diff --git a/django/contrib/comments/forms.py b/django/contrib/comments/forms.py
index 1c612362cc..05c4afebe1 100644
--- a/django/contrib/comments/forms.py
+++ b/django/contrib/comments/forms.py
@@ -1,4 +1,3 @@
-import datetime
 import time
 from django import forms
 from django.forms.util import ErrorDict
@@ -8,6 +7,7 @@ from django.contrib.comments.models import Comment
 from django.utils.crypto import salted_hmac, constant_time_compare
 from django.utils.encoding import force_unicode
 from django.utils.text import get_text_list
+from django.utils import timezone
 from django.utils.translation import ungettext, ugettext_lazy as _
 
 COMMENT_MAX_LENGTH = getattr(settings,'COMMENT_MAX_LENGTH', 3000)
@@ -138,7 +138,7 @@ class CommentDetailsForm(CommentSecurityForm):
             user_email   = self.cleaned_data["email"],
             user_url     = self.cleaned_data["url"],
             comment      = self.cleaned_data["comment"],
-            submit_date  = datetime.datetime.now(),
+            submit_date  = timezone.now(),
             site_id      = settings.SITE_ID,
             is_public    = True,
             is_removed   = False,
diff --git a/django/contrib/comments/models.py b/django/contrib/comments/models.py
index 5e128d2edb..e0ef8b3d28 100644
--- a/django/contrib/comments/models.py
+++ b/django/contrib/comments/models.py
@@ -1,4 +1,3 @@
-import datetime
 from django.contrib.auth.models import User
 from django.contrib.comments.managers import CommentManager
 from django.contrib.contenttypes import generic
@@ -7,6 +6,7 @@ from django.contrib.sites.models import Site
 from django.db import models
 from django.core import urlresolvers
 from django.utils.translation import ugettext_lazy as _
+from django.utils import timezone
 from django.conf import settings
 
 COMMENT_MAX_LENGTH = getattr(settings,'COMMENT_MAX_LENGTH',3000)
@@ -81,7 +81,7 @@ class Comment(BaseCommentAbstractModel):
 
     def save(self, *args, **kwargs):
         if self.submit_date is None:
-            self.submit_date = datetime.datetime.now()
+            self.submit_date = timezone.now()
         super(Comment, self).save(*args, **kwargs)
 
     def _get_userinfo(self):
@@ -187,5 +187,5 @@ class CommentFlag(models.Model):
 
     def save(self, *args, **kwargs):
         if self.flag_date is None:
-            self.flag_date = datetime.datetime.now()
+            self.flag_date = timezone.now()
         super(CommentFlag, self).save(*args, **kwargs)
diff --git a/django/contrib/comments/moderation.py b/django/contrib/comments/moderation.py
index 17d61dadd6..9b206a5bad 100644
--- a/django/contrib/comments/moderation.py
+++ b/django/contrib/comments/moderation.py
@@ -63,6 +63,7 @@ from django.db.models.base import ModelBase
 from django.template import Context, loader
 from django.contrib import comments
 from django.contrib.sites.models import Site
+from django.utils import timezone
 
 class AlreadyModerated(Exception):
     """
@@ -207,7 +208,7 @@ class CommentModerator(object):
                 return False
         if self.auto_close_field and self.close_after is not None:
             close_after_date = getattr(content_object, self.auto_close_field)
-            if close_after_date is not None and self._get_delta(datetime.datetime.now(), close_after_date).days >= self.close_after:
+            if close_after_date is not None and self._get_delta(timezone.now(), close_after_date).days >= self.close_after:
                 return False
         return True
 
@@ -223,7 +224,7 @@ class CommentModerator(object):
         """
         if self.auto_moderate_field and self.moderate_after is not None:
             moderate_after_date = getattr(content_object, self.auto_moderate_field)
-            if moderate_after_date is not None and self._get_delta(datetime.datetime.now(), moderate_after_date).days >= self.moderate_after:
+            if moderate_after_date is not None and self._get_delta(timezone.now(), moderate_after_date).days >= self.moderate_after:
                 return True
         return False