With the reminder app Due (@dueapp), iPhone version, and iPad version, it was possible to create events on the calendar from reminder items (when?).
Recurring reminders also make the event repeat. It's a pity that you can't do it (yet?) with the Mac version.
https://twitter.com/evernote_lab/status/1613094386392498180?s=46&t=C46ewcn5n-Fcs68RHY2Y6w: