diff --git a/Changelog.md b/Changelog.md
index 3967191066..a08acff8a9 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -26,6 +26,7 @@
 - Fix version mismatch between container client and database server (#7916)
 - Fixed filter Canvas Test Student from roster sync (#7926)
 - Fix: include original total mark in JSON response for remark requests (#7945)
+- Fixed `(hidden)` assignment labeling for assignments with `visible_on` and/or `visible_until` set (#7944)
 
 ### 🔧 Internal changes
 - Fixed flaky test `can bulk assign duplicated TAs to grade entry students` in `/spec/models/grade_entry_student_spec.rb` (#7958)
diff --git a/app/helpers/assessments_helper.rb b/app/helpers/assessments_helper.rb
new file mode 100644
index 0000000000..234a831e0c
--- /dev/null
+++ b/app/helpers/assessments_helper.rb
@@ -0,0 +1,7 @@
+module AssessmentsHelper
+  def formatted_assessment_visibility_label(assessment, base_text)
+    return t('assignments.hidden', assignment_text: base_text) if assessment.currently_hidden?
+
+    base_text
+  end
+end
diff --git a/app/models/assessment.rb b/app/models/assessment.rb
index f01834018b..d905b4af76 100644
--- a/app/models/assessment.rb
+++ b/app/models/assessment.rb
@@ -89,6 +89,14 @@ def upcoming(*)
     self.due_date > Time.current
   end
 
+  def currently_hidden?
+    return true if is_hidden
+    return true if visible_on.present? && Time.current < visible_on
+    return true if visible_until.present? && Time.current > visible_until
+
+    false
+  end
+
   # Returns grade distribution histogram bins of the grades for this assessment, using the grades in
   # self.completed_result_marks.
   def grade_distribution_array(intervals = 20)
diff --git a/app/views/assignments/_list_manage.html.erb b/app/views/assignments/_list_manage.html.erb
index 20b8842bb5..83d6c5ec24 100644
--- a/app/views/assignments/_list_manage.html.erb
+++ b/app/views/assignments/_list_manage.html.erb
@@ -20,7 +20,7 @@
         <% assignments.each do |assignment| %>
           <% route = { controller: 'assignments', action: action, id: assignment.id } %>
           <% assignment_text = "#{h(assignment.short_identifier)}: #{h(assignment.description)}" %>
-          <% assignment_text = t('assignments.hidden', assignment_text: assignment_text) if assignment.is_hidden %>
+          <% assignment_text = formatted_assessment_visibility_label(assignment, assignment_text) %>
           <tr>
             <td>
               <%= link_to assignment_text, route %>
diff --git a/app/views/courses/_dashboard_list.html.erb b/app/views/courses/_dashboard_list.html.erb
index 5267a612ed..b6151dd0a3 100644
--- a/app/views/courses/_dashboard_list.html.erb
+++ b/app/views/courses/_dashboard_list.html.erb
@@ -14,19 +14,12 @@
         <% @assignments.each do |assignment| -%>
           <tr>
             <td>
-              <% if assignment.is_hidden %>
-                <%= link_to truncate(t('assignments.hidden',
-                                       assignment_text:
-                                         "#{h(assignment.short_identifier)}: #{h(assignment.description)}")),
-                            view_summary_course_assignment_path(@current_course, assignment.id),
-                            data: { remote: true, id: assignment.short_identifier },
-                            class: (assignment.id == @current_assignment.id ? "inactive" : "") %>
-              <% else %>
-                <%= link_to assignment.short_identifier + ': ' + assignment.description,
-                            view_summary_course_assignment_path(@current_course, assignment.id),
-                            data: { remote: true, id: assignment.short_identifier },
-                            class: (assignment.id == @current_assignment.id ? "inactive" : "") %>
-              <% end %>
+              <% assignment_text = formatted_assessment_visibility_label(assignment,
+                                                                        "#{h(assignment.short_identifier)}: #{h(assignment.description)}") %>
+              <%= link_to truncate(assignment_text),
+                          view_summary_course_assignment_path(@current_course, assignment.id),
+                          data: { remote: true, id: assignment.short_identifier },
+                          class: (assignment.id == @current_assignment.id ? "inactive" : "") %>
             </td>
 
             <td>
diff --git a/app/views/layouts/menus/_instructor_ta_sub_menu_assessments.html.erb b/app/views/layouts/menus/_instructor_ta_sub_menu_assessments.html.erb
index 5005f99771..89f58b221b 100644
--- a/app/views/layouts/menus/_instructor_ta_sub_menu_assessments.html.erb
+++ b/app/views/layouts/menus/_instructor_ta_sub_menu_assessments.html.erb
@@ -11,9 +11,7 @@
         <% if assessment.is_a?(Assignment) && assessment.is_peer_review? %>
           <% title = "#{assessment.parent_assignment.short_identifier} #{PeerReview.model_name.human}" %>
         <% end %>
-        <% if assessment.is_hidden %>
-          <% title = t('assignments.hidden', assignment_text: title) %>
-        <% end %>
+        <% title = formatted_assessment_visibility_label(assessment, title) %>
         <%= title %>
       <% end %>
       <ul>
diff --git a/app/views/shared/_assignment_dropdown_link.html.erb b/app/views/shared/_assignment_dropdown_link.html.erb
index 0eaa679989..1795309d6d 100644
--- a/app/views/shared/_assignment_dropdown_link.html.erb
+++ b/app/views/shared/_assignment_dropdown_link.html.erb
@@ -1,8 +1,6 @@
 <li class="<%= active_id == assignment.id ? 'active' : '' %>">
   <% link_text = assignment.short_identifier %>
-  <% if assignment.is_hidden %>
-    <% link_text = t('assignments.hidden', assignment_text: link_text) %>
-  <% end %>
+  <% link_text = formatted_assessment_visibility_label(assignment, link_text) %>
 
   <%= link_to link_text,
               switch_course_assignment_path(@current_course, assignment.id),
diff --git a/doc/markus-contributors.txt b/doc/markus-contributors.txt
index 3915d2ac4e..07ac50d6ac 100644
--- a/doc/markus-contributors.txt
+++ b/doc/markus-contributors.txt
@@ -177,6 +177,7 @@ Parker Hutcheson
 Partoo Vafaeikia
 Paymahn Moghadasian
 Peter Guanjie Zhao
+Philip Kukulak
 Pranav Rao
 Rafael Padilha
 Raine Yang
diff --git a/spec/controllers/assignments_controller_spec.rb b/spec/controllers/assignments_controller_spec.rb
index 88130f18df..090b2c57fd 100644
--- a/spec/controllers/assignments_controller_spec.rb
+++ b/spec/controllers/assignments_controller_spec.rb
@@ -1,5 +1,6 @@
 describe AssignmentsController do
   include AutomatedTestsHelper
+  include ActiveSupport::Testing::TimeHelpers
 
   # TODO: add 'role is from a different course' shared tests to each route test below
 
@@ -410,6 +411,83 @@
     end
   end
 
+  describe '#index rendered visibility labels' do
+    render_views
+
+    let(:role) { create(:instructor) }
+    let(:course) { role.course }
+    let(:current_time) { Time.zone.local(2026, 5, 9, 12, 0, 0) }
+
+    visibility_cases = [
+      { label: 'explicitly hidden', options: -> { { is_hidden: true } }, hidden: true },
+      { label: 'future start', options: -> { { visible_on: 1.day.from_now } }, hidden: true },
+      { label: 'past end', options: -> { { visible_until: 1.day.ago } }, hidden: true },
+      { label: 'window future',
+        options: -> { { visible_on: 1.day.from_now, visible_until: 2.days.from_now } }, hidden: true },
+      { label: 'window expired',
+        options: -> { { visible_on: 2.days.ago, visible_until: 1.day.ago } }, hidden: true },
+      { label: 'plain visible', options: -> { {} }, hidden: false },
+      { label: 'past start', options: -> { { visible_on: 1.day.ago } }, hidden: false },
+      { label: 'future end', options: -> { { visible_until: 1.day.from_now } }, hidden: false },
+      { label: 'window current',
+        options: -> { { visible_on: 1.day.ago, visible_until: 1.day.from_now } }, hidden: false },
+      { label: 'starts now', options: -> { { visible_on: Time.current } }, hidden: false },
+      { label: 'ends now', options: -> { { visible_until: Time.current } }, hidden: false }
+    ]
+
+    before { travel_to current_time }
+
+    visibility_cases.each do |vc|
+      it "renders #{vc[:hidden] ? 'the hidden label' : 'no hidden label'} for #{vc[:label]}" do
+        assignment = create(:assignment, course: course, **vc[:options].call)
+        get_as role, :index, params: { course_id: course.id }
+
+        base_text = "#{assignment.short_identifier}: #{assignment.description}"
+        hidden_text = I18n.t('assignments.hidden', assignment_text: base_text)
+
+        if vc[:hidden]
+          expect(response.body).to include(hidden_text)
+        else
+          expect(response.body).to include(base_text)
+          expect(response.body).not_to include(hidden_text)
+        end
+      end
+    end
+  end
+
+  describe '#edit rendered visibility labels' do
+    render_views
+
+    let(:role) { create(:instructor) }
+    let(:course) { role.course }
+    let(:current_time) { Time.zone.local(2026, 5, 9, 12, 0, 0) }
+    let(:scheduled_target) { create(:assignment, course: course, visible_on: 1.day.from_now) }
+    let(:currently_visible) { create(:assignment, course: course, visible_until: 1.day.from_now) }
+
+    before do
+      travel_to current_time
+      scheduled_target
+      currently_visible
+    end
+
+    it 'renders the hidden label in both the current assignment submenu title and the dropdown list item' do
+      get_as role, :edit, params: { course_id: course.id, id: scheduled_target.id }
+
+      current_title = I18n.t('assignments.hidden', assignment_text: scheduled_target.short_identifier)
+      doc = response.parsed_body
+      dropdown = doc.at_css('li#dropdown > div.dropdown')
+      dropdown_text = dropdown.children.find { |node| node.text? && !node.text.strip.empty? }.text.strip
+      target_path = switch_course_assignment_path(course, scheduled_target.id)
+      visible_path = switch_course_assignment_path(course, currently_visible.id)
+      target_link = dropdown.at_css("ul a[href='#{target_path}'][title='#{scheduled_target.description}']")
+      visible_link = dropdown.at_css("ul a[href='#{visible_path}'][title='#{currently_visible.description}']")
+
+      expect(dropdown_text).to eq(current_title)
+      expect(target_link.text).to eq(current_title)
+      expect(visible_link.text).to eq(currently_visible.short_identifier)
+    end
+  end
+
   describe '#set_boolean_graders_options' do
     let!(:assignment) { create(:assignment) }
 
diff --git a/spec/controllers/courses_controller_spec.rb b/spec/controllers/courses_controller_spec.rb
index 42a3a6d2fc..1fe9233147 100644
--- a/spec/controllers/courses_controller_spec.rb
+++ b/spec/controllers/courses_controller_spec.rb
@@ -1,4 +1,6 @@
 describe CoursesController do
+  include ActiveSupport::Testing::TimeHelpers
+
   let(:instructor) { create(:instructor) }
   let(:course) { instructor.course }
   let(:student) { create(:student, course: course) }
@@ -358,6 +360,53 @@
     end
   end
 
+  describe '#show rendered visibility labels' do
+    render_views
+
+    let(:current_time) { Time.zone.local(2026, 5, 9, 12, 0, 0) }
+
+    # short_identifier and description keep text short so (hidden) is never truncated in _dashboard_list
+    visibility_cases = [
+      { label: 'future start',
+        options: -> { { short_identifier: 'A1', description: 'a', visible_on: 1.day.from_now } },
+        hidden: true },
+      { label: 'past end',
+        options: -> { { short_identifier: 'A2', description: 'a', visible_until: 1.day.ago } },
+        hidden: true },
+      { label: 'plain visible',
+        options: -> { { short_identifier: 'A3', description: 'a' } },
+        hidden: false },
+      { label: 'future end',
+        options: -> { { short_identifier: 'A4', description: 'a', visible_until: 1.day.from_now } },
+        hidden: false },
+      { label: 'starts now',
+        options: -> { { short_identifier: 'A5', description: 'a', visible_on: Time.current } },
+        hidden: false },
+      { label: 'ends now',
+        options: -> { { short_identifier: 'A6', description: 'a', visible_until: Time.current } },
+        hidden: false }
+    ]
+
+    before { travel_to current_time }
+
+    visibility_cases.each do |vc|
+      it "renders #{vc[:hidden] ? 'the hidden label' : 'no hidden label'} for #{vc[:label]}" do
+        assignment = create(:assignment, course: course, **vc[:options].call)
+        get_as instructor, :show, params: { id: course }
+
+        base_text = "#{assignment.short_identifier}: #{assignment.description}"
+        hidden_text = I18n.t('assignments.hidden', assignment_text: base_text)
+
+        if vc[:hidden]
+          expect(response.body).to include(hidden_text)
+        else
+          expect(response.body).to include(base_text)
+          expect(response.body).not_to include(hidden_text)
+        end
+      end
+    end
+  end
+
   describe '#upload_assignments' do
     it_behaves_like 'a controller supporting upload', route_name: :upload_assignments do
       let(:params) { { id: course.id } }