diff --git a/app/assets/javascripts/application.js.coffee b/app/assets/javascripts/application.js.coffee
index f01c67e9474..922a28b4ef5 100644
--- a/app/assets/javascripts/application.js.coffee
+++ b/app/assets/javascripts/application.js.coffee
@@ -41,6 +41,7 @@
 #= require shortcuts_issuable
 #= require shortcuts_network
 #= require jquery.nicescroll
+#= require date.format
 #= require_tree .
 #= require fuzzaldrin-plus
 #= require cropper
@@ -163,7 +164,9 @@ $ ->
   $('.trigger-submit').on 'change', ->
     $(@).parents('form').submit()
 
-  $('abbr.timeago, .js-timeago').timeago()
+  $timeago = $('abbr.timeago, .js-timeago')
+  gl.utils.updateFormatDate($timeago)
+  $timeago.timeago()
 
   # Flash
   if (flash = $(".flash-container")).length > 0
diff --git a/app/assets/javascripts/merge_request_tabs.js.coffee b/app/assets/javascripts/merge_request_tabs.js.coffee
index 839e6ec2c08..fdf084a8a82 100644
--- a/app/assets/javascripts/merge_request_tabs.js.coffee
+++ b/app/assets/javascripts/merge_request_tabs.js.coffee
@@ -141,7 +141,9 @@ class @MergeRequestTabs
       url: "#{source}.json"
       success: (data) =>
         document.querySelector("div#commits").innerHTML = data.html
-        $('.js-timeago').timeago()
+        $timeago = $('.js-timeago', 'div#commits')
+        gl.utils.updateFormatDate($timeago)
+        $timeago.timeago()
         @commitsLoaded = true
         @scrollToElement("#commits")
 
@@ -152,7 +154,9 @@ class @MergeRequestTabs
       url: "#{source}.json" + @_location.search
       success: (data) =>
         document.querySelector("div#diffs").innerHTML = data.html
-        $('.js-timeago').timeago()
+        $timeago = $('.js-timeago', 'div#diffs')
+        gl.utils.updateFormatDate($timeago)
+        $timeago.timeago()
         $('div#diffs .js-syntax-highlight').syntaxHighlight()
         @expandViewContainer() if @diffViewType() is 'parallel'
         @diffsLoaded = true
@@ -165,7 +169,9 @@ class @MergeRequestTabs
       url: "#{source}.json"
       success: (data) =>
         document.querySelector("div#builds").innerHTML = data.html
-        $('.js-timeago').timeago()
+        $timeago = $('.js-timeago', 'div#builds')
+        gl.utils.updateFormatDate($timeago)
+        $timeago.timeago()
         @buildsLoaded = true
         @scrollToElement("#builds")
 
diff --git a/app/assets/javascripts/notes.js.coffee b/app/assets/javascripts/notes.js.coffee
index 86e3b860fcb..02e52040e3c 100644
--- a/app/assets/javascripts/notes.js.coffee
+++ b/app/assets/javascripts/notes.js.coffee
@@ -163,9 +163,16 @@ class @Notes
     else if @isNewNote(note)
       @note_ids.push(note.id)
 
-      $('ul.main-notes-list')
+      $notesList = $('ul.main-notes-list')
+
+      $notesList
         .append(note.html)
         .syntaxHighlight()
+
+      # Update datetime format on the recent note
+      $timeago = $notesList.find("#note_#{note.id} .js-timeago")
+      gl.utils.updateFormatDate($timeago)
+
       @initTaskList()
       @updateNotesCount(1)
 
@@ -217,6 +224,8 @@ class @Notes
       # append new note to all matching discussions
       discussionContainer.append note_html
 
+    gl.utils.updateFormatDate($('.js-timeago', note_html))
+
     @updateNotesCount(1)
 
   ###
@@ -345,7 +354,11 @@ class @Notes
   updateNote: (_xhr, note, _status) =>
     # Convert returned HTML to a jQuery object so we can modify it further
     $html = $(note.html)
-    $('.js-timeago', $html).timeago()
+
+    $timeago = $('.js-timeago', $html)
+    gl.utils.updateFormatDate($timeago)
+    $timeago.timeago()
+
     $html.syntaxHighlight()
     $html.find('.js-task-list-container').taskList('enable')