Dia de los Muertos(Spanish. Means Day of the Dead ). The holiday focuses on gatherings of family and friends to pray for and remember friends and family members who have died. It is particularly celebrated in Mexico, where it attains the quality of a National Holiday. The celebration takes place on November 1st and 2nd, in connection with the Catholic holidays of All Saints' Day (November 1) and All Souls' Day (November 2).