diff --git a/.gitignore b/.gitignore
index a206f04..260aa50 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,8 @@
 .history
 .env
+.env.*
+!.env.example
+.vite
 .windsurfrules
 config.js
 backend/node_modules/*
diff --git a/backend/app.js b/backend/app.js
index 0593538..a947843 100644
--- a/backend/app.js
+++ b/backend/app.js
@@ -80,7 +80,7 @@ app.get('/', (req, res) => {
 // 서버 시작
 const PORT = process.env.PORT || 3030;
 server.listen(PORT, () => {
-  console.log(`서버가 포트 ${PORT}에서 실행 중입니다.`);
+  console.log(`서버가 ${process.env.NODE_ENV} 환경으로 포트 ${PORT}에서 실행 중입니다.`);
 });
 
 module.exports = app;
diff --git a/backend/config/database.js b/backend/config/database.js
index 12aa3fa..9bbc731 100644
--- a/backend/config/database.js
+++ b/backend/config/database.js
@@ -1,5 +1,14 @@
 const { Sequelize } = require('sequelize');
-require('dotenv').config();
+const path = require('path');
+
+// 환경 변수 설정
+const env = process.env.NODE_ENV || 'development';
+const envPath = path.resolve(process.cwd(), `.env.${env}`);
+
+// 환경별 .env 파일 로드
+require('dotenv').config({
+  path: envPath
+});
 
 const sequelize = new Sequelize(
   process.env.DB_NAME,
@@ -9,7 +18,7 @@ const sequelize = new Sequelize(
     host: process.env.DB_HOST,
     port: process.env.DB_PORT,
     dialect: 'mysql',
-    logging: true, // 개발 중에는 true로 설정하여 SQL 쿼리 로그 확인 가능
+    logging: process.env.NODE_ENV === 'development' ? console.log : false, // 개발 환경에서만 로깅 활성화
     pool: {
       max: 5,
       min: 0,
diff --git a/backend/controllers/eventController.js b/backend/controllers/eventController.js
index e2ae7e2..9ebd836 100644
--- a/backend/controllers/eventController.js
+++ b/backend/controllers/eventController.js
@@ -32,6 +32,7 @@ exports.getAllEvents = async (req, res) => {
           where: { 
             status: { [Op.ne]: '취소' }
           },
+          required: false,
           include: [{
             model: Member,
             attributes: ['id', 'name', 'memberType', 'gender']
@@ -83,6 +84,7 @@ exports.getEventById = async (req, res) => {
           where: { 
             status: { [Op.ne]: '취소' }
           },
+          required: false,
           include: [{
             model: Member,
             attributes: ['id', 'name']
@@ -145,7 +147,7 @@ exports.createEvent = async (req, res) => {
       clubId,
       title,
       description,
-      startDate: new Date(startDate),
+      startDate: startDate ? startDate : null,
       endDate: endDateVal,
       location,
       maxParticipants: maxParticipants || 0,
@@ -220,8 +222,8 @@ exports.updateEvent = async (req, res) => {
     const updateData = {
       title,
       description,
-      startDate: startDate ? new Date(startDate) : event.startDate,
-      endDate: endDate ? new Date(endDate) : null,
+      startDate: startDate ? startDate : event.startDate,
+      endDate: endDate || null,
       location,
       maxParticipants: maxParticipants || event.maxParticipants,
       eventType: eventType || event.eventType,
@@ -246,11 +248,16 @@ exports.updateEvent = async (req, res) => {
           attributes: ['id', 'status'],
           where: { 
             status: { [Op.ne]: '취소' }
-          }
+          },
+          required: false
         }
       ]
     });
 
+    if (!updatedEvent) {
+      return res.status(404).json({ message: '이벤트를 찾을 수 없습니다.' });
+    }
+
     res.json({
       message: '이벤트가 수정되었습니다.',
       event: {
diff --git a/backend/models/index.js b/backend/models/index.js
index a853b71..6246b82 100644
--- a/backend/models/index.js
+++ b/backend/models/index.js
@@ -1,4 +1,5 @@
 const { sequelize } = require('../config/database');
+const { Op } = require('sequelize');
 const User = require('./User');
 const Club = require('./Club');
 const Event = require('./Event');
@@ -160,7 +161,7 @@ const createSampleData = async () => {
     await Club.destroy({ where: {} });
     await Feature.destroy({ where: {} });
     await SubscriptionPlan.destroy({ where: {} });
-    await User.destroy({ where: {} });
+    await User.destroy({ where: { email: { [Op.ne]: process.env.ADMIN_EMAIL } } });
     console.log('기존 데이터가 모두 삭제되었습니다.');
 
     // 2. 샘플 사용자 데이터 생성
diff --git a/backend/package.json b/backend/package.json
index f9a589e..9773c68 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -3,7 +3,10 @@
   "version": "1.0.0",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "start": "NODE_ENV=production node app.js",
+    "cleanup": "lsof -ti:3030 | xargs kill -9 || true",
+    "dev": "npm run cleanup && NODE_ENV=development nodemon app.js",
+    "test": "NODE_ENV=test jest"
   },
   "keywords": [],
   "author": "",
diff --git a/backend/routes/adminRoutes.js b/backend/routes/adminRoutes.js
index e9aa25b..9306ef9 100644
--- a/backend/routes/adminRoutes.js
+++ b/backend/routes/adminRoutes.js
@@ -1,6 +1,7 @@
 const express = require('express');
 const router = express.Router();
 const { Club, Member, User, Feature, ClubFeature, ActivityLog, SubscriptionPlan, Meeting, MeetingParticipant, ClubSubscription } = require('../models');
+const clubController = require('../controllers/clubController');
 const { sequelize } = require('../models/index');
 const { Op } = require('sequelize');
 const { authenticateJWT, authorizeRoles } = require('../middleware/authMiddleware');
@@ -1294,6 +1295,9 @@ router.get('/clubs/:id', async (req, res) => {
     }
 });
 
+// 새 클럽 생성
+router.post('/clubs', authenticateJWT, clubController.createClub);
+
 // 클럽 수정
 router.put('/clubs/:id', async (req, res) => {
     try {
diff --git a/frontend/package.json b/frontend/package.json
index baae4d2..7516681 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -4,7 +4,8 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "dev": "vite --host 0.0.0.0 --port 5173",
+    "cleanup": "pkill -f esbuild || true",
+    "dev": "npm run cleanup && vite --host 0.0.0.0 --port 5173",
     "build": "vite build",
     "preview": "vite preview"
   },
diff --git a/frontend/src/components/event/EventDialog.vue b/frontend/src/components/event/EventDialog.vue
index dbd6dca..5af1332 100644
--- a/frontend/src/components/event/EventDialog.vue
+++ b/frontend/src/components/event/EventDialog.vue
@@ -99,6 +99,7 @@
 
 <script setup>
 import { ref, watch, toRefs, computed } from 'vue';
+import dayjs from 'dayjs';
 
 const statusOptions = [
   { name: '준비', value: '준비' },
@@ -145,9 +146,7 @@ const eventModel = ref({ ...props.event });
 // 날짜 형식 변환
 const formatDate = (date) => {
   if (!date) return null;
-  const d = new Date(date);
-  d.setHours(d.getHours() + 9); // UTC to KST
-  return d;
+  return dayjs(date).toDate();
 };
 
 // props 변경 시 이벤트 모델 업데이트
@@ -161,23 +160,17 @@ watch(() => props.event, (newValue) => {
   eventModel.value = formattedEvent;
 }, { deep: true });
 
-// 이벤트 저장 시 UTC로 변환
+// 이벤트 저장
 const saveEvent = () => {
   const eventData = { ...eventModel.value };
   if (eventData.startDate) {
-    const d = new Date(eventData.startDate);
-    d.setHours(d.getHours() - 9); // KST to UTC
-    eventData.startDate = d;
+    eventData.startDate = dayjs(eventData.startDate).toDate();
   }
   if (eventData.endDate) {
-    const d = new Date(eventData.endDate);
-    d.setHours(d.getHours() - 9); // KST to UTC
-    eventData.endDate = d;
+    eventData.endDate = dayjs(eventData.endDate).toDate();
   }
   if (eventData.registrationDeadline) {
-    const d = new Date(eventData.registrationDeadline);
-    d.setHours(d.getHours() - 9); // KST to UTC
-    eventData.registrationDeadline = d;
+    eventData.registrationDeadline = dayjs(eventData.registrationDeadline).toDate();
   }
   emit('save', eventData);
 };
diff --git a/frontend/src/components/event/ParticipantManagement.vue b/frontend/src/components/event/ParticipantManagement.vue
index 4eff8e6..c99c591 100644
--- a/frontend/src/components/event/ParticipantManagement.vue
+++ b/frontend/src/components/event/ParticipantManagement.vue
@@ -114,7 +114,7 @@
 </template>
 
 <script setup>
-import { ref, computed, onMounted, defineEmits } from 'vue';
+import { ref, computed, onMounted } from 'vue';
 import { useToast } from 'primevue/usetoast';
 import eventService from '@/services/eventService';
 import dayjs from 'dayjs';
diff --git a/frontend/src/main.js b/frontend/src/main.js
index a5640e8..baf92fd 100644
--- a/frontend/src/main.js
+++ b/frontend/src/main.js
@@ -3,6 +3,15 @@ import { createPinia } from 'pinia'
 import App from './App.vue'
 import router from './router'
 
+// dayjs configuration
+import dayjs from 'dayjs'
+import timezone from 'dayjs/plugin/timezone'
+import utc from 'dayjs/plugin/utc'
+
+dayjs.extend(utc)
+dayjs.extend(timezone)
+dayjs.tz.setDefault('Asia/Seoul')
+
 // PrimeVue
 import PrimeVue from 'primevue/config'
 import 'primevue/resources/themes/lara-light-blue/theme.css'
diff --git a/frontend/src/services/adminService.js b/frontend/src/services/adminService.js
index 38f9210..0db2c2d 100644
--- a/frontend/src/services/adminService.js
+++ b/frontend/src/services/adminService.js
@@ -29,6 +29,15 @@ const adminService = {
     return apiClient.get(`/api/admin/clubs/${id}`);
   },
 
+  /**
+   * 새 클럽 생성
+   * @param {Object} clubData - 클럽 정보
+   * @returns {Promise} - 생성된 클럽 정보
+   */
+  createClub(clubData) {
+    return apiClient.post('/api/admin/clubs', clubData);
+  },
+
   /**
    * 클럽 정보 업데이트
    * @param {Number} id - 클럽 ID
diff --git a/frontend/src/services/eventService.js b/frontend/src/services/eventService.js
index 2d13bb2..dabae8e 100644
--- a/frontend/src/services/eventService.js
+++ b/frontend/src/services/eventService.js
@@ -60,8 +60,8 @@ export default {
     try {
       const formattedEvent = {
         ...event,
-        startDate: dayjs(event.startDate).format('YYYY-MM-DD'),
-        endDate: event.endDate ? dayjs(event.endDate).format('YYYY-MM-DD') : null
+        startDate: dayjs(event.startDate).format('YYYY-MM-DDTHH:mm:ssZ'),
+        endDate: event.endDate ? dayjs(event.endDate).format('YYYY-MM-DDTHH:mm:ssZ') : null
       };
       
       const response = await apiClient.post('/api/club/events/create', formattedEvent);
@@ -87,8 +87,8 @@ export default {
     try {
       const formattedEvent = {
         ...event,
-        startDate: dayjs(event.startDate).format('YYYY-MM-DD'),
-        endDate: dayjs(event.endDate).format('YYYY-MM-DD')
+        startDate: dayjs(event.startDate).format('YYYY-MM-DDTHH:mm:ssZ'),
+        endDate: event.endDate ? dayjs(event.endDate).format('YYYY-MM-DDTHH:mm:ssZ') : null
       };
       
       const response = await apiClient.put(`/api/club/events/${event.id}`, formattedEvent);
diff --git a/frontend/src/views/club/EventManagement.vue b/frontend/src/views/club/EventManagement.vue
index 6eb0615..6f06211 100644
--- a/frontend/src/views/club/EventManagement.vue
+++ b/frontend/src/views/club/EventManagement.vue
@@ -114,6 +114,7 @@ import { useToast } from 'primevue/usetoast';
 import { useRoute } from 'vue-router';
 import { useClubStore } from '@/stores/clubStore';
 import eventService from '@/services/eventService';
+import dayjs from 'dayjs';
 import clubService from '@/services/clubService';
 import ScoreManagement from '@/components/event/ScoreManagement.vue';
 import ParticipantManagement from '@/components/event/ParticipantManagement.vue';
@@ -214,14 +215,7 @@ onMounted(async () => {
 // 날짜 포맷 함수
 const formatDate = (date) => {
   if (!date) return '';
-  const d = new Date(date);
-  return d.toLocaleString('ko-KR', {
-    year: 'numeric',
-    month: '2-digit',
-    day: '2-digit',
-    hour: '2-digit',
-    minute: '2-digit'
-  });
+  return dayjs(date).format('YYYY. MM. DD. HH:mm');
 };
 
 // 이벤트 유형에 따른 Badge 스타일
@@ -336,18 +330,14 @@ const saveEvent = async (eventData) => {
         ...eventData,
         clubId: clubId.value
       });
-      const updatedEvent = response;
-      const index = events.value.findIndex(e => e.id === updatedEvent.id);
-      if (index !== -1) {
-        events.value[index] = updatedEvent;
-      }
+      await fetchEvents(); // 목록 갱신
     } else {
       // 이벤트 생성
       const response = await eventService.createEvent({
         ...eventData,
         clubId: clubId.value
       });
-      events.value.push(response);
+      await fetchEvents(); // 목록 갱신
     }
     toast.add({
       severity: 'success',
diff --git a/frontend/vite.config.js b/frontend/vite.config.js
index 798a380..8b1aa6e 100644
--- a/frontend/vite.config.js
+++ b/frontend/vite.config.js
@@ -13,7 +13,7 @@ export default defineConfig({
   server: {
     host: '0.0.0.0',
     port: 5173,
-    //strictPort: true,
+    strictPort: true,
     proxy: {
       '/api': {
         target: 'http://localhost:3030',