There's been some prior discussion on removing the requirement for a DAG without a schedule:
- https://issues.apache.org/jira/browse/AIRFLOW-3739 - https://github.com/apache/airflow/pull/5423 But why actually have the requirement at all. The documentation isn't particularly clear on why we need "start_date" and the whole idea seems somewhat confusing: https://airflow.apache.org/docs/apache-airflow/stable/faq.html#what-s-the-deal-with-start-date Consider: croniter("*/5 * * * *", start_time=None).get_next(datetime.datetime) My UTC time is "2022-05-05T12:22:16.914769" and the above expression evaluates to: 2022-05-05T12:25:00 That is, it's nicely aligned as you would expect. I would assume from reading the code that this carries over to `CronDataIntervalTimetable` since it uses croniter in exactly this way. Must we require a "start_date" – ?
