Participants of the 25th Satellite-Based Augmentation Systems (SBAS) Interoperability Working Group, taking place on 25–27 June in St Petersburg, Russia, photographed beside Russia’s Svetloe Radio Astronomy Observatory. Equipped with a 32 m-diameter antenna, this site is part of the Very Long Baseline Interferometry network for high-resolution radio astronomy. It is also hosting a reference station for the System of Differential Correction and Monitoring, Russia’s forthcoming SBAS network.