On Sundays at 12:00 International High Mass (in this international mass, both at the beginning and at the end of the celebration, the celebrant uses several languages in welcoming and farewell to pilgrims).
On Sundays there is also mass at 7:30 p.m. in Spanish.
From Monday to Saturday at 7:30 p.m. in Catalan.
Monday to Thursday: from 10:00 to 13:30 and from 17:00 to 20:30
Friday, Saturday, Sunday and holidays: from 10:00 to 20:30
Open during noon from Monday to Thursday from 1:30 p.m. to 5:00 p.m.
There are different types of visits to the Basilica (guided, by area, groups, etc.). Check the one that is more to your liking.