diff --git a/src/main/java/com/slatto/domain/notification/controller/TodayBriefingController.java b/src/main/java/com/slatto/domain/notification/controller/TodayBriefingController.java
index f3787fea..d2607013 100644
--- a/src/main/java/com/slatto/domain/notification/controller/TodayBriefingController.java
+++ b/src/main/java/com/slatto/domain/notification/controller/TodayBriefingController.java
@@ -22,7 +22,7 @@ public class TodayBriefingController {
 
     @Operation(
         summary = "오늘의 브리핑 조회",
-        description = "홈 화면에 표시할 오늘의 브리핑을 최대 3건까지 조회합니다. 브리핑은 일정과 최근 주요 알림 데이터를 조합해 반환합니다."
+        description = "홈 화면에 표시할 오늘의 브리핑을 최대 3건까지 조회합니다. 오늘 일정, 여러 날 일정의 마감 당일, 일정 시작 D-1/D-3 알림과 최근 24시간 주요 알림을 정책 우선순위 기준으로 조합해 반환합니다."
     )
     @GetMapping("/today")
     public ApiResponse<TodayBriefingResponse> getTodayBriefings(
diff --git a/src/main/java/com/slatto/domain/notification/enums/TodayBriefingType.java b/src/main/java/com/slatto/domain/notification/enums/TodayBriefingType.java
index c5a20b42..2902a108 100644
--- a/src/main/java/com/slatto/domain/notification/enums/TodayBriefingType.java
+++ b/src/main/java/com/slatto/domain/notification/enums/TodayBriefingType.java
@@ -8,12 +8,13 @@
 public enum TodayBriefingType {
 
     TODAY_SCHEDULE(1),
-    SCHEDULE_START_REMINDER(2),
-    RECRUITMENT_APPLIED(3),
-    SCHEDULE_CREATED(4),
-    NOTICE_CREATED(5),
-    FILE_UPLOADED(6),
-    VIDEO_FEEDBACK_COMMENTED(7);
+    SCHEDULE_DUE_TODAY(2),
+    SCHEDULE_START_REMINDER(3),
+    RECRUITMENT_APPLIED(4),
+    SCHEDULE_CREATED(5),
+    NOTICE_CREATED(6),
+    FILE_UPLOADED(7),
+    VIDEO_FEEDBACK_COMMENTED(8);
 
     private final int priority;
 }
diff --git a/src/main/java/com/slatto/domain/notification/repository/NotificationRepository.java b/src/main/java/com/slatto/domain/notification/repository/NotificationRepository.java
index 5bbe6304..f49b96c8 100644
--- a/src/main/java/com/slatto/domain/notification/repository/NotificationRepository.java
+++ b/src/main/java/com/slatto/domain/notification/repository/NotificationRepository.java
@@ -60,11 +60,11 @@ List<Notification> findRecentNotificationsByCursor(
             and n.type in :types
         order by
             case
-                when n.type = :recruitmentAppliedType then 3
-                when n.type = :scheduleCreatedType then 4
-                when n.type = :noticeCreatedType then 5
-                when n.type = :fileUploadedType then 6
-                when n.type = :videoFeedbackCommentedType then 7
+                when n.type = :recruitmentAppliedType then 4
+                when n.type = :scheduleCreatedType then 5
+                when n.type = :noticeCreatedType then 6
+                when n.type = :fileUploadedType then 7
+                when n.type = :videoFeedbackCommentedType then 8
                 else 999
             end,
             n.updatedAt desc,
diff --git a/src/main/java/com/slatto/domain/notification/service/TodayBriefingService.java b/src/main/java/com/slatto/domain/notification/service/TodayBriefingService.java
index 41f04371..62602f5f 100644
--- a/src/main/java/com/slatto/domain/notification/service/TodayBriefingService.java
+++ b/src/main/java/com/slatto/domain/notification/service/TodayBriefingService.java
@@ -76,7 +76,7 @@ private void addTodayScheduleBriefings(
 
         schedules.forEach(schedule -> {
             candidates.add(BriefingCandidate.builder()
-                .type(TodayBriefingType.TODAY_SCHEDULE)
+                .type(getTodayScheduleBriefingType(schedule, today))
                 .content(buildTodayScheduleContent(schedule, today))
                 .projectId(getProjectId(schedule.getProject()))
                 .targetType(NotificationTargetType.SCHEDULE.name())
@@ -176,7 +176,7 @@ private BriefingCandidate toNotificationCandidate(Notification notification) {
     private String buildTodayScheduleContent(Schedule schedule, LocalDate today) {
         String title = schedule.getTitle();
         String projectTitle = getProjectTitle(schedule.getProject());
-        String actionText = isMultiDaySchedule(schedule) && isScheduleEndDate(schedule, today)
+        String actionText = isScheduleDueToday(schedule, today)
             ? "마감이에요"
             : "일정이 있어요";
 
@@ -186,6 +186,17 @@ private String buildTodayScheduleContent(Schedule schedule, LocalDate today) {
         return "[" + projectTitle + "] 오늘 [" + title + "] " + actionText;
     }
 
+    private TodayBriefingType getTodayScheduleBriefingType(Schedule schedule, LocalDate today) {
+        if (isScheduleDueToday(schedule, today)) {
+            return TodayBriefingType.SCHEDULE_DUE_TODAY;
+        }
+        return TodayBriefingType.TODAY_SCHEDULE;
+    }
+
+    private boolean isScheduleDueToday(Schedule schedule, LocalDate today) {
+        return isMultiDaySchedule(schedule) && isScheduleEndDate(schedule, today);
+    }
+
     private String buildStartReminderContent(Schedule schedule, int dayOffset) {
         String title = schedule.getTitle();
         String projectTitle = getProjectTitle(schedule.getProject());
@@ -198,11 +209,16 @@ private String buildStartReminderContent(Schedule schedule, int dayOffset) {
     }
 
     private boolean isScheduleEndDate(Schedule schedule, LocalDate date) {
-        return schedule.getEndAt().toLocalDate().isEqual(date);
+        return getInclusiveEndDate(schedule).isEqual(date);
     }
 
     private boolean isMultiDaySchedule(Schedule schedule) {
-        return !schedule.getStartAt().toLocalDate().isEqual(schedule.getEndAt().toLocalDate());
+        return !schedule.getStartAt().toLocalDate().isEqual(getInclusiveEndDate(schedule));
+    }
+
+    private LocalDate getInclusiveEndDate(Schedule schedule) {
+        // endAt은 종료 경계값이므로 00:00 종료 일정은 전날까지 진행된 일정으로 본다.
+        return schedule.getEndAt().minusNanos(1).toLocalDate();
     }
 
     private Long getProjectId(Project project) {