Last year's global Birthday party was such a success, I think we should do it again :)
This event can celebrate Backdrop's 5th Birthday, and it's 16th on-time release, and for those who want, Drupal's 19th birthday as well.
I would love to see at least 5 events on that day, at various locations around the globe. I've posted the first at https://backdropcms.org/news/events.
The Twin Cities participated last year and we'll be participating again this year. We're working on the details!
Where and When Tim!