diff --git a/apps/server/src/agent-context/pending-tasks.service.ts b/apps/server/src/agent-context/pending-tasks.service.ts
index c8f34de..9593a50 100644
--- a/apps/server/src/agent-context/pending-tasks.service.ts
+++ b/apps/server/src/agent-context/pending-tasks.service.ts
@@ -56,11 +56,11 @@ function teacherScopedCountSql(sql: (scope: StudentAccessScope) => string): SqlB
 }
 
 function today(): string {
-  return dayjs().format('YYYY-MM-DD');
+  return dayjs().utcOffset(8).format('YYYY-MM-DD');
 }
 
 function inDays(days: number): string {
-  return dayjs().add(days, 'day').format('YYYY-MM-DD');
+  return dayjs().utcOffset(8).add(days, 'day').format('YYYY-MM-DD');
 }
 
 const TASKS: readonly TaskDefinition[] = [
diff --git a/apps/server/src/ai-chat/ai-review.import-relations.ts b/apps/server/src/ai-chat/ai-review.import-relations.ts
index ea6c334..de66653 100644
--- a/apps/server/src/ai-chat/ai-review.import-relations.ts
+++ b/apps/server/src/ai-chat/ai-review.import-relations.ts
@@ -250,7 +250,7 @@ async function importCheckins(
       continue;
     }
 
-    const checkInDate = toDateString(row.checkInDate) ?? dayjs().utc().format('YYYY-MM-DD');
+    const checkInDate = toDateString(row.checkInDate) ?? dayjs().utcOffset(8).format('YYYY-MM-DD');
     const billingStartDate = toDateString(row.billingStartDate) ?? checkInDate;
     const checkOutDate = toDateString(row.checkOutDate);
     const isHistoricalRecord = Boolean(checkOutDate);
diff --git a/apps/server/src/attendance/attendance.controller-base.ts b/apps/server/src/attendance/attendance.controller-base.ts
index ea77673..8eb0233 100644
--- a/apps/server/src/attendance/attendance.controller-base.ts
+++ b/apps/server/src/attendance/attendance.controller-base.ts
@@ -33,7 +33,7 @@ export abstract class AttendanceControllerBase {
   ) {}
 
   protected getTodayDateOnly(): string {
-    return dayjs().format('YYYY-MM-DD');
+    return dayjs().utcOffset(8).format('YYYY-MM-DD');
   }
 
   protected canManageAllAttendance(req: { user: RequestUser }): boolean {
diff --git a/apps/server/src/classes/classes-queries.service.ts b/apps/server/src/classes/classes-queries.service.ts
index fcd93a6..50c42ca 100644
--- a/apps/server/src/classes/classes-queries.service.ts
+++ b/apps/server/src/classes/classes-queries.service.ts
@@ -81,7 +81,7 @@ export class ClassesQueriesService {
     const existingByStudentId = new Map(
       existingClassStudents.map((classStudent) => [classStudent.studentId, classStudent]),
     );
-    const today = dayjs().utc().format('YYYY-MM-DD');
+    const today = dayjs().utcOffset(8).format('YYYY-MM-DD');
     let skipped = 0;
     const memberships = studentIds.flatMap((studentId) => {
       const existing = existingByStudentId.get(studentId);
diff --git a/apps/server/src/classes/classes.service.ts b/apps/server/src/classes/classes.service.ts
index 152e485..0508438 100644
--- a/apps/server/src/classes/classes.service.ts
+++ b/apps/server/src/classes/classes.service.ts
@@ -185,7 +185,7 @@ export class ClassesService {
         this.classStudentRepo.create({
           classId: saved.id,
           studentId: sid,
-          joinDate: dayjs().utc().format('YYYY-MM-DD'),
+          joinDate: dayjs().utcOffset(8).format('YYYY-MM-DD'),
         }),
       );
       await this.classStudentRepo.save(entries);
@@ -306,7 +306,7 @@ export class ClassesService {
     const existingByStudentId = new Map(
       existing.map((classStudent) => [classStudent.studentId, classStudent]),
     );
-    const today = dayjs().utc().format('YYYY-MM-DD');
+    const today = dayjs().utcOffset(8).format('YYYY-MM-DD');
     let skipped = 0;
     const memberships = uniqueStudentIds.flatMap((studentId) => {
       const current = existingByStudentId.get(studentId);
@@ -342,7 +342,7 @@ export class ClassesService {
     if (membership.status !== 'active') throw new BadRequestException('学生已离班');
 
     membership.status = 'left';
-    membership.leaveDate = dayjs().utc().format('YYYY-MM-DD');
+    membership.leaveDate = dayjs().utcOffset(8).format('YYYY-MM-DD');
     await this.classStudentRepo.save(membership);
     return { success: true };
   }
diff --git a/apps/server/src/occupancies/occupancy-import.service.ts b/apps/server/src/occupancies/occupancy-import.service.ts
index b6eea7e..8723378 100644
--- a/apps/server/src/occupancies/occupancy-import.service.ts
+++ b/apps/server/src/occupancies/occupancy-import.service.ts
@@ -133,7 +133,7 @@ export class OccupancyImportService {
             );
           }
 
-          const checkInDate = row.checkInDate?.trim() || dayjs().utc().format('YYYY-MM-DD');
+          const checkInDate = row.checkInDate?.trim() || dayjs().utcOffset(8).format('YYYY-MM-DD');
           const checkOutDate = row.checkOutDate?.trim();
           const billingStartDate = row.billingStartDate?.trim() || checkInDate;
           const isHistoricalRecord = Boolean(checkOutDate);
diff --git a/apps/server/src/sync/schedule-sync.service.ts b/apps/server/src/sync/schedule-sync.service.ts
index 8fa3f8c..837b311 100644
--- a/apps/server/src/sync/schedule-sync.service.ts
+++ b/apps/server/src/sync/schedule-sync.service.ts
@@ -46,7 +46,7 @@ export class ScheduleSyncService {
     opUserId = 'manager',
     attendanceMachineOnly = false,
   ): Promise<ScheduleSyncResult> {
-    const startDate = dateFrom || dayjs().utc().format('YYYY-MM-DD');
+    const startDate = dateFrom || dayjs().utcOffset(8).format('YYYY-MM-DD');
     const normalizedDays = Number.isFinite(days) ? Math.max(1, Math.floor(days)) : 30;
     const endDate = addDays(startDate, normalizedDays - 1);
 
diff --git a/apps/server/src/sync/sync.service.ts b/apps/server/src/sync/sync.service.ts
index ed6ed2f..e1bf143 100644
--- a/apps/server/src/sync/sync.service.ts
+++ b/apps/server/src/sync/sync.service.ts
@@ -305,7 +305,7 @@ export class SyncService {
   }
 
   async getScheduleSyncStatus(date?: string) {
-    return this.scheduleSyncService.getStatus(date || dayjs().utc().format('YYYY-MM-DD'));
+    return this.scheduleSyncService.getStatus(date || dayjs().utcOffset(8).format('YYYY-MM-DD'));
   }
 
   /**