diff --git a/backend/src/app.js b/backend/src/app.js
index 9479267..ed97774 100644
--- a/backend/src/app.js
+++ b/backend/src/app.js
@@ -9,6 +9,7 @@ import multipart from '@fastify/multipart';
 import rateLimit from '@fastify/rate-limit';
 import config from './config/index.js';
 import * as schemas from './schemas/index.js';
+import { nowKST } from './utils/date.js';
 
 // 플러그인
 import dbPlugin from './plugins/db.js';
@@ -116,7 +117,7 @@ export async function buildApp(opts = {}) {
 
   // 헬스 체크 엔드포인트
   fastify.get('/api/health', async () => {
-    return { status: 'ok', timestamp: new Date().toISOString() };
+    return { status: 'ok', timestamp: nowKST() };
   });
 
   // 봇 상태 조회 엔드포인트
diff --git a/backend/src/plugins/scheduler.js b/backend/src/plugins/scheduler.js
index 0e2a1be..f7ed742 100644
--- a/backend/src/plugins/scheduler.js
+++ b/backend/src/plugins/scheduler.js
@@ -2,6 +2,7 @@ import fp from 'fastify-plugin';
 import cron from 'node-cron';
 import bots from '../config/bots.js';
 import { syncWithRetry, getVersion } from '../services/meilisearch/index.js';
+import { nowKST } from '../utils/date.js';
 
 const REDIS_PREFIX = 'bot:status:';
 const TIMEZONE = 'Asia/Seoul';
@@ -14,7 +15,7 @@ async function schedulerPlugin(fastify, opts) {
    */
   async function updateStatus(botId, status) {
     const current = await getStatus(botId);
-    const updated = { ...current, ...status, updatedAt: new Date().toISOString() };
+    const updated = { ...current, ...status, updatedAt: nowKST() };
     await fastify.redis.set(`${REDIS_PREFIX}${botId}`, JSON.stringify(updated));
     return updated;
   }
@@ -32,6 +33,7 @@ async function schedulerPlugin(fastify, opts) {
       lastCheckAt: null,
       lastAddedCount: 0,
       totalAdded: 0,
+      lastSyncDuration: null,
       errorMessage: null,
     };
   }
@@ -99,7 +101,7 @@ async function schedulerPlugin(fastify, opts) {
             fastify.log.info(`[${botId}] 버전 변경 없음, 체크 종료`);
             await updateStatus(botId, {
               status: 'running',
-              lastCheckAt: new Date().toISOString(),
+              lastCheckAt: nowKST(),
             });
           }
           return;
@@ -136,20 +138,25 @@ async function schedulerPlugin(fastify, opts) {
    * 동기화 실행 및 상태 업데이트
    */
   async function performSync(botId, newVersion, versionKey) {
+    const startTime = Date.now();
     try {
       const count = await syncWithRetry(fastify.meilisearch, fastify.db);
+      const duration = Date.now() - startTime;
       await fastify.redis.set(versionKey, newVersion);
       await updateStatus(botId, {
         status: 'running',
-        lastCheckAt: new Date().toISOString(),
+        lastCheckAt: nowKST(),
         lastAddedCount: count,
+        lastSyncDuration: duration,
         errorMessage: null,
       });
-      fastify.log.info(`[${botId}] 동기화 완료: ${count}개, 새 버전: ${newVersion}`);
+      fastify.log.info(`[${botId}] 동기화 완료: ${count}개, ${duration}ms, 새 버전: ${newVersion}`);
     } catch (err) {
+      const duration = Date.now() - startTime;
       await updateStatus(botId, {
         status: 'error',
-        lastCheckAt: new Date().toISOString(),
+        lastCheckAt: nowKST(),
+        lastSyncDuration: duration,
         errorMessage: err.message,
       });
       fastify.log.error(`[${botId}] 동기화 오류: ${err.message}`);
@@ -163,7 +170,7 @@ async function schedulerPlugin(fastify, opts) {
     const { setRunningStatus = false, setErrorOnFail = false } = options;
     const status = await getStatus(botId);
     const updateData = {
-      lastCheckAt: new Date().toISOString(),
+      lastCheckAt: nowKST(),
       totalAdded: (status.totalAdded || 0) + result.addedCount,
     };
     if (setRunningStatus) {
@@ -213,7 +220,7 @@ async function schedulerPlugin(fastify, opts) {
       } catch (err) {
         await updateStatus(botId, {
           status: 'error',
-          lastCheckAt: new Date().toISOString(),
+          lastCheckAt: nowKST(),
           errorMessage: err.message,
         });
         fastify.log.error(`[${botId}] 동기화 오류: ${err.message}`);
diff --git a/backend/src/routes/admin/bots.js b/backend/src/routes/admin/bots.js
index 5bd1e2c..bc87438 100644
--- a/backend/src/routes/admin/bots.js
+++ b/backend/src/routes/admin/bots.js
@@ -2,6 +2,7 @@ import bots from '../../config/bots.js';
 import { errorResponse } from '../../schemas/index.js';
 import { syncAllSchedules } from '../../services/meilisearch/index.js';
 import { badRequest, notFound, serverError } from '../../utils/error.js';
+import { nowKST } from '../../utils/date.js';
 
 // 봇 관련 스키마
 const botResponse = {
@@ -13,6 +14,7 @@ const botResponse = {
     status: { type: 'string', enum: ['running', 'stopped', 'error'] },
     last_check_at: { type: 'string', format: 'date-time' },
     last_added_count: { type: 'integer' },
+    last_sync_duration: { type: 'integer', description: '마지막 동기화 소요 시간 (ms)' },
     schedules_added: { type: 'integer' },
     check_interval: { type: 'integer' },
     error_message: { type: 'string' },
@@ -74,6 +76,7 @@ export default async function botsRoutes(fastify) {
         status: status.status,
         last_check_at: status.lastCheckAt,
         last_added_count: status.lastAddedCount,
+        last_sync_duration: status.lastSyncDuration,
         schedules_added: status.totalAdded,
         check_interval: checkInterval,
         error_message: status.errorMessage,
@@ -194,6 +197,7 @@ export default async function botsRoutes(fastify) {
       return notFound(reply, '봇을 찾을 수 없습니다.');
     }
 
+    const startTime = Date.now();
     try {
       let result;
       if (bot.type === 'youtube') {
@@ -207,14 +211,17 @@ export default async function botsRoutes(fastify) {
         return badRequest(reply, '지원하지 않는 봇 타입입니다.');
       }
 
+      const duration = Date.now() - startTime;
+
       // 상태 업데이트
       const status = await scheduler.getStatus(id);
       await fastify.redis.set(`bot:status:${id}`, JSON.stringify({
         ...status,
-        lastCheckAt: new Date().toISOString(),
+        lastCheckAt: nowKST(),
         lastAddedCount: result.addedCount,
+        lastSyncDuration: duration,
         totalAdded: (status.totalAdded || 0) + result.addedCount,
-        updatedAt: new Date().toISOString(),
+        updatedAt: nowKST(),
       }));
 
       return {
diff --git a/backend/src/services/x/index.js b/backend/src/services/x/index.js
index 7a786fa..cbc6cbe 100644
--- a/backend/src/services/x/index.js
+++ b/backend/src/services/x/index.js
@@ -1,7 +1,7 @@
 import fp from 'fastify-plugin';
 import { fetchTweets, fetchAllTweets, extractTitle, extractYoutubeVideoIds, extractProfile } from './scraper.js';
 import { fetchVideoInfo } from '../youtube/api.js';
-import { formatDate, formatTime } from '../../utils/date.js';
+import { formatDate, formatTime, nowKST } from '../../utils/date.js';
 import bots from '../../config/bots.js';
 import { withTransaction } from '../../utils/transaction.js';
 
@@ -41,7 +41,7 @@ async function xBotPlugin(fastify, opts) {
       username,
       displayName: profile.displayName,
       avatarUrl: profile.avatarUrl,
-      updatedAt: new Date().toISOString(),
+      updatedAt: nowKST(),
     };
     await fastify.redis.setex(
       `${PROFILE_CACHE_PREFIX}${username}`,
diff --git a/backend/src/utils/date.js b/backend/src/utils/date.js
index 6028288..da86c6e 100644
--- a/backend/src/utils/date.js
+++ b/backend/src/utils/date.js
@@ -28,6 +28,14 @@ export function formatTime(date) {
   return dayjs(date).tz(KST).format('HH:mm:ss');
 }
 
+/**
+ * 현재 KST 시간을 ISO 형식으로 반환
+ * 예: "2025-01-23T13:05:00+09:00"
+ */
+export function nowKST() {
+  return dayjs().tz(KST).format();
+}
+
 /**
  * Nitter 날짜 문자열 파싱
  * 예: "Jan 15, 2026 · 10:30 PM UTC"
diff --git a/backend/src/utils/logger.js b/backend/src/utils/logger.js
index 1e75bcd..90ba42e 100644
--- a/backend/src/utils/logger.js
+++ b/backend/src/utils/logger.js
@@ -2,6 +2,7 @@
  * 로거 유틸리티
  * 서비스 레이어에서 사용할 수 있는 간단한 로깅 유틸리티
  */
+import { nowKST } from './date.js';
 
 const PREFIX = {
   info: '[INFO]',
@@ -11,7 +12,7 @@ const PREFIX = {
 };
 
 function formatMessage(level, context, message) {
-  const timestamp = new Date().toISOString();
+  const timestamp = nowKST();
   return `${timestamp} ${PREFIX[level]} [${context}] ${message}`;
 }
 
diff --git a/frontend/src/components/pc/admin/bot/BotCard.jsx b/frontend/src/components/pc/admin/bot/BotCard.jsx
index 2cb80a2..5df1c23 100644
--- a/frontend/src/components/pc/admin/bot/BotCard.jsx
+++ b/frontend/src/components/pc/admin/bot/BotCard.jsx
@@ -144,26 +144,20 @@ const BotCard = memo(function BotCard({
       <div className="grid grid-cols-3 divide-x divide-gray-100 bg-gray-50/50">
         {bot.type === 'meilisearch' ? (
           <>
-            <div className="p-3 text-center">
-              <div className="text-lg font-bold text-gray-900">
-                {bot.last_check_at
-                  ? new Date(bot.last_check_at).toLocaleString('ko-KR', {
-                      month: 'numeric',
-                      day: 'numeric',
-                      hour: '2-digit',
-                      minute: '2-digit',
-                      hour12: false,
-                    })
-                  : '-'}
-              </div>
-              <div className="text-xs text-gray-400">마지막 동기화</div>
-            </div>
             <div className="p-3 text-center">
               <div className="text-lg font-bold text-gray-900">
                 {bot.last_added_count?.toLocaleString() || '-'}
               </div>
               <div className="text-xs text-gray-400">동기화 수</div>
             </div>
+            <div className="p-3 text-center">
+              <div className="text-lg font-bold text-gray-900">
+                {bot.last_sync_duration != null
+                  ? `${(bot.last_sync_duration / 1000).toFixed(1)}초`
+                  : '-'}
+              </div>
+              <div className="text-xs text-gray-400">소요 시간</div>
+            </div>
             <div className="p-3 text-center">
               <div className="text-lg font-bold text-gray-900">{bot.version || '-'}</div>
               <div className="text-xs text-gray-400">버전</div>