Dear friends of JSXGraph, this is the official announcement of the 2027 user meeting 24 hours of JSXGraph. Date: 24. - 25. February 2027 Meeting homepage: https://jsxgraph.org/24hours2027/ The 24 hours of JSXGraph will be organized by the Center of Mobile Learning with Digital Technology at the University of Bayreuth, Germany. With thanks in advance and with best regards, Carsten Miller, Alfred Wassermann (Organizers)