diff --git a/src/schedules/EventWatchSchedule.ts b/src/schedules/EventWatchSchedule.ts
index c010942..1eeafef 100644
--- a/src/schedules/EventWatchSchedule.ts
+++ b/src/schedules/EventWatchSchedule.ts
@@ -7,6 +7,11 @@ import { sendNotification } from '../utils/firebase-admin';
 import { prisma } from '../prisma/db';
 import type { Schedule } from './schedule';
 import dayjs from 'dayjs';
+import utc from "dayjs/plugin/utc";
+import timezone from "dayjs/plugin/timezone";
+
+dayjs.extend(utc);
+dayjs.extend(timezone);
 
 export class EventWatchSchedule implements Schedule {
 
@@ -15,7 +20,7 @@ export class EventWatchSchedule implements Schedule {
   constructor() {}
 
   async watchEvents() {
-    console.debug('nextStartTime: %s', dayjs(this.#job?.nextInvocation()).format('YYYY-MM-DD HH:mm:ss'));
+    console.debug('nextStartTime: %s', dayjs.tz(this.#job?.nextInvocation(), 'Asia/Tokyo').format('YYYY-MM-DD HH:mm:ss'));
     const events = await EventSubscribeService.getAllEvents();
     events.forEach((e) => this.diffEvent(e));
   }
@@ -66,6 +71,6 @@ export class EventWatchSchedule implements Schedule {
       hour: new nodeSchedule.Range(7, 23),
     }, () => this.watchEvents());
     this.#job = job;
-    console.debug('Start schedule: %s, next run at %s', job.name, dayjs(job.nextInvocation()).format('YYYY-MM-DD HH:mm:ss'));
+    console.debug('Start schedule: %s, next run at %s', job.name, dayjs.tz(job.nextInvocation(), 'Asia/Tokyo').format('YYYY-MM-DD HH:mm:ss'));
   }
 }
\ No newline at end of file