August 28, 1922, was the day when New York station, WEAF, broadcasted their first radio commercial.
#RadioCommercialDay
Sources:
- https://www.npr.org/2012/08/29/160265990/first-radio-commercial-hit-airwaves-90-years-ago
- https://www.wofox.com/content-calendar/radio-commercial-dayhttps://quirkymarketingcalendar.com/today-is-radio-commercial-day/