diff --git a/app/assets/javascripts/notifications/constants.js b/app/assets/javascripts/notifications/constants.js
index c2aeee2751a06e6580fb5f6a7d89d944df7c867c..7af26699bd12b0a8c14285af65ed8b6a2eeb3fb9 100644
--- a/app/assets/javascripts/notifications/constants.js
+++ b/app/assets/javascripts/notifications/constants.js
@@ -42,7 +42,7 @@ export const i18n = {
     close_merge_request: s__('NotificationEvent|Merge request is closed'),
     failed_pipeline: s__('NotificationEvent|Pipeline fails'),
     fixed_pipeline: s__('NotificationEvent|Pipeline is fixed'),
-    issue_due: s__('NotificationEvent|Issue is due soon'),
+    issue_due: s__('NotificationEvent|Issue is due tomorrow'),
     merge_merge_request: s__('NotificationEvent|Merge request is merged'),
     moved_project: s__('NotificationEvent|Project is moved'),
     new_epic: s__('NotificationEvent|Epic is created'),
diff --git a/doc/user/profile/notifications.md b/doc/user/profile/notifications.md
index 718952d8d530688572e0dd51348818bc6212808a..17059b0e3f9a860739aad79f3b873d507a079db9 100644
--- a/doc/user/profile/notifications.md
+++ b/doc/user/profile/notifications.md
@@ -261,7 +261,8 @@ epics:
 | Epic | New note | Participants, Watchers, Subscribers, and Custom notification level with this event selected. Also anyone mentioned by username in the comment, with notification level "Mention" or higher. |
 | Epic | Reopened | Subscribers and participants. |
 | Issue | Closed | Subscribers and participants. |
-| Issue | Due | Participants and Custom notification level with this event selected. |
+<!-- For issue due timing source, see 'issue_due_scheduler_worker' in https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/initializers/1_settings.rb -->
+| Issue | Due tomorrow. The notification is sent at 00:50 in the server's time zone (for GitLab.com this is UTC) for open issues with a due date of the next calendar day. | Participants and Custom notification level with this event selected. |
 | Issue | Milestone changed | Subscribers and participants. |
 | Issue | Milestone removed | Subscribers and participants. |
 | Issue | New | Anyone mentioned by username in the description, with notification level "Mention" or higher. |
diff --git a/doc/user/project/issues/due_dates.md b/doc/user/project/issues/due_dates.md
index f0175b38bd6aba7fbf3d4643cc12e348a621c280..46ba6447b7ed500621b7ffed049dcabf9e8c7c1d 100644
--- a/doc/user/project/issues/due_dates.md
+++ b/doc/user/project/issues/due_dates.md
@@ -30,8 +30,9 @@ Due dates are supported in:
 - [Incidents](../../../operations/incident_management/incidents.md)
 
 The day before an open item is due, an email is sent to all participants.
-Like the due date, the "day before the due date" is determined by the
-server's time zone.
+<!-- For issue due timing source, see 'issue_due_scheduler_worker' in https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/initializers/1_settings.rb -->
+The notification is sent at 00:50 in the server's time zone (for GitLab.com this is UTC)
+for all open items with a due date of the next calendar day.
 
 Due dates also appear in your [to-do items](../../todos.md).
 
diff --git a/locale/gitlab.pot b/locale/gitlab.pot
index 01b2a1d229f60ff692070bc1aa31f8bb63347aae..0afad62a7b8d68e6c9ee87782f60a90f259aded2 100644
--- a/locale/gitlab.pot
+++ b/locale/gitlab.pot
@@ -40138,7 +40138,7 @@ msgstr ""
 msgid "NotificationEvent|Issue is created"
 msgstr ""
 
-msgid "NotificationEvent|Issue is due soon"
+msgid "NotificationEvent|Issue is due tomorrow"
 msgstr ""
 
 msgid "NotificationEvent|Issue is reassigned"