Hack Days is a day for hacking/chatting/sharing whatever projects you're working on. Themes are bots, robotics, autonomous agents, control systems, distributed systems, cryptocurrency, hacking, math, machine learning, artificial intelligence.
We live stream it so anyone around the world can participate and ask questions, share what they're working on, etc.
The facebook group where the live stream goes:
The event is held every Sunday from 2p until 5p typically in Church.
Look for Dan (https://twitter.com/dpg) or just ask around. :)