September Fiesta 2021 - Castellar del Valles from September 8 to September 13. Past days. Saturday, September 4 Wednesday, September 8 Thursday, September 9 Friday, September 10 Saturday, September 11 Sunday, September 12 Monday, September 13 You might be also interested in: September Fiesta 2021 - La Llagosta - 17 Kms. September Fiesta 2021 - Llica d'Amunt - 18 Kms. Fiesta of Terra Nostra 2021 - Terra Nostra - 19 Kms. September Fiesta 2021 - Martorellas - 21 Kms. Fiesta of Les Planes 2021 - Les Planes - 21 Kms.