Our Lady of Mercy 2021 - Barcelona from September 23 to September 26. Past days. Thursday, September 23 Friday, September 24 Saturday, September 25 Sunday, September 26 You might be also interested in: Saint Michael 2021 - Molins de Rei - 18 Kms. Saint Michael 2021 - Vallromanes - 22 Kms. Fiesta of Segle XX 2021 - Segle XX - 27 Kms. Fiesta of El Cros 2021 - El Cros - 33 Kms. Fiesta of Calldetenes 2021 - Calldetenes - 64 Kms.