The event is Sunday July 19, hosted on Wikipedia Weekly Network.
Starts at 1pm Eastern / 10am Pacific on Sunday, and it will run for about 2
hours.
https://wikispore.wmflabs.org/wiki/Wikispore_Day
You can participate on the Youtube livestream here, and text chat with the
presenters and ask questions, etc:
https://www.youtube.com/watch?v=q75Fv7Snc_w
I also invite you to sign up for a lightning talk, and I will be glad to
send interested individuals with related topics to present the on-air link:
https://wikispore.wmflabs.org/wiki/Wikispore_Day#Interested_participants
Thanks,
Richard
(User:Pharos)