[GitHub] [airflow] jedcunningham commented on a change in pull request #21646: Clarify pendulum use in timezone cases

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jedcunningham commented on a change in pull request #21646:
URL: https://github.com/apache/airflow/pull/21646#discussion_r809246752



##########
File path: docs/apache-airflow/timezone.rst
##########
@@ -120,11 +121,18 @@ it is therefore important to make sure this setting is equal on all Airflow node
 .. note::
     For more information on setting the configuration, see :doc:`howto/set-config`
 
+.. _timezone_aware_dags:
+
 Time zone aware DAGs
 --------------------
 
 Creating a time zone aware DAG is quite simple. Just make sure to supply a time zone aware ``start_date``
-using ``pendulum``.
+using ``pendulum``. Don't try to use standard library
+`timezone <https://docs.python.org/3/library/datetime.html#timezone-objects>`_ as they are known to
+have limitations and we deliberately disallow using them in DAGs.
+
+, as this will throw serialization
+errors.

Review comment:
       ```suggestion
   ```
   
   Leftovers?




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