title: airflow - how to set the time on the web ui's tree view to UTC?
body: <p>I'm starting out with apache airflow and have a DAG up and running. </p>
  
  <p>Now I'm using the web ui to monitor the DAG runs and I cannot understand the time shown on the tree view page. This image illustrates my situation:</p>
  
  <p><a href="https://i.stack.imgur.com/3PGaP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3PGaP.png" alt="enter image description here"></a></p>
  
  <p>I don't understand the time axis shown on marker (3) on the image. The ui's time seems to be in UTC, as shown on marker (1). The selected interval is set to <code>2017-07-11 12:06:25</code> as shown on marker (2). The DAG runs depicted on the image have executed at around 11h 12h, so I cannot understand why it says 07PM on the temporal axis in the UI (marker 3). Is this expected behavior? Is the UI picking up another time zone for the diagram?</p>
  
  <p>Apart from this everything seems to be working OK.</p>