GitHub is hosting an event in Portsmouth, UK, at The White Swan on Tuesday, June 24th, from 7:00 pm to 10:00 pm, where attendees can meet Arfon Smith and enjoy a selection of cask ales, draught beers, and wines. Located at 26 Guildhall Walk, The White Swan, also known as Brewhouse and Kitchen, will serve as the venue for this gathering, providing an opportunity for community engagement and networking in a relaxed atmosphere.