Updated was_published_recently() tutorial test to check boundary condition.

docs/intro/tutorial05.txt

@@ -285,7 +285,7 @@ more comprehensively:
         was_published_recently() should return False for questions whose
         pub_date is older than 1 day.
         """
-        time = timezone.now() - datetime.timedelta(days=30)
+        time = timezone.now() - datetime.timedelta(days=1)
         old_question = Question(pub_date=time)
         self.assertIs(old_question.was_published_recently(), False)
 
@@ -294,7 +294,7 @@ more comprehensively:
         was_published_recently() should return True for questions whose
         pub_date is within the last day.
         """
-        time = timezone.now() - datetime.timedelta(hours=1)
+        time = timezone.now() - datetime.timedelta(hours=23, minutes=59, seconds=59)
         recent_question = Question(pub_date=time)
         self.assertIs(recent_question.was_published_recently(), True)