diff --git a/src/components/SideBarLeft.jsx b/src/components/SideBarLeft.jsx
index 0b1f3d1..9e01d76 100644
--- a/src/components/SideBarLeft.jsx
+++ b/src/components/SideBarLeft.jsx
@@ -17,13 +17,15 @@ import {
 export default function SideBarLeft() {
   const [isCalendarInfoOpen, setCalendarInfoOpen] = useState(false);
   const [selectedCalendar, setSelectedCalendar] = useState(null);
-  const [myCalendars, setMyCalendars] = useState([]);
-  const [subscribedCalendars, setSubscribedCalendars] = useState([]);
-  const navigate = useNavigate();
 
+  const navigate = useNavigate();
   const [checked, setChecked] = useState({});
   const [isInviteOpen, setIsInviteOpen] = useState(false);
-  const [isCreateCalendarOpen, setIsCreateCalendarOpen] = useState(false);
+  const [isCreateOpen, setIsCreateCalendarOpen] = useState(false);
+
+  const [myCalendars, setMyCalendars] = useState([]);
+  const [subscribedCalendars, setSubscribedCalendars] = useState([]);
+  const [dday, setDday] = useState([]);
 
   const { loggedIn, userInfo } = useAuth();
 
@@ -31,7 +33,7 @@ export default function SideBarLeft() {
     async function fetchData() {
       try {
         const token = localStorage.getItem("token");
-        const [myCalendarsResponse, subscribedCalendarsResponse] =
+        const [myCalendarsResponse, subscribedCalendarsResponse, ddayResponse] =
           await Promise.all([
             axios.get("/api/calendars/admins", {
               headers: { Authorization: `Bearer ${token}` },
@@ -39,6 +41,9 @@ export default function SideBarLeft() {
             axios.get(`/api/users/${userInfo.user_id}/subscriptions`, {
               headers: { Authorization: `Bearer ${token}` },
             }),
+            axios.get(`/api/users/${userInfo.user_id}/favorite-events`, {
+              headers: { Authorization: `Bearer ${token}` },
+            }),
           ]);
 
         if (myCalendarsResponse.status === 200) {
@@ -47,6 +52,9 @@ export default function SideBarLeft() {
         if (subscribedCalendarsResponse.status === 200) {
           setSubscribedCalendars(subscribedCalendarsResponse.data);
         }
+        if (ddayResponse.status === 200) {
+          setDday(ddayResponse.data.favorite_events);
+        }
       } catch (error) {
         console.error("캘린더 데이터를 가져오는 중 오류 발생:", error);
       }
@@ -55,7 +63,7 @@ export default function SideBarLeft() {
     if (userInfo?.user_id) {
       fetchData();
     }
-  }, [userInfo, isCalendarInfoOpen, isCreateCalendarOpen]);
+  }, [userInfo, isCalendarInfoOpen, isCreateOpen]);
 
   const handleToggle = (id) => {
     setChecked((prev) => ({
@@ -195,7 +203,7 @@ export default function SideBarLeft() {
           <InviteCodeModal onClose={toggleInvite} />
         </div>
       )}
-      {isCreateCalendarOpen && (
+      {isCreateOpen && (
         <div className="fixed inset-0 z-50 flex items-center justify-center bg-black bg-opacity-30">
           <CreateCalendar onClose={toggleCreateCalendar} />
         </div>
@@ -210,12 +218,33 @@ export default function SideBarLeft() {
           />
         </div>
       )}
+      <div className="fixed bottom-[3rem] left-[4rem] flex flex-col items-center justify-center">
+        <ul className="space-y-[.8rem]">
+          {dday.map((item, index) => {
+            const today = new Date();
+            const dDay = new Date(item.d_day);
+            const differenceInTime = dDay - today;
+            const differenceInDays = Math.ceil(
+              differenceInTime / (1000 * 60 * 60 * 24),
+            );
+
+            return (
+              <li key={index} className="flex">
+                <span className="w-[3rem] text-left text-[.9rem] font-bold text-eventoPurpleDark/70">
+                  {differenceInDays > 0
+                    ? `D-${differenceInDays}`
+                    : differenceInDays === 0
+                      ? "D-Day"
+                      : `D+${Math.abs(differenceInDays)}`}
+                </span>
+                <span className="flex-1 pl-2 text-left text-[0.9rem] text-darkGray/90">
+                  {item.event_title}
+                </span>
+              </li>
+            );
+          })}
+        </ul>
+      </div>
     </div>
   );
 }
-
-const dDayItems = [
-  { day: "D-1", description: "evento 배포" },
-  { day: "D-6", description: "푸딩즈 회식!" },
-  { day: "D-69", description: "졸업 언제하냐" },
-];
diff --git a/src/mocks/handlers/eventHandlers.js b/src/mocks/handlers/eventHandlers.js
index 8c8c623..2b2e175 100644
--- a/src/mocks/handlers/eventHandlers.js
+++ b/src/mocks/handlers/eventHandlers.js
@@ -168,10 +168,44 @@ export const eventHandlers = [
     // 캘린더 삭제
     mockEventData.splice(eventIndex, 1);
 
-    // 200 OK 응답 반환
     return res(
       ctx.status(200),
       ctx.json({ message: "이벤트가 성공적으로 삭제되었습니다." }),
     );
   }),
+
+  rest.get("/api/users/:userId/favorite-events", (req, res, ctx) => {
+    const { userId } = req.params;
+    const token = req.headers.get("Authorization");
+
+    if (!token || token !== "Bearer fake_token") {
+      return res(
+        ctx.status(40),
+        ctx.json({
+          error: "인증 실패",
+          message: "로그인이 필요합니다. 다시 로그인해 주세요.",
+        }),
+      );
+    }
+
+    return res(
+      ctx.status(200),
+      ctx.json({
+        favorite_events: [
+          {
+            favorite_event_id: 1,
+            event_id: 1,
+            event_title: "프로젝트 끝!",
+            d_day: "2024-12-11",
+          },
+          {
+            favorite_event_id: 2,
+            event_id: 2,
+            event_title: "2025년",
+            d_day: "2025-01-01",
+          },
+        ],
+      }),
+    );
+  }),
 ];