International Marconi Day is a 24-hour amateur radio event that honors the legacy of Italian radio pioneer Guglielmo Marconi. Celebrated on the Saturday closest to Marconi's birthday, this day encourages participation in activities related to engineering, radio equipment, and communication. Observers can engage by using high-frequency (HF) radios to make point-to-point contacts, listening to online radio stations, or visiting radio museums, such as the Ye Olde Hurdy Gurdy Museum of Vintage Radio in Ireland or the Vintage Radio and Communications Museum of Connecticut in the USA. The event, hosted by the Cornish Radio Amateur Club, aims to celebrate Marconi's contributions to wireless telegraphy and inspire innovation in communication technologies. Participants are also encouraged to share information about the day on social media and learn about the historical significance of radio.