title: How can I get execution_date in dag?? the outside of operator?
body: <p>How can I get an <strong><code>execution_date</code></strong> parameter in outside of dag?</p>
  
  <pre><code>execution_min = "{{execution_date.strftime('%M') }}"
  
  if execution_min == '00':
      logging.info('**** ' + "YES, It's 00")
      final_task = DummyOperator(
          task_id='task_y00',
          ...
          dag=dag
      )
  else:
      logging.info('**** ' + "NOPE!!!")
      final_task = DummyOperator(
          task_id='task_n00',
          ...
          dag=dag
      )
  </code></pre>
  
  <p>I want to set a task stream with dynamically with <code>execution_date</code> (especially minute)</p>
  
  <p>But Jinja template won't work with <code>template_fields = ['execution_date']</code></p>
  
  <p>Are there any solutions to get the execution parameter from outside of operator (= in the DAG itself) ???</p>