The event "Explore Open APIs for Government with Twilio & Open311 on May 6th" will take place on May 6th in the evening, featuring thought leaders discussing open government and open source technology. The speakers include Tim O'Reilly, Craig Newmark, Mitch Kapor, Chris Vein, and Philip Ashlock, who will share their expertise on issues such as Open311, a technology that provides open channels of communication for public space and services issues. Open311 is an evolution of the phone-based 311 systems offered by many cities in North America, offering free web API access to existing services. The event aims to highlight the importance of open APIs in government and provide insights into their potential applications.