Sant Joan d'Oló Main Festival Activity · Santa Maria d'Oló, Moianès, Barcelona Image of Santa Maria d'Oló, not of the place itself. The Festa Major de Sant Joan d'Oló, the main settlement of the municipality of Santa Maria d'Oló, is celebrated on the first weekend of August, with a simple program of community activities, popular meals, and music. 1 d'agost Photo: Viquipèdia / Wikimedia Commons (CC BY-SA) What to see and do in Santa Maria d'Oló