diff --git a/addons/mail/static/src/core/web/message_patch.js b/addons/mail/static/src/core/web/message_patch.js
index 39f9232eadf..64ec5f961af 100644
--- a/addons/mail/static/src/core/web/message_patch.js
+++ b/addons/mail/static/src/core/web/message_patch.js
@@ -17,6 +17,7 @@ patch(Message.prototype, "mail/core/web", {
     setup() {
         this._super(...arguments);
         this.action = useService("action");
+        this.userService = useService("user");
     },
     get authorText() {
         return this.hasAuthorClickable ? _t("Open profile") : undefined;
@@ -72,9 +73,9 @@ patch(Message.prototype, "mail/core/web", {
                 return format.char(trackingValue.value);
             case "date":
                 if (trackingValue.value) {
-                    return luxon.DateTime.fromISO(trackingValue.value, { setZone: "utc" }).toFormat(
-                        "LL/dd/yyyy"
-                    );
+                    return luxon.DateTime.fromISO(trackingValue.value, { zone: "utc" })
+                        .setZone("system")
+                        .toLocaleString({ locale: this.userService.lang.replace("_", "-") });
                 }
                 return format.date(trackingValue.value);
             case "datetime": {