A study published in the journal Space Weather on September 16, 2026, has corrected the date of a historic event once thought to be the first known impact of a solar storm on electrical systems. The event, traditionally dated October 18, 1841, involved a train delay in Exeter, United Kingdom, caused by a magnetic disturbance linked to solar activity. However, the study by Jim Wild of Lancaster University found that the railway line connecting Exeter to Newton Abbot was not yet open in 1841, as it was completed in 1846. This discovery prompted researchers to reevaluate the timeline of the event. After reviewing local newspaper archives, the researchers identified the correct date as October 18, 1848. These archives recorded the train's passage times, confirming the railway was operational on that date. This revised date aligns with geomagnetic activity noted by the Greenwich Observatory, which was established a few years earlier. The study also highlights that another similar disturbance had been recorded on March 19, 1847, on the telegraphs of the Midland Railway. This date is now considered the oldest confirmed case of a solar storm affecting electrical systems. The research underscores the long-standing vulnerability of electrical systems to geomagnetic events, which are caused by solar activity that can disrupt Earth's magnetic field. Such disturbances can interfere with power grids, communication systems, and other technologies that rely on electrical signals. The study emphasizes the importance of archival records in understanding historical impacts and improving preparedness for future events. By correcting the timeline of this early event, the research provides a more accurate historical context for the interaction between solar activity and human technology. It also serves as a reminder of the need for continued study of space weather and its potential effects on modern infrastructure.