diff --git a/class_content/index.html b/class_content/index.html
index f8f60a5..ed15e3e 100644
--- a/class_content/index.html
+++ b/class_content/index.html
@@ -80,7 +80,7 @@
             </dl>
         </div>
     </div>
-    <div class="class-content-items" id="content-3">
+    <div class="class-content-items" id="content-4">
         <p class="class-content-items-text">第４日目</p>
         <div class="class-content-item-left">
             <dl class="class-content-dl class-content-dl-left">
@@ -103,7 +103,7 @@
             </dl>
         </div>
     </div>
-    <div class="class-content-items" id="content-4">
+    <div class="class-content-items" id="content-5">
         <p class="class-content-items-text">第5日目</p>
         <div class="class-content-item-left">
             <dl class="class-content-dl class-content-dl-left">
@@ -124,6 +124,27 @@
             </dl>
         </div>
     </div>
+    <div class="class-content-items" id="content-5">
+        <p class="class-content-items-text">第6日目</p>
+        <div class="class-content-item-left">
+            <dl class="class-content-dl class-content-dl-left">
+                <dt>日時</dt>
+                <dd>令和3年９月18日(土)午後2時から</dd>
+                <dt>場所</dt>
+                <dd>オンライン</dd>
+            </dl>
+        </div>
+
+        <div class="class-content-item-right">
+            <dl class="class-content-dl">
+                <dt>目次</dt>
+                <dd>1. 配列への値の格納について</dd>
+                <dd>2.forの使い方 </dd>
+                <dd>3.length,push,shift,sort,reverseの使い方</dd>
+                <dd>4. まとめ</dd>
+            </dl>
+        </div>
+    </div>
 </section>
 </main>