diff --git a/app/helpers/posts_helper.rb b/app/helpers/posts_helper.rb
index 4c099c7bc..3e8f35583 100644
--- a/app/helpers/posts_helper.rb
+++ b/app/helpers/posts_helper.rb
@@ -41,4 +41,8 @@ module PostsHelper
       source
     end
   end
+
+  def is_danbirthday?(post)
+    post.id == 1 && post.created_at.strftime("%m-%d") == Time.zone.today.strftime("%m-%d")
+  end
 end
diff --git a/app/javascript/src/styles/specific/posts.scss b/app/javascript/src/styles/specific/posts.scss
index 057e7121e..fba8ce4d4 100644
--- a/app/javascript/src/styles/specific/posts.scss
+++ b/app/javascript/src/styles/specific/posts.scss
@@ -159,6 +159,16 @@ div#c-posts {
 
     .image-container {
       margin: 1em 0 0.5em;
+
+      &.danbirthday::before {
+        content: "";
+        position: absolute;
+        left: 33%;
+        top: -16%;
+        width: 100%;
+        height: 100%;
+        background: top left/20% no-repeat url(../../../../../public/images/danbirthday.png);
+      }
     }
 
     #favlist {
diff --git a/app/views/posts/show.html.erb b/app/views/posts/show.html.erb
index 23d4dbd93..f23d3a8b6 100644
--- a/app/views/posts/show.html.erb
+++ b/app/views/posts/show.html.erb
@@ -44,7 +44,7 @@
 
   <%= render "posts/partials/show/notices", :post => @post %>
 
-  <%= content_tag(:section, class: "image-container note-container", **PostPreviewComponent.new(post: @post).data_attributes) do -%>
+  <%= tag.section class: ["image-container", "note-container", ("danbirthday" if is_danbirthday?(@post))], **PostPreviewComponent.new(post: @post).data_attributes do -%>
     <%= render "posts/partials/show/embedded", post: @post %>
     <div id="note-preview"></div>
   <% end -%>
diff --git a/public/images/danbirthday.png b/public/images/danbirthday.png
new file mode 100755
index 000000000..73c2c4c51
Binary files /dev/null and b/public/images/danbirthday.png differ