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https://issues.apache.org/jira/browse/AIRFLOW-2341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16470712#comment-16470712
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Yu Ishikawa commented on AIRFLOW-2341:
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[~criccomini] What do you think of it?
> Trigger timing should follow cron style when we use cron style
> schedule_interval
> --------------------------------------------------------------------------------
>
> Key: AIRFLOW-2341
> URL: https://issues.apache.org/jira/browse/AIRFLOW-2341
> Project: Apache Airflow
> Issue Type: Wish
> Components: scheduler
> Reporter: Yu Ishikawa
> Priority: Minor
>
> I understand "The Airflow scheduler triggers the task soon after the
> {{start_date + scheduler_interval}} is passed." in
> [FAQ|https://airflow.apache.org/faq.html#why-isn-t-my-task-getting-scheduled].
> However, in my opinion, the trigger timing is confusing.
> For example, when I set start_date to 2018-04-01 and set schedule_interval to
> '0 0 5 * *' in a DAG, the DAG will be triggered on 2018-05-05. In general, we
> expect the job should be trigger on 2018-04-05.
> If we adapt the cron style scheduling, it should follow the trigger timing of
> the cron style as well. Otherwise, we should have another option for the way
> of cron style scheduling, instead of schedule_interval. What do you think?
> {noformat}
> default_args = {
> 'start_date': datetime(2018, 4, 1),
> }
> dag_id = get_file_name(__file__)
> dag = DAG(
> dag_id,
> default_args=default_args,
> catchup=True,
> schedule_interval='0 0 5 * *'){noformat}
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