diff --git a/backend/src/services/schedule.js b/backend/src/services/schedule.js
index 415b798..a7699b6 100644
--- a/backend/src/services/schedule.js
+++ b/backend/src/services/schedule.js
@@ -383,8 +383,33 @@ export async function getMonthlySchedules(db, year, month) {
     }
   }
 
-  // 날짜순 정렬
-  schedules.sort((a, b) => a.date.localeCompare(b.date));
+  // 날짜순 정렬 (같은 날짜 내에서 특수 일정을 먼저 배치)
+  schedules.sort((a, b) => {
+    // 날짜 비교
+    const dateCompare = a.date.localeCompare(b.date);
+    if (dateCompare !== 0) return dateCompare;
+
+    // 같은 날짜면 특수 일정(생일, 기념일)을 먼저
+    const aSpecial = a.is_birthday || a.is_debut || a.is_anniversary;
+    const bSpecial = b.is_birthday || b.is_debut || b.is_anniversary;
+    if (aSpecial && !bSpecial) return -1;
+    if (!aSpecial && bSpecial) return 1;
+
+    // 둘 다 특수 일정이면 기념일 > 생일 순서
+    if (aSpecial && bSpecial) {
+      const aDebut = a.is_debut || a.is_anniversary;
+      const bDebut = b.is_debut || b.is_anniversary;
+      if (aDebut && !bDebut) return -1;
+      if (!aDebut && bDebut) return 1;
+    }
+
+    // 시간순 정렬
+    if (a.time && b.time) return a.time.localeCompare(b.time);
+    if (a.time) return -1;
+    if (b.time) return 1;
+
+    return 0;
+  });
 
   return { schedules };
 }
diff --git a/frontend/src/pages/mobile/schedule/Schedule.jsx b/frontend/src/pages/mobile/schedule/Schedule.jsx
index b8b7695..69c0432 100644
--- a/frontend/src/pages/mobile/schedule/Schedule.jsx
+++ b/frontend/src/pages/mobile/schedule/Schedule.jsx
@@ -336,19 +336,8 @@ function MobileSchedule() {
     const month = String(selectedDate.getMonth() + 1).padStart(2, '0');
     const day = String(selectedDate.getDate()).padStart(2, '0');
     const dateStr = `${year}-${month}-${day}`;
-    return schedules
-      .filter((s) => s.date.split('T')[0] === dateStr)
-      .sort((a, b) => {
-        const aIsBirthday = a.is_birthday || String(a.id).startsWith('birthday-');
-        const bIsBirthday = b.is_birthday || String(b.id).startsWith('birthday-');
-        const aIsDebut = a.is_debut || a.is_anniversary;
-        const bIsDebut = b.is_debut || b.is_anniversary;
-        const aIsSpecial = aIsBirthday || aIsDebut;
-        const bIsSpecial = bIsBirthday || bIsDebut;
-        if (aIsSpecial && !bIsSpecial) return -1;
-        if (!aIsSpecial && bIsSpecial) return 1;
-        return 0;
-      });
+    // 백엔드에서 이미 정렬된 상태로 전달됨 (특수 일정 우선)
+    return schedules.filter((s) => s.date.split('T')[0] === dateStr);
   }, [schedules, selectedDate]);
 
   // 요일 이름
diff --git a/frontend/src/pages/pc/public/schedule/Schedule.jsx b/frontend/src/pages/pc/public/schedule/Schedule.jsx
index 72859bc..ab0276e 100644
--- a/frontend/src/pages/pc/public/schedule/Schedule.jsx
+++ b/frontend/src/pages/pc/public/schedule/Schedule.jsx
@@ -238,45 +238,18 @@ function PCSchedule() {
   const currentYearMonth = `${year}-${String(month + 1).padStart(2, '0')}`;
 
   const filteredSchedules = useMemo(() => {
-    const sortWithSpecialFirst = (list) => {
-      return [...list].sort((a, b) => {
-        const aIsBirthday = a.is_birthday || String(a.id).startsWith('birthday-');
-        const bIsBirthday = b.is_birthday || String(b.id).startsWith('birthday-');
-        const aIsDebut = a.is_debut || a.is_anniversary;
-        const bIsDebut = b.is_debut || b.is_anniversary;
-        const aIsSpecial = aIsBirthday || aIsDebut;
-        const bIsSpecial = bIsBirthday || bIsDebut;
-        if (aIsSpecial && !bIsSpecial) return -1;
-        if (!aIsSpecial && bIsSpecial) return 1;
-        return 0;
-      });
-    };
-
+    // 백엔드에서 이미 정렬된 상태로 전달됨 (특수 일정 우선)
     if (isSearchMode) {
       if (!searchTerm) return [];
-      if (selectedCategories.length === 0) return sortWithSpecialFirst(searchResults);
-      return sortWithSpecialFirst(searchResults.filter((s) => selectedCategories.includes(s.category_id)));
+      if (selectedCategories.length === 0) return searchResults;
+      return searchResults.filter((s) => selectedCategories.includes(s.category_id));
     }
 
-    const filtered = schedules
-      .filter((s) => {
-        const matchesDate = selectedDate ? s.date === selectedDate : s.date?.startsWith(currentYearMonth);
-        const matchesCategory = selectedCategories.length === 0 || selectedCategories.includes(s.category_id);
-        return matchesDate && matchesCategory;
-      })
-      .sort((a, b) => {
-        const aIsBirthday = a.is_birthday || String(a.id).startsWith('birthday-');
-        const bIsBirthday = b.is_birthday || String(b.id).startsWith('birthday-');
-        const aIsDebut = a.is_debut || a.is_anniversary;
-        const bIsDebut = b.is_debut || b.is_anniversary;
-        const aIsSpecial = aIsBirthday || aIsDebut;
-        const bIsSpecial = bIsBirthday || bIsDebut;
-        if (aIsSpecial && !bIsSpecial) return -1;
-        if (!aIsSpecial && bIsSpecial) return 1;
-        if (a.date !== b.date) return a.date.localeCompare(b.date);
-        return (a.time || '00:00:00').localeCompare(b.time || '00:00:00');
-      });
-    return filtered;
+    return schedules.filter((s) => {
+      const matchesDate = selectedDate ? s.date === selectedDate : s.date?.startsWith(currentYearMonth);
+      const matchesCategory = selectedCategories.length === 0 || selectedCategories.includes(s.category_id);
+      return matchesDate && matchesCategory;
+    });
   }, [schedules, selectedDate, currentYearMonth, selectedCategories, isSearchMode, searchTerm, searchResults]);
 
   // 가상 스크롤