michigan-micro-seasons-calendar

• https://www.npmjs.com/package/@codegouvfr/eleventy-plugin-calendar

• https://blog.r0b.io/post/host-an-ics-calendar-feed-with-eleventy/

• https://github.com/Eleventy-Meetup/website

• https://indieweb.org/event

• https://www.jvt.me/posts/2019/11/14/ditch-event-platforms-indieweb/

• https://happening.net/

• https://github.com/aaronpk/Meetable

• https://gath.io/ -https://icalendar.org/validator.html

Duplicate the collection?