La Griteria is celebrated on December 7th, the day before Dia de la Virgin Maria. Literally translated La Griteria means "the outcry". A loud and boisterous crying out for the Virgin can be heard at all hours of the day.

The origins of La Griteria can be traced to Leon in 1857. Monsignor Gordiano Carranza encouraged his parishioners to visit each other's homes and erect their own alters all the while singing and shouting praise to the Virgin Mary.

"What causes so much joy?" is sung out by people traveling amongst the homes of their neighbors. The people inside their homes shout out" The Conception of Mary" in reply.

From Leon, La Griteria spread to Masaya, Managua and Granada and eventually spread across Nicaragua.