Date does not hold hour, minute and second info

Date does not hold hour, minute and second info.
Example in itsa/lib/read_cat.py:

def read_antenna(stadb_path, code):
[...]
                date = np.array(s_line[2].split('-'), dtype=int)
                t.append(cal2decyear(date[2], date[1], date[0]))

The hour, minute and second data is in the s_line[3] field in this case and is just simply ignored in the code.
It is required in PBO offset files.
Is it sensible to discard it this way?