diff --git a/openedx/core/djangoapps/courseware_api/views.py b/openedx/core/djangoapps/courseware_api/views.py
index bb73f0fc82..40ea30ac22 100644
--- a/openedx/core/djangoapps/courseware_api/views.py
+++ b/openedx/core/djangoapps/courseware_api/views.py
@@ -441,6 +441,17 @@ class CoursewareInformation(RetrieveAPIView):
         context['requested_fields'] = self.request.GET.get('requested_fields', None)
         return context
 
+    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.
+        """
+        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
+
 
 class SequenceMetadata(DeveloperErrorViewMixin, APIView):
     """