Miniscale time of start time

I have meet a problem about the miniscale time.
I import plotly.figure_factory

and using dict(Task=‘Machine %s’ % (m), Start=‘2019-06-1 %s’ % (str(j_record[(j, m)][0])),

  •                   Finish='2019-06-1 %s' % (str(j_record[(j, m)][1])), Resource='Job %s' % (j + 1))*
    

and then

but in fact i justed want start time from 08:00 2019-06-01

I don not know how to realize it??