Fiesta of Zaratan 2016 from May 26 to May 30. Past days. Friday, May 20 Sunday, May 22 Monday, May 23 Tuesday, May 24 Wednesday, May 25 Thursday, May 26 Friday, May 27 Saturday, May 28 Sunday, May 29 Monday, May 30 You might be also interested in: Asparagus Festival 2016 - Tudela de Duero - 25 Kms.