On March 4, 2025, the YouthMappers Chapter at the Institute of Remote Sensing and GIS (IRS), Jahangirnagar University, proudly celebrated Open Data Day 2025 with an impactful event titled "Mapping Resilience: Harnessing Open Data for Flood Preparedness in Sunamganj." This celebration united over 50 students in a full-day program dedicated to open data, disaster resilience, and community engagement. Why Sunamganj? Sunamganj, a flood-prone region of Bangladesh, served as the fo