I can't convert 1H OHLC data into monthly data with a specific time by loffset
https://github.com/pandas-dev/pandas/issues/13218
https://github.com/pandas-dev/pandas/issues/13933
With regard to the above issues, I have the same problem. I need to convert 1 hour to monthly data, the requirement is that I need to set the beginning time interval to 17:00.

`ohlc_dict = {'open':'first', 'high':'max', 'low':'min', 'close': 'last'}`
`df = df.resample('1M', loffset='17H',closed='left',label='left').agg(ohlc_dict)`
I specified the time by `loffset='17H`' already, it just changed time label to 17:00, but it still took the Open Price from 00:00 instead of 17:00. What can I do to the get open price at 17:00 instead of 00:00? Thanks.