title: Resample pandas time series 30 mins for 9:15 as start time
body: <p>I am trying to resample OHLC data to 30 mins. The market data starts at at 9:15  and I would like the resampled time to have 9:15-9:45 and so on. But I am able to get the data resampled as 9:00-9:30</p>
  
  <p><a href="https://pastebin.com/c7UraZdW" rel="nofollow noreferrer">Paste Bin link to 1 min market data</a></p>
  
  <pre><code>pd.DataFrame(download_data).set_index('date'['close'].resample('30T').ohlc()
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/MsGdw.png" rel="nofollow noreferrer">As you see in the picture the start time is 9:00 and not 9:15...
  </a></p>