Builders Day by HackUnion

Where the OpenBuild Journey Becomes Reality Builders Day Builders Day by HackUnion is the culmination of the OpenBuild Week journey, a space where builders come together to collaborate, solve problems, build products, and compete. From learning to building.From ideas to prototypes.From campus communities to one Builders Day. This is where builders come to build. Before You Join Builders Day is not about starting your project from scratch on the final day. Projects can be developed from 28 July to 26 September, with the final submission deadline at 3:00 PM IST on 26 September. Whether you're bringing an MVP from the OBW Campus Series or building independently, come prepared with a working product. We recommend having your project ~95% complete before Builders Day. Use the final day to improve, test, scale, polish, network, showcase your work, and celebrate what you've built. Your project will be evaluated on: Accessibility Working Product Purpose & Scalability Pitching Read the Hackathon Guide Before You Start We've put together the Builders Day Participant Guide with everything you need to know — eligibility, project requirements, development timeline, judging criteria, submissions, AI and tool usage, team participation, prizes, final-day expectations, and the submission checklist. 📖 Read the complete Hackathon Guide → HACKATHON GUIDE LINK Read it. Prepare your project. Then come ready to build. Builders Day 26 September 2026 Build it. Ship it. Show what it can become.