code: def to_array(self):
          
          return numpy.array([self.year, self.month, self.day, self.hour,
                              self.minute, self.second], dtype=float)
docs: Return a 1-dimensional |numpy| |numpy.ndarray|  with six entries
          defining the actual date (year, month, day, hour, minute, second).
  
          >>> from hydpy import Date
          >>> Date('1992-10-8 15:15:42').to_array()
          array([ 1992.,    10.,     8.,    15.,    15.,    42.])
  
          .. note::
  
             The date defined by the returned |numpy.ndarray| does not
             include any time zone information and corresponds to
             |Options.utcoffset|, which defaults to UTC+01:00.