diff --git a/rails_application/app/controllers/application_controller.rb b/rails_application/app/controllers/application_controller.rb
index 2a070e7f8..a9e87b938 100644
--- a/rails_application/app/controllers/application_controller.rb
+++ b/rails_application/app/controllers/application_controller.rb
@@ -1,4 +1,6 @@
 class ApplicationController < ActionController::Base
+  around_action :set_time_zone
+
   def event_store
     Rails.configuration.event_store
   end
@@ -10,4 +12,10 @@ def command_bus
   def not_found
     render file: "#{Rails.root}/public/404.html", layout: false, status: :not_found
   end
+
+  private
+
+  def set_time_zone(&block)
+    Time.use_zone(cookies[:timezone], &block)
+  end
 end
diff --git a/rails_application/app/javascript/controllers/timezone_controller.js b/rails_application/app/javascript/controllers/timezone_controller.js
new file mode 100644
index 000000000..819f60f4b
--- /dev/null
+++ b/rails_application/app/javascript/controllers/timezone_controller.js
@@ -0,0 +1,15 @@
+// app/javascript/controllers/timezone_controller.js
+import { Controller } from "@hotwired/stimulus"
+
+export default class extends Controller {
+
+  connect() {
+    this.detectAndSetTimezone()
+  }
+
+  detectAndSetTimezone() {
+    const timezone = Intl.DateTimeFormat().resolvedOptions().timeZone
+
+    document.cookie = `timezone=${timezone}`
+  }
+}
diff --git a/rails_application/app/read_models/time_promotions/create_time_promotion.rb b/rails_application/app/read_models/time_promotions/create_time_promotion.rb
index f68ba572b..c811a0419 100644
--- a/rails_application/app/read_models/time_promotions/create_time_promotion.rb
+++ b/rails_application/app/read_models/time_promotions/create_time_promotion.rb
@@ -6,8 +6,8 @@ def call(event)
         <tr class="border-t">
           <td class="py-2">#{time_promotion.label}</td>
           <td class="py-2">#{time_promotion.discount}</td>
-          <td class="py-2">#{time_promotion.start_time}</td>
-          <td class="py-2">#{time_promotion.end_time}</td>
+          <td class="py-2">#{time_promotion.start_time.strftime("%Y-%m-%d %H:%M")}</td>
+          <td class="py-2">#{time_promotion.end_time.strftime(("%Y-%m-%d %H:%M"))}</td>
         </tr>
       HTML
 )
diff --git a/rails_application/app/views/layouts/application.html.erb b/rails_application/app/views/layouts/application.html.erb
index 436c3dda7..35888b61b 100644
--- a/rails_application/app/views/layouts/application.html.erb
+++ b/rails_application/app/views/layouts/application.html.erb
@@ -44,4 +44,5 @@
     </main>
   </body>
   <%= render 'footer' %>
+  <div data-controller="timezone"></div>
 </html>
diff --git a/rails_application/app/views/time_promotions/index.html.erb b/rails_application/app/views/time_promotions/index.html.erb
index 5c848a3c9..1a1a32c2e 100644
--- a/rails_application/app/views/time_promotions/index.html.erb
+++ b/rails_application/app/views/time_promotions/index.html.erb
@@ -24,8 +24,8 @@
     <tr class="border-t">
       <td class="py-2"><%= time_promotion.label %></td>
       <td class="py-2"><%= time_promotion.discount %></td>
-      <td class="py-2"><%= time_promotion.start_time %></td>
-      <td class="py-2"><%= time_promotion.end_time %></td>
+      <td class="py-2"><%= time_promotion.start_time.strftime("%Y-%m-%d %H:%M") %></td>
+      <td class="py-2"><%= time_promotion.end_time.strftime("%Y-%m-%d %H:%M") %></td>
     </tr>
   <% end %>
   </tbody>
diff --git a/rails_application/test/integration/time_promotions_test.rb b/rails_application/test/integration/time_promotions_test.rb
index cacbb3934..a28d0dfd3 100644
--- a/rails_application/test/integration/time_promotions_test.rb
+++ b/rails_application/test/integration/time_promotions_test.rb
@@ -3,37 +3,49 @@
 
 class TimePromotionsTest < InMemoryRESIntegrationTestCase
   def test_happy_path
+    cookies[:timezone] = "Europe/Warsaw"
+
     post "/time_promotions", params: {
       label: "Last Minute June 2022",
       discount: "50",
-      start_time: "2022-06-30 15:00:00 UTC",
-      end_time: "2022-07-01 00:00:00 UTC"
+      start_time: "2022-06-30 15:00",
+      end_time: "2022-07-01 00:00"
     }
     follow_redirect!
     assert_response :success
 
+    time_promotion = TimePromotions::TimePromotion.find_by(label: "Last Minute June 2022")
+
+    assert_equal("2022-06-30 13:00:00 UTC", time_promotion.start_time.to_s)
+    assert_equal("2022-06-30 22:00:00 UTC", time_promotion.end_time.to_s)
+
     assert_select("p", "Time promotion was successfully created")
 
     post "/time_promotions", params: {
       label: "Black Monday July 2022",
       discount: "40",
-      start_time: "2022-07-04 01:00:00 UTC",
-      end_time: "2022-07-05 00:00:00 UTC"
+      start_time: "2022-07-04 01:00:00",
+      end_time: "2022-07-05 00:00:00"
     }
     follow_redirect!
     assert_response :success
 
+    time_promotion = TimePromotions::TimePromotion.find_by(label: "Black Monday July 2022")
+
+    assert_equal("2022-07-03 23:00:00 UTC", time_promotion.start_time.to_s)
+    assert_equal("2022-07-04 22:00:00 UTC", time_promotion.end_time.to_s)
+
     assert_select("p", "Time promotion was successfully created")
 
     get "/time_promotions"
     assert_select("td", "Last Minute June 2022")
     assert_select("td", "50")
-    assert_select("td", "2022-06-30 15:00:00 UTC")
-    assert_select("td", "2022-07-01 00:00:00 UTC")
+    assert_select("td", "2022-06-30 15:00")
+    assert_select("td", "2022-07-01 00:00")
 
     assert_select("td", "Black Monday July 2022")
     assert_select("td", "40")
-    assert_select("td", "2022-07-04 01:00:00 UTC")
-    assert_select("td", "2022-07-05 00:00:00 UTC")
+    assert_select("td", "2022-07-04 01:00")
+    assert_select("td", "2022-07-05 00:00")
   end
 end