Religious
Immaculate Conception Fiesta (Boac)
December 8
Boac
Boac honours its patroness, the Immaculate Conception, with the town's grand December fiesta — solemn Mass at the hilltop cathedral, processions and days of community celebration that close the island's festival year.
Good to know
Exact dates can shift year to year, especially for movable feasts tied to Holy Week and town fiestas. Confirm the current schedule with the Province of Marinduque or the relevant municipal tourism office before you travel.