diff --git a/app/Http/Controllers/Admin/NewsController.php b/app/Http/Controllers/Admin/NewsController.php
index bf639e4..1a25ad1 100644
--- a/app/Http/Controllers/Admin/NewsController.php
+++ b/app/Http/Controllers/Admin/NewsController.php
@@ -146,7 +146,7 @@ class NewsController extends Controller
         if ($request->isMethod('post')) {
             $messages = [
                 'required' => ':attribute は、必ず入力してください。',
-                'open_datetime.date_format' => '公開日時は :format 形式（YYYY-MM-DD HH:MM:SS）で入力してください。',
+                'open_datetime.date_format' => '公開日時は :format 形式（YYYY-MM-DD）で入力してください。',
             ];
             $attributes = [
                 'news' => 'ニュース内容',
@@ -155,7 +155,7 @@ class NewsController extends Controller
             ];
             $v = $request->validate([
                 'news'            => 'required|string',
-                'open_datetime'   => 'required|date_format:Y-m-d H:i:s',
+                'open_datetime'   => 'required|date_format:Y-m-d', 
                 'link_url'        => 'nullable|string|max:255',
                 'image1_filename' => 'nullable|string|max:255',
                 'image2_filename' => 'nullable|string|max:255',
@@ -165,7 +165,7 @@ class NewsController extends Controller
             // 更新
             DB::table($this->table)->where($this->pk, $id)->update([
                 'news'            => $v['news'],
-                'open_datetime'   => $v['open_datetime'],
+                'open_datetime'   => $v['open_datetime'] . ' 00:00:00',
                 'link_url'        => $v['link_url'] ?? null,
                 'image1_filename' => $v['image1_filename'] ?? null,
                 'image2_filename' => $v['image2_filename'] ?? null,
diff --git a/resources/views/admin/news/add.blade.php b/resources/views/admin/news/add.blade.php
index 44abcf5..dffd2f8 100644
--- a/resources/views/admin/news/add.blade.php
+++ b/resources/views/admin/news/add.blade.php
@@ -2,202 +2,242 @@
 @section('title', 'ニュース新規作成')
 
 @section('content')
-{{-- ▼ コンテンツヘッダー（パンくず） --}}
-<div class="content-header">
-  <div class="container-fluid">
-    <div class="row mb-2">
-      <div class="col-lg-6"><h1 class="m-0 text-dark">新規</h1></div>
-      <div class="col-lg-6">
-        <ol class="breadcrumb float-sm-right text-sm">
-          <li class="breadcrumb-item"><a href="{{ route('home') }}">ホーム</a></li>
-          <li class="breadcrumb-item"><a href="{{ route('news') }}">最新ニュース登録</a></li>
-          <li class="breadcrumb-item active">新規</li>
-        </ol>
+  {{-- ▼ コンテンツヘッダー（パンくず） --}}
+  <div class="content-header">
+    <div class="container-fluid">
+      <div class="row mb-2">
+        <div class="col-lg-6">
+          <h1 class="m-0 text-dark">新規</h1>
+        </div>
+        <div class="col-lg-6">
+          <ol class="breadcrumb float-sm-right text-sm">
+            <li class="breadcrumb-item"><a href="{{ route('home') }}">ホーム</a></li>
+            <li class="breadcrumb-item"><a href="{{ route('news') }}">最新ニュース登録</a></li>
+            <li class="breadcrumb-item active">新規</li>
+          </ol>
+        </div>
       </div>
     </div>
   </div>
-</div>
 
-<section class="content">
-<div class="container-fluid">
+  <section class="content">
+    <div class="container-fluid">
 
-  {{-- ▼ バリデーションエラー表示 --}}
-  @if ($errors->any())
-    <div class="alert alert-danger"><ul class="mb-0">@foreach($errors->all() as $e)<li>{{ $e }}</li>@endforeach</ul></div>
-  @endif
-
-  {{-- ▼ 成功メッセージ表示 --}}
-  @if (session('success'))
-    <div class="alert alert-success">{{ session('success') }}</div>
-  @endif
-
-  {{-- ▼ 入力フォーム --}}
-  <div class="card">
-    <div class="card-body">
-      <form method="post" action="{{ route('news_add') }}" id="news-add-form">
-        @csrf
-
-        {{-- 基本情報 --}}
-        <div class="form-group">
-          <label>ニュース内容 <span class="text-danger">*</span></label>
-          <textarea name="news" class="form-control" rows="8" required>{{ old('news') }}</textarea>
-        </div>
-        <div class="form-group">
-          <label>公開日時 <span class="text-danger">*</span></label>
-          <input type="text" name="open_datetime" class="form-control" placeholder="YYYY-MM-DD HH:MM:SS"
-                 value="{{ old('open_datetime') }}" required>
-        </div>
-        <div class="form-group">
-          <label>リンクURL</label>
-          <input type="text" name="link_url" class="form-control" value="{{ old('link_url') }}">
+      {{-- ▼ バリデーションエラー表示 --}}
+      @if ($errors->any())
+        <div class="alert alert-danger">
+          <ul class="mb-0">@foreach($errors->all() as $e)<li>{{ $e }}</li>@endforeach</ul>
         </div>
+      @endif
 
-        {{-- 画像操作ボタン行：左=画像1、右=画像2 --}}
-        <div class="row mb-3">
-          <div class="col-md-6 mb-2">
-            <div class="btn-group">
-              <button type="button" class="btn btn-default" id="btn-image1-upload">画像1アップロード</button>
-              <button type="button" class="btn btn-default" id="btn-image1-clear">画像1削除</button>
+      {{-- ▼ 成功メッセージ表示 --}}
+      @if (session('success'))
+        <div class="alert alert-success">{{ session('success') }}</div>
+      @endif
+
+      {{-- ▼ 入力フォーム --}}
+      <div class="card">
+        <div class="card-body">
+          <form method="post" action="{{ route('news_add') }}" id="news-add-form">
+            @csrf
+
+            {{-- 基本情報 --}}
+            <div class="form-group">
+              <label>ニュース内容 <span class="text-danger">*</span></label>
+              <textarea name="news" class="form-control" rows="8" required>{{ old('news') }}</textarea>
             </div>
-            <input type="file" id="file-image1" accept="image/*" class="d-none">
-          </div>
-          <div class="col-md-6 mb-2">
-            <div class="btn-group">
-              <button type="button" class="btn btn-default" id="btn-image2-upload">画像2アップロード</button>
-              <button type="button" class="btn btn-default" id="btn-image2-clear">画像2削除</button>
+            <div class="form-group">
+              <label>公開日時<span class="text-danger">*</span></label>
+              <input type="date"
+                     name="open_date"
+                     class="form-control"
+                     value="{{ old('open_date') }}"
+                     required>
             </div>
-            <input type="file" id="file-image2" accept="image/*" class="d-none">
-          </div>
-        </div>
 
-        {{-- 画像ボックス：左=画像1、右=画像2 --}}
-        <div class="row">
-          <div class="col-md-6">
-            <div class="imgbox mb-3">
-              <div class="imgbox-title">画像1</div>
-              <div class="mb-2">
-                <label class="small text-muted d-block mb-1">画像1URLスペース</label>
-                <input type="text" name="image1_filename" id="image1_url" class="form-control" placeholder="http(s)://..." value="{{ old('image1_filename') }}">
+            <div class="form-group">
+              <label>リンクURL</label>
+              <input type="text" name="link_url" class="form-control" value="{{ old('link_url') }}">
+            </div>
+
+            {{-- 画像操作ボタン行：左=画像1、右=画像2 --}}
+            <div class="row mb-3">
+              <div class="col-md-6 mb-2">
+                <div class="btn-group">
+                  <button type="button" class="btn btn-default" id="btn-image1-upload">画像1アップロード</button>
+                  <button type="button" class="btn btn-default" id="btn-image1-clear">画像1削除</button>
+                </div>
+                <input type="file" id="file-image1" accept="image/*" class="d-none">
               </div>
-              <div>
-                <label class="small text-muted d-block mb-1">画像1表示スペース</label>
-                <div class="imgbox-preview">
-                  <img id="image1_preview" src="{{ old('image1_filename') }}" alt="" style="display: {{ old('image1_filename') ? 'block' : 'none' }};">
-                  <span id="image1_placeholder" class="text-muted" style="display: {{ old('image1_filename') ? 'none' : 'block' }};">プレビューなし</span>
+              <div class="col-md-6 mb-2">
+                <div class="btn-group">
+                  <button type="button" class="btn btn-default" id="btn-image2-upload">画像2アップロード</button>
+                  <button type="button" class="btn btn-default" id="btn-image2-clear">画像2削除</button>
+                </div>
+                <input type="file" id="file-image2" accept="image/*" class="d-none">
+              </div>
+            </div>
+
+            {{-- 画像ボックス：左=画像1、右=画像2 --}}
+            <div class="row">
+              <div class="col-md-6">
+                <div class="imgbox mb-3">
+                  <div class="imgbox-title">画像1</div>
+                  <div class="mb-2">
+                    <label class="small text-muted d-block mb-1">画像1URLスペース</label>
+                    <input type="text" name="image1_filename" id="image1_url" class="form-control"
+                      placeholder="https://..." value="{{ old('image1_filename') }}">
+                  </div>
+                  <div>
+                    <label class="small text-muted d-block mb-1">画像1表示スペース</label>
+                    <div class="imgbox-preview">
+                      <img id="image1_preview" src="{{ old('image1_filename') }}" alt=""
+                        style="display: {{ old('image1_filename') ? 'block' : 'none' }};">
+                      <span id="image1_placeholder" class="text-muted"
+                        style="display: {{ old('image1_filename') ? 'none' : 'block' }};">プレビューなし</span>
+                    </div>
+                  </div>
+                </div>
+              </div>
+
+              <div class="col-md-6">
+                <div class="imgbox mb-3">
+                  <div class="imgbox-title">画像2</div>
+                  <div class="mb-2">
+                    <label class="small text-muted d-block mb-1">画像2URLスペース</label>
+                    <input type="text" name="image2_filename" id="image2_url" class="form-control"
+                      placeholder="https://..." value="{{ old('image2_filename') }}">
+                  </div>
+                  <div>
+                    <label class="small text-muted d-block mb-1">画像2表示スペース</label>
+                    <div class="imgbox-preview">
+                      <img id="image2_preview" src="{{ old('image2_filename') }}" alt=""
+                        style="display: {{ old('image2_filename') ? 'block' : 'none' }};">
+                      <span id="image2_placeholder" class="text-muted"
+                        style="display: {{ old('image2_filename') ? 'none' : 'block' }};">プレビューなし</span>
+                    </div>
+                  </div>
                 </div>
               </div>
             </div>
-          </div>
 
-          <div class="col-md-6">
-            <div class="imgbox mb-3">
-              <div class="imgbox-title">画像2</div>
-              <div class="mb-2">
-                <label class="small text-muted d-block mb-1">画像2URLスペース</label>
-                <input type="text" name="image2_filename" id="image2_url" class="form-control" placeholder="http(s)://..." value="{{ old('image2_filename') }}">
+            {{-- 表示モード（デフォルト：非表示） --}}
+            <div class="form-group mt-3">
+              <label class="d-block">表示モード <span class="text-danger">*</span></label>
+
+              {{-- 下書き（非表示） --}}
+              <div class="form-check form-check-inline">
+                <input class="form-check-input" type="radio" name="mode" id="mode_draft" value="1" required
+                  @checked(old('mode', $row->mode ?? '') == '1')>
+                <label class="form-check-label" for="mode_draft">下書き（非表示）</label>
               </div>
-              <div>
-                <label class="small text-muted d-block mb-1">画像2表示スペース</label>
-                <div class="imgbox-preview">
-                  <img id="image2_preview" src="{{ old('image2_filename') }}" alt="" style="display: {{ old('image2_filename') ? 'block' : 'none' }};">
-                  <span id="image2_placeholder" class="text-muted" style="display: {{ old('image2_filename') ? 'none' : 'block' }};">プレビューなし</span>
-                </div>
+
+              {{-- 公開 --}}
+              <div class="form-check form-check-inline">
+                <input class="form-check-input" type="radio" name="mode" id="mode_public" value="2" @checked(old('mode', $row->mode ?? '') == '2')>
+                <label class="form-check-label" for="mode_public">公開</label>
+              </div>
+
+              {{-- 自動公開 --}}
+              <div class="form-check form-check-inline">
+                <input class="form-check-input" type="radio" name="mode" id="mode_auto" value="3" @checked(old('mode', $row->mode ?? '') == '3')>
+                <label class="form-check-label" for="mode_auto">自動公開</label>
+              </div>
+
+              {{-- 非表示 --}}
+              <div class="form-check form-check-inline">
+                <input class="form-check-input" type="radio" name="mode" id="mode_hidden" value="4" @checked(old('mode', $row->mode ?? '') == '4')>
+                <label class="form-check-label" for="mode_hidden">非表示</label>
               </div>
             </div>
-          </div>
-        </div>
 
-        {{-- 表示モード（デフォルト：非表示） --}}
-        <div class="form-group mt-3">
-          <label class="d-block">表示モード <span class="text-danger">*</span></label>
-          <div class="form-check form-check-inline">
-            <input class="form-check-input" type="radio" name="mode" id="mode_draft" value="2" required
-                   @checked(old('mode','0')=='2')>
-            <label class="form-check-label" for="mode_draft">下書き(非表示)</label>
-          </div>
-          <div class="form-check form-check-inline">
-            <input class="form-check-input" type="radio" name="mode" id="mode_public" value="1"
-                   @checked(old('mode','0')=='1')>
-            <label class="form-check-label" for="mode_public">公開</label>
-          </div>
-          <div class="form-check form-check-inline">
-            <input class="form-check-input" type="radio" name="mode" id="mode_auto" value="3"
-                   @checked(old('mode','0')=='3')>
-            <label class="form-check-label" for="mode_auto">自動公開</label>
-          </div>
-          <div class="form-check form-check-inline">
-            <input class="form-check-input" type="radio" name="mode" id="mode_hidden" value="0"
-                   @checked(old('mode','0')=='0')>
-            <label class="form-check-label" for="mode_hidden">非表示</label>
-          </div>
+            <div class="text-left">
+              <button type="button" class="btn btn-default register" id="register-btn">登録</button>
+              <!-- 変更点: class="register" を付与して app.js の汎用確認を使用 -->
+              <a href="{{ route('news') }}" class="btn btn-default">戻る</a>
+            </div>
+          </form>
         </div>
-
-        <div class="text-right">
-          <a href="{{ route('news') }}" class="btn btn-default">戻る</a>
-          <!-- 変更点: class="register" を付与して app.js の汎用確認を使用 -->
-          <button type="button" class="btn btn-default register" id="register-btn">登録</button>
-        </div>
-      </form>
+      </div>
     </div>
-  </div>
-</div>
-</section>
+  </section>
 @endsection
 
 @push('styles')
-<style>
-/* 画像ボックスの体裁 */
-.imgbox { border:1px solid #ced4da; border-radius:.25rem; }
-.imgbox-title { background:#f4f6f9; border-bottom:1px solid #ced4da; padding:.5rem .75rem; font-weight:600; }
-.imgbox-preview {
-  border:1px solid #ced4da; border-radius:.25rem; background:#f8f9fa;
-  height:200px; display:flex; align-items:center; justify-content:center; overflow:hidden;
-}
-.imgbox-preview img { max-width:100%; max-height:100%; display:block; }
-</style>
+  <style>
+    /* 画像ボックスの体裁 */
+    .imgbox {
+      border: 1px solid #ced4da;
+      border-radius: .25rem;
+    }
+
+    .imgbox-title {
+      background: #f4f6f9;
+      border-bottom: 1px solid #ced4da;
+      padding: .5rem .75rem;
+      font-weight: 600;
+    }
+
+    .imgbox-preview {
+      border: 1px solid #ced4da;
+      border-radius: .25rem;
+      background: #f8f9fa;
+      height: 200px;
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      overflow: hidden;
+    }
+
+    .imgbox-preview img {
+      max-width: 100%;
+      max-height: 100%;
+      display: block;
+    }
+  </style>
 @endpush
 
 @push('scripts')
-<script>
-// 画像プレビュー系のみ（確認ダイアログは app.js に委譲）
-(function(){
-  function bindUrlPreview(urlId, imgId, phId) {
-    const url = document.getElementById(urlId);
-    const img = document.getElementById(imgId);
-    const ph  = document.getElementById(phId);
-    if (!url || !img || !ph) return;
-    function update(){
-      const v = (url.value || '').trim();
-      if (v) { img.src = v; img.style.display='block'; ph.style.display='none'; }
-      else   { img.removeAttribute('src'); img.style.display='none'; ph.style.display='block'; }
-    }
-    url.addEventListener('input', update); update();
-  }
-  function bindUpload(btnId, fileId, urlId, imgId, phId, clearBtnId){
-    const btn = document.getElementById(btnId);
-    const file= document.getElementById(fileId);
-    const url = document.getElementById(urlId);
-    const img = document.getElementById(imgId);
-    const ph  = document.getElementById(phId);
-    const clr = document.getElementById(clearBtnId);
-    if (!btn || !file || !url || !img || !ph || !clr) return;
-    btn.addEventListener('click', ()=> file.click());
-    file.addEventListener('change', ()=>{
-      const f = file.files && file.files[0]; if (!f) return;
-      const reader = new FileReader();
-      reader.onload = e => { img.src = e.target.result; img.style.display='block'; ph.style.display='none'; };
-      reader.readAsDataURL(f);
-    });
-    clr.addEventListener('click', ()=>{
-      file.value=''; url.value='';
-      img.removeAttribute('src'); img.style.display='none'; ph.style.display='block';
-    });
-  }
+  <script>
+    // 画像プレビュー系のみ（確認ダイアログは app.js に委譲）
+    (function () {
+      function bindUrlPreview(urlId, imgId, phId) {
+        const url = document.getElementById(urlId);
+        const img = document.getElementById(imgId);
+        const ph = document.getElementById(phId);
+        if (!url || !img || !ph) return;
+        function update() {
+          const v = (url.value || '').trim();
+          if (v) { img.src = v; img.style.display = 'block'; ph.style.display = 'none'; }
+          else { img.removeAttribute('src'); img.style.display = 'none'; ph.style.display = 'block'; }
+        }
+        url.addEventListener('input', update); update();
+      }
+      function bindUpload(btnId, fileId, urlId, imgId, phId, clearBtnId) {
+        const btn = document.getElementById(btnId);
+        const file = document.getElementById(fileId);
+        const url = document.getElementById(urlId);
+        const img = document.getElementById(imgId);
+        const ph = document.getElementById(phId);
+        const clr = document.getElementById(clearBtnId);
+        if (!btn || !file || !url || !img || !ph || !clr) return;
+        btn.addEventListener('click', () => file.click());
+        file.addEventListener('change', () => {
+          const f = file.files && file.files[0]; if (!f) return;
+          const reader = new FileReader();
+          reader.onload = e => { img.src = e.target.result; img.style.display = 'block'; ph.style.display = 'none'; };
+          reader.readAsDataURL(f);
+        });
+        clr.addEventListener('click', () => {
+          file.value = ''; url.value = '';
+          img.removeAttribute('src'); img.style.display = 'none'; ph.style.display = 'block';
+        });
+      }
 
-  bindUrlPreview('image1_url','image1_preview','image1_placeholder');
-  bindUrlPreview('image2_url','image2_preview','image2_placeholder');
-  bindUpload('btn-image1-upload','file-image1','image1_url','image1_preview','image1_placeholder','btn-image1-clear');
-  bindUpload('btn-image2-upload','file-image2','image2_url','image2_preview','image2_placeholder','btn-image2-clear');
-})();
-</script>
-@endpush
+      bindUrlPreview('image1_url', 'image1_preview', 'image1_placeholder');
+      bindUrlPreview('image2_url', 'image2_preview', 'image2_placeholder');
+      bindUpload('btn-image1-upload', 'file-image1', 'image1_url', 'image1_preview', 'image1_placeholder', 'btn-image1-clear');
+      bindUpload('btn-image2-upload', 'file-image2', 'image2_url', 'image2_preview', 'image2_placeholder', 'btn-image2-clear');
+    })();
+  </script>
+@endpush
\ No newline at end of file
diff --git a/resources/views/admin/news/edit.blade.php b/resources/views/admin/news/edit.blade.php
index 846b556..f37f492 100644
--- a/resources/views/admin/news/edit.blade.php
+++ b/resources/views/admin/news/edit.blade.php
@@ -40,10 +40,15 @@
           <textarea name="news" class="form-control" rows="8" required>{{ old('news', $news->news) }}</textarea>
         </div>
         <div class="form-group">
-          <label>公開日時 <span class="text-danger">*</span></label>
-          <input type="text" name="open_datetime" class="form-control" placeholder="YYYY-MM-DD HH:MM:SS"
-                 value="{{ old('open_datetime', $news->open_datetime) }}" required>
+          <label>公開日時<span class="text-danger">*</span></label>
+<input type="date"
+       name="open_datetime"
+       class="form-control"
+       value="{{ old('open_datetime', !empty($news->open_datetime) ? \Carbon\Carbon::parse($news->open_datetime)->format('Y-m-d') : '') }}"
+       required>
         </div>
+
+        
         <div class="form-group">
           <label>リンクURL</label>
           <input type="text" name="link_url" class="form-control" value="{{ old('link_url', $news->link_url) }}">
@@ -110,34 +115,43 @@
           </div>
         </div>
 
-        {{-- 表示モード（ラジオ・必須／新規画面と同一UI） --}}
-        <div class="form-group mt-3">
-          <label class="d-block">表示モード <span class="text-danger">*</span></label>
-          <div class="form-check form-check-inline">
-            <input class="form-check-input" type="radio" name="mode" id="mode_draft" value="2" required
-                   @checked(old('mode', (string)$news->mode)=='2')>
-            <label class="form-check-label" for="mode_draft">下書き(非表示)</label>
-          </div>
-          <div class="form-check form-check-inline">
-            <input class="form-check-input" type="radio" name="mode" id="mode_public" value="1"
-                   @checked(old('mode', (string)$news->mode)=='1')>
-            <label class="form-check-label" for="mode_public">公開</label>
-          </div>
-          <div class="form-check form-check-inline">
-            <input class="form-check-input" type="radio" name="mode" id="mode_auto" value="3"
-                   @checked(old('mode', (string)$news->mode)=='3')>
-            <label class="form-check-label" for="mode_auto">自動公開</label>
-          </div>
-          <div class="form-check form-check-inline">
-            <input class="form-check-input" type="radio" name="mode" id="mode_hidden" value="0"
-                   @checked(old('mode', (string)$news->mode)=='0')>
-            <label class="form-check-label" for="mode_hidden">非表示</label>
-          </div>
-        </div>
+            {{-- 表示モード（デフォルト：非表示） --}}
+            <div class="form-group mt-3">
+              <label class="d-block">表示モード <span class="text-danger">*</span></label>
+            
+              {{-- 下書き（非表示） --}}
+              <div class="form-check form-check-inline">
+                <input class="form-check-input" type="radio" name="mode" id="mode_draft" value="1" required
+                  @checked(old('mode', $news->mode) == 1)>
+                <label class="form-check-label" for="mode_draft">下書き（非表示）</label>
+              </div>
+            
+              {{-- 公開 --}}
+              <div class="form-check form-check-inline">
+                <input class="form-check-input" type="radio" name="mode" id="mode_public" value="2"
+                  @checked(old('mode', $news->mode) == 2)>
+                <label class="form-check-label" for="mode_public">公開</label>
+              </div>
+            
+              {{-- 自動公開 --}}
+              <div class="form-check form-check-inline">
+                <input class="form-check-input" type="radio" name="mode" id="mode_auto" value="3"
+                  @checked(old('mode', $news->mode) == 3)>
+                <label class="form-check-label" for="mode_auto">自動公開</label>
+              </div>
+            
+              {{-- 非表示 --}}
+              <div class="form-check form-check-inline">
+                <input class="form-check-input" type="radio" name="mode" id="mode_hidden" value="4"
+                  @checked(old('mode', $news->mode) == 4)>
+                <label class="form-check-label" for="mode_hidden">非表示</label>
+              </div>
+            </div>
 
-        <div class="text-right">
+
+        <div class="text-left">
+          <button type="button" class="btn btn-default" id="register_edit">登録</button>
           <a href="{{ route('news') }}" class="btn btn-default">戻る</a>
-          <button type="button" class="btn btn-default" id="register_edit">保存</button>
         </div>
       </form>
     </div>