Summer Fiesta 2021 - Buitrago del Lozoya - Monday, August 16 Thursday, August 12 Friday, August 13 Saturday, August 14 Sunday, August 15 Monday, August 16↕ 12:00 concert. 12:00 Mass. <Sun., Aug. 15 You can find out more on Fiestas.Net You might be also interested in: August Fiesta 2021 - Valverde del Majano (Segovia) - 69 Kms. Saint Roch 2021 - Roa (Burgos) - 89 Kms.