code: def parse_deltat_data(fileobj):
      
      array = np.loadtxt(fileobj)
      year, month, day = array[-1,:3].astype(int)
      expiration_date = date(year + 1, month, day)
      year, month, day, delta_t = array.T
      data = np.array((julian_date(year, month, day), delta_t))
      return expiration_date, data
docs: Parse the United States Naval Observatory ``deltat.data`` file.
  
      Each line file gives the date and the value of Delta T::
  
      2016  2  1  68.1577
  
      This function returns a 2xN array of raw Julian dates and matching
      Delta T values.