def METHOD_NAME(date_string):
    """Parse a string according to a Greek 8-bit date format."""
    m = _greek_date_format_re.match(date_string)
    if not m:
        return
    wday = _greek_wdays[m.group(1)]
    month = _greek_months[m.group(3)]
    rfc822date = '%(wday)s, %(day)s %(month)s %(year)s %(hour)s:%(minute)s:%(second)s %(zonediff)s' % \
                 {
                     'wday': wday,
                     'day': m.group(2),
                     'month': month,
                     'year': m.group(4),
                     'hour': m.group(5),
                     'minute': m.group(6),
                     'second': m.group(7),
                     'zonediff': m.group(8),
                 }
    return _parse_date_rfc822(rfc822date)