St Piran's Day St Piran's Day St Piran's Day () is the county day of Cornwall, held on 5 March every year. The day is named after one of the patron saints of Cornwall, Saint Piran, who is also the patron saint of tin miners. St Piran's Day started as one of the many tinners' holidays observed by the tin miners of Cornwall. Other miners' holidays of a similar nature include Picrous Day and Chewidden Thursday. The miners of Breage and Germoe observed St Piran's feast day as that of their patron saint until at least 1764. "St. Piran's Day was said to
George S. Day George S. Day George S. Day is an educator and consultant in the fields of marketing, strategy and innovation management. He is the Geoffrey T. Boisi Professor Emeritus at the Wharton School of the University of Pennsylvania. He founded the Mack Institute for Innovation Management at the Wharton School, where he is presently Faculty Emeritus in Residence. He is best known for the concept of market-driven strategy and organization, and the outside-in approach to strategy. With Paul Schoemaker, he introduced the concept of peripheral vision of organizations. His research and consulting interests focus on competitive strategies in global markets, innovation