Ci.nsIScriptableDateFormat.timeFormatNoSeconds,
-                                       date.getHours(),
-                                       date.getMinutes(),
-                                       date.getSeconds());
-    cell.appendChild(document.createTextNode(timestr));
+    cell.appendChild(document.createTextNode(timeFormatter.format(date)));
     row.appendChild(cell);
     if (reports[i].pending) {
       document.getElementById("unsubmitted").appendChild(row);
     } else {
       document.getElementById("submitted").appendChild(row);
     }
   }
 }