name, url, language, country
FSFE Events, https://fsfe.org/events/events.en.rss, en-US, Germany
FSFE Events (FR), https://fsfe.org/events/events.fr.rss, fr-FR, Germany
FSFE Events (DE), https://fsfe.org/events/events.de.rss, de-DE, Germany
cblgh.org - events, https://cblgh.org/events.xml, en-US, Worldwide
IndieWeb Events, https://events.indieweb.org/feed, en-US, Germany
Monero Observer, https://monero.observer/feed-calendar.xml, en-US, Worldwide