diff --git a/app/assets/javascripts/discourse/app/models/bookmark.js b/app/assets/javascripts/discourse/app/models/bookmark.js
index 8926d121c0b..ecefa58e4b1 100644
--- a/app/assets/javascripts/discourse/app/models/bookmark.js
+++ b/app/assets/javascripts/discourse/app/models/bookmark.js
@@ -89,10 +89,17 @@ const Bookmark = RestModel.extend({
 
   @discourseComputed("bumpedAt", "createdAt")
   bumpedAtTitle(bumpedAt, createdAt) {
-    return I18n.t("topic.bumped_at_title", {
-      createdAtDate: longDate(createdAt),
-      bumpedAtDate: longDate(bumpedAt),
-    });
+    const BUMPED_FORMAT = "YYYY-MM-DDTHH:mm:ss";
+    if (moment(bumpedAt).isValid() && moment(createdAt).isValid()) {
+      const bumpedAtStr = moment(bumpedAt).format(BUMPED_FORMAT);
+      const createdAtStr = moment(createdAt).format(BUMPED_FORMAT);
+
+      return bumpedAtStr !== createdAtStr
+        ? `${I18n.t("topic.created_at", {
+            date: longDate(createdAt),
+          })}\n${I18n.t("topic.bumped_at", { date: longDate(bumpedAt) })}`
+        : I18n.t("topic.created_at", { date: longDate(createdAt) });
+    }
   },
 
   @discourseComputed("created_at")
diff --git a/app/assets/javascripts/discourse/app/models/topic.js b/app/assets/javascripts/discourse/app/models/topic.js
index 2c66fdb759b..d166e0373ad 100644
--- a/app/assets/javascripts/discourse/app/models/topic.js
+++ b/app/assets/javascripts/discourse/app/models/topic.js
@@ -127,10 +127,17 @@ const Topic = RestModel.extend({
 
   @discourseComputed("bumpedAt", "createdAt")
   bumpedAtTitle(bumpedAt, createdAt) {
-    return I18n.t("topic.bumped_at_title", {
-      createdAtDate: longDate(createdAt),
-      bumpedAtDate: longDate(bumpedAt),
-    });
+    const BUMPED_FORMAT = "YYYY-MM-DDTHH:mm:ss";
+    if (moment(bumpedAt).isValid() && moment(createdAt).isValid()) {
+      const bumpedAtStr = moment(bumpedAt).format(BUMPED_FORMAT);
+      const createdAtStr = moment(createdAt).format(BUMPED_FORMAT);
+
+      return bumpedAtStr !== createdAtStr
+        ? `${I18n.t("topic.created_at", {
+            date: longDate(createdAt),
+          })}\n${I18n.t("topic.bumped_at", { date: longDate(bumpedAt) })}`
+        : I18n.t("topic.created_at", { date: longDate(createdAt) });
+    }
   },
 
   @discourseComputed("created_at")
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index c5dbe5b15b5..78bde99d0b5 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -3013,9 +3013,8 @@ en:
           other {}
         }
 
-      bumped_at_title: |
-        First post: %{createdAtDate}
-        Posted: %{bumpedAtDate}
+      created_at: "Created: %{date}"
+      bumped_at: "Latest: %{date}"
 
       browse_all_categories_latest: "<a href='%{basePath}/categories'>Browse all categories</a> or <a href='%{basePath}/latest'>view latest topics</a>."
       browse_all_categories_latest_or_top: "<a href='%{basePath}/categories'>Browse all categories</a>, <a href='%{basePath}/latest'>view latest topics</a> or see top:"