diff --git a/rog/serializers.py b/rog/serializers.py
index e28f878..7b26f91 100755
--- a/rog/serializers.py
+++ b/rog/serializers.py
@@ -577,13 +577,9 @@ class EntrySerializer(serializers.ModelSerializer):
     event = serializers.PrimaryKeyRelatedField(queryset=NewEvent2.objects.all())
     category = serializers.PrimaryKeyRelatedField(queryset=NewCategory.objects.all())
     owner = serializers.PrimaryKeyRelatedField(read_only=True)
-    #date = serializers.DateTimeField(input_formats=['%Y-%m-%d'])  
-    date = serializers.DateField(required=False, allow_null=True)  # DateTimeFieldではなくDateFieldを使用
+    date = serializers.DateTimeField(required=False, allow_null=True)  # DateTimeFieldを使用
     zekken_number = serializers.IntegerField() 
 
-    #date = serializers.DateTimeField(default_timezone=timezone.get_current_timezone())
-
-
     class Meta:
         model = Entry
         fields = [
@@ -597,36 +593,24 @@ class EntrySerializer(serializers.ModelSerializer):
     def validate_date(self, value):
         if isinstance(value, str):
             try:
+                # 文字列をdatetimeオブジェクトに変換
                 value = datetime.strptime(value, "%Y-%m-%d")
             except ValueError:
                 raise serializers.ValidationError("Invalid date format. Use YYYY-MM-DD.")
 
-        if isinstance(value, date):
+        if isinstance(value, date) and not isinstance(value, datetime):
+            # dateオブジェクトをdatetimeオブジェクトに変換
             value = datetime.combine(value, datetime.min.time())
 
-        if timezone.is_naive(value):
+        if isinstance(value, datetime) and timezone.is_naive(value):
             return timezone.make_aware(value, timezone.get_current_timezone())
         return value
 
-
-        #if isinstance(value, date):
-        #    # dateオブジェクトをdatetimeオブジェクトに変換
-        #    value = datetime.combine(value, datetime.min.time())
- 
-        #if timezone.is_naive(value):
-        #    return timezone.make_aware(value, timezone.get_current_timezone())
-        #return value
-
     def validate_team(self, value):
         if not value.members.exists():
             raise serializers.ValidationError("チームにメンバーが登録されていません。")
         return value
 
-    def validate_date(self, value):
-        if isinstance(value, datetime):
-            return value.date()
-        return value
-
     def validate(self, data):
         team = data.get('team')
         event = data.get('event')