The next GPU Hackathon that takes place in Europe will take place at the Helmholtz Information and Data Science Academy (HIDA) in Berlin on September 14-18, 2020. The goal of the 5-day hands-on workshop is for current or prospective user groups of large-scale, GPU-accelerated systems to port their applications to GPU accelerators or to further optimize already ported applications. Deadline for submitting applications is July 14, 2020.