In this work. we present the positioning error analysis of the 12 May 2021 moderate geomagnetic storm. The storm happened during spring in the northern hemisphere (fall in the south). We selected 868 GNSS stations around the globe to study the ionospheric and the apparent position variations. https://www.roneverhart.com/Capsule-Hats-South-Park-Collection-Cartman-Red-Brim-59Fifty-Fitted-Hat/