def _should_fetch_telegraaf_sitemap(url):
    """Decide if we should fetch a sub-sitemap from telegraaf.nl.

    Their main sitemap refers to sub-sitemaps which do not actually exist.
    """
    year, month = url.split('/')[-2:]
    year = int(year)
    return year > 2008 or (year == 2008 and month in ('oct', 'nov', 'dec'))