Gregorian Calendar introduced - October 15, 1582

This Day in History Class - A podcast by iHeartPodcasts and HowStuffWorks

On this day in 1582, Pope Gregory XIII introduced the Gregorian calendar, which was created as a way to reform the Julian calendar.  Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.