Fiesta of Zaballa 2023 from April 29 to May 1. Past days. Saturday, April 29 Sunday, April 30 Monday, May 1 You might be also interested in: Saint George 2023 - Santurce - 4 Kms. Anchovy Fair 2023 - Santona (Cantabria) - 53 Kms. Fiesta of Boo de Guarnizo 2023 - Boo de Guarnizo (Cantabria) - 96 Kms.