From 19bf8bf76207a01a168ec842c2e4e917adc466dd Mon Sep 17 00:00:00 2001
From: Steve Pulec <spulec@gmail.com>
Date: Wed, 22 Jan 2020 20:43:34 -0600
Subject: [PATCH] Change S3 S3_ALL_BUCKETS response to return bucket
 creation_date in iso format.

---
 moto/s3/responses.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/moto/s3/responses.py b/moto/s3/responses.py
index c8f4e082b..a04427172 100644
--- a/moto/s3/responses.py
+++ b/moto/s3/responses.py
@@ -1482,7 +1482,7 @@ S3_ALL_BUCKETS = """<ListAllMyBucketsResult xmlns="http://s3.amazonaws.com/doc/2
     {% for bucket in buckets %}
       <Bucket>
         <Name>{{ bucket.name }}</Name>
-        <CreationDate>{{ bucket.creation_date }}</CreationDate>
+        <CreationDate>{{ bucket.creation_date.isoformat() }}</CreationDate>
       </Bucket>
     {% endfor %}
  </Buckets>