Saint Michael 2019 - Aginaga from September 29 to October 6. Past days. Saturday, September 28 Sunday, September 29 Saturday, October 5 Sunday, October 6 You might be also interested in: Fiesta of San Migel 2019 - San Migel (Biscay) - 38 Kms. Fiesta of San Miguel 2019 - San Migel (Biscay) - 46 Kms. Basque Fiesta 2019 - Ortuella (Biscay) - 67 Kms.