I’m maintaining a Minn-StF Calendar on Google. I just updated it with events from the February Einblatt!
In general, it contains Minn-StF sponsored events, readings at local bookstores that made the Einblatt!, and conventions that made the Einblatt! Errors are probably mine, although of course I might manage to faithfully copy through an error that I didn’t originate, possibly.
I’m not tempted to try to turn this into a “union of all local events” calendar; it seems more useful for each group to publish their own, and people can then use whatever combination fits their interests, without too much duplication.