diff --git a/common/djangoapps/util/views.py b/common/djangoapps/util/views.py
index 73a164561c..3204c9805d 100644
--- a/common/djangoapps/util/views.py
+++ b/common/djangoapps/util/views.py
@@ -213,3 +213,13 @@ def reset_course_deadlines(request):
 
     referrer = request.META.get('HTTP_REFERER')
     return redirect(referrer) if referrer else HttpResponse()
+
+
+def expose_header(header, response):
+    """
+    Add a header name to Access-Control-Expose-Headers to allow client code to access that header's value
+    """
+    exposedHeaders = response.get('Access-Control-Expose-Headers', '')
+    exposedHeaders += f', {header}' if exposedHeaders else header
+    response['Access-Control-Expose-Headers'] = exposedHeaders
+    return response
diff --git a/lms/djangoapps/course_home_api/outline/v1/views.py b/lms/djangoapps/course_home_api/outline/v1/views.py
index 5869d33234..7bbb48530e 100644
--- a/lms/djangoapps/course_home_api/outline/v1/views.py
+++ b/lms/djangoapps/course_home_api/outline/v1/views.py
@@ -19,6 +19,7 @@ from rest_framework.response import Response
 
 from common.djangoapps.course_modes.models import CourseMode
 from common.djangoapps.student.models import CourseEnrollment
+from common.djangoapps.util.views import expose_header
 from lms.djangoapps.course_goals.api import (
     add_course_goal,
     get_course_goal,
@@ -295,6 +296,20 @@ class OutlineTabView(RetrieveAPIView):
 
         return Response(serializer.data)
 
+    def finalize_response(self, request, response, *args, **kwargs):
+        """
+        Return the final response, exposing the 'Date' header for computing relative time to the dates in the data.
+
+        Important dates such as 'access_expiration' are enforced server-side based on correct time; client-side clocks
+        are frequently substantially far off which could lead to inaccurate messaging and incorrect expectations.
+        Therefore, any messaging about those dates should be based on the server time and preferably in relative terms
+        (time remaining); the 'Date' header is a straightforward and generalizable way for client-side code to get this
+        reference.
+        """
+        response = super().finalize_response(request, response, *args, **kwargs)
+        # Adding this header should be moved to global middleware, not just this endpoint
+        return expose_header('Date', response)
+
 
 @api_view(['POST'])
 @authentication_classes((JwtAuthentication,))
diff --git a/openedx/core/djangoapps/courseware_api/views.py b/openedx/core/djangoapps/courseware_api/views.py
index 5db49a5c72..9d946cd6ac 100644
--- a/openedx/core/djangoapps/courseware_api/views.py
+++ b/openedx/core/djangoapps/courseware_api/views.py
@@ -19,6 +19,7 @@ from rest_framework.response import Response
 from rest_framework.views import APIView
 
 from common.djangoapps.course_modes.models import CourseMode
+from common.djangoapps.util.views import expose_header
 from lms.djangoapps.edxnotes.helpers import is_feature_enabled
 from lms.djangoapps.certificates.api import get_certificate_url
 from lms.djangoapps.certificates.models import GeneratedCertificate
@@ -444,13 +445,16 @@ class CoursewareInformation(RetrieveAPIView):
     def finalize_response(self, request, response, *args, **kwargs):
         """
         Return the final response, exposing the 'Date' header for computing relative time to the dates in the data.
+
+        Important dates such as 'access_expiration' are enforced server-side based on correct time; client-side clocks
+        are frequently substantially far off which could lead to inaccurate messaging and incorrect expectations.
+        Therefore, any messaging about those dates should be based on the server time and preferably in relative terms
+        (time remaining); the 'Date' header is a straightforward and generalizable way for client-side code to get this
+        reference.
         """
         response = super().finalize_response(request, response, *args, **kwargs)
-        # Adding this header should be moved somewhere global, not just this endpoint
-        exposedHeaders = response.get('Access-Control-Expose-Headers', '')
-        exposedHeaders += ', Date' if exposedHeaders else 'Date'
-        response['Access-Control-Expose-Headers'] = exposedHeaders
-        return response
+        # Adding this header should be moved to global middleware, not just this endpoint
+        return expose_header('Date', response)
 
 
 class SequenceMetadata(DeveloperErrorViewMixin, APIView):