diff --git a/apps/admin/src/views/Contents.vue b/apps/admin/src/views/Contents.vue
index 4d1f979..2b8d266 100644
--- a/apps/admin/src/views/Contents.vue
+++ b/apps/admin/src/views/Contents.vue
@@ -5,6 +5,10 @@ import type { TableInstance } from 'element-plus';
 import { useAdminLocale } from '../composables/useAdminLocale';
 import api from '../api';
 import AdminTableEmpty from '../components/AdminTableEmpty.vue';
+import {
+  normalizeStartTimeForApi,
+  normalizeStartTimeForPicker,
+} from './match-form';
 
 const { t, localeTag } = useAdminLocale();
 
@@ -311,8 +315,8 @@ function openEdit(row: ContentItem) {
     status: row.status,
     linkType: (row.linkType as '' | 'ROUTE' | 'URL') || '',
     linkTarget: row.linkTarget ?? '',
-    startTime: row.startTime ? row.startTime.slice(0, 19) : '',
-    endTime: row.endTime ? row.endTime.slice(0, 19) : '',
+    startTime: normalizeStartTimeForPicker(row.startTime ?? undefined),
+    endTime: normalizeStartTimeForPicker(row.endTime ?? undefined),
     translations: LOCALES.map((locale) => {
       const tr = byLocale.get(locale);
       return {
@@ -340,8 +344,8 @@ function buildPayload() {
     linkType: isBanner.value && form.value.linkType ? form.value.linkType : null,
     linkTarget:
       isBanner.value && form.value.linkType ? form.value.linkTarget.trim() : null,
-    startTime: form.value.startTime || null,
-    endTime: form.value.endTime || null,
+    startTime: form.value.startTime ? normalizeStartTimeForApi(form.value.startTime) : null,
+    endTime: form.value.endTime ? normalizeStartTimeForApi(form.value.endTime) : null,
     translations: form.value.translations.map((tr) => ({
       locale: tr.locale,
       title: tr.title.trim() || undefined,