Fiesta of Jaca 2018 from June 23 to June 29. Past days. Friday, June 22 Saturday, June 23 Sunday, June 24 Monday, June 25 Tuesday, June 26 Wednesday, June 27 Thursday, June 28 Friday, June 29 You might be also interested in: Saint John 2018 - Ejea de los Caballeros (Zaragoza) - 86 Kms.