Saint Matthew 2019 - Burgo de Osma-Ciudad de Osma - Saturday, September 14 Saturday, September 14↕ Friday, September 20 Saturday, September 21 Sunday, September 22 16:00 Children's Games. 18:30 Sporting activities. 21:00 Festive activities and Djs performances. Fri., Sep. 20> You can find out more on Fiestas.Net You might be also interested in: Fiesta of Arande de Duero 2019 - Aranda de Duero (Burgos) - 71 Kms.