diff --git a/package.json b/package.json
index 9872834..fcff831 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,7 @@
     "@prisma/client": "4.13.0",
     "bootstrap": "5.2.3",
     "cookie-parser": "1.4.6",
+    "dayjs": "1.11.7",
     "debug": "4.3.4",
     "express": "4.18.2",
     "express-session": "1.17.3",
diff --git a/routes/index.js b/routes/index.js
index 0a04dba..94debb0 100644
--- a/routes/index.js
+++ b/routes/index.js
@@ -4,6 +4,13 @@ const router = express.Router();
 const { PrismaClient } = require('@prisma/client');
 const prisma = new PrismaClient({ log: [ 'query' ] });
 
+const dayjs = require('dayjs');
+const utc = require('dayjs/plugin/utc');
+const timezone = require('dayjs/plugin/timezone');
+dayjs.extend(utc);
+dayjs.extend(timezone);
+dayjs.tz.setDefault('Asia/Tokyo');
+
 /* GET home page. */
 router.get('/', async (req, res, next) => {
   const title = '予定調整くん';
@@ -12,6 +19,9 @@ router.get('/', async (req, res, next) => {
       where: { createdBy: parseInt(req.user.id) },
       orderBy: { updatedAt: 'desc' }
     });
+    schedules.forEach((schedule) => {
+      schedule.formattedUpdatedAt = dayjs(schedule.updatedAt).tz().format('YYYY/MM/DD HH:mm');
+    });
     res.render('index', {
       title: title,
       user: req.user,
diff --git a/views/index.pug b/views/index.pug
index cd22862..d18f241 100644
--- a/views/index.pug
+++ b/views/index.pug
@@ -19,4 +19,4 @@ block content
             tr
               td
                 a(href=`/schedules/${schedule.scheduleId}`) #{schedule.scheduleName}
-              td #{schedule.updatedAt}
+              td #{schedule.formattedUpdatedAt}