title: celery beat schedule: run task instantly when start celery beat?
body: <p>If I create a celery beat schedule, using <code>timedelta(days=1)</code>, the first task will be carried out after 24 hours, quote celery beat documentation:</p>
  
  <blockquote>
    <p>Using a timedelta for the schedule means the task will be sent in 30 second intervals (<strong>the first task will be sent 30 seconds after celery beat starts</strong>, and then every 30 seconds after the last run).</p>
  </blockquote>
  
  <p>But the fact is that in a lot of situations it's actually important that the the scheduler run the task at launch, But I didn't find an option that allows me to run the task immediately after celery starts, am I not reading carefully, or is celery missing this feature?</p>