Honcathon is a virtual event taking place in November, celebrating the Goose and promoting web development using the HONC stack. The HONC stack includes Hono as a web framework, Drizzle as an ORM, Neon as a database, Cloudflare Workers, and Fiberplane for debugging and testing APIs. Participants can choose from four categories to build applications, with winners receiving a €500 Amazon voucher. The event runs until December 15th, with projects designed to take half a day to a full day of work.