title: Is it possible to have airflow backfill and scheduling at the same time?
body: <p>I am in a situation where I have started getting some data scheduled daily at a certain time and I have to create ETL for that data.</p>
  
  <p>Meanwhile, when I am still creating the DAGs for scheduling the tasks in Airflow. The data keeps on arriving daily. So when I will start running my DAGs from today I want to schedule it daily and also wants to backfill all the data from past days which I missed while I was creating DAGs.</p>
  
  <p>I know that if I put start_date as the date from which the data started arriving airflow will start backfilling from that date, but wouldn't in that case, my DAGs will always be behind of current day? How can I achieve backfilling and scheduling at the same time? Do I need to create separate DAGs/tasks for backfill and scheduling?</p>