traildb bucket folders are not zero-padded so this validation
        checks that the keys returned by the paginator are
        *really after* the config date

def valid_date(key, config_date):
    """ traildb bucket folders are not zero-padded so this validation
        checks that the keys returned by the paginator are
        *really after* the config date
    """
    key_date = "/".join(key.split("/")[4:7])
    return parse_date(key_date) > parse_date(config_date)