“In Mexico, Nov. 1 and 2 are very special days because they celebrate All Saints’ Day and All Souls’ Day, respectively,” said Diana Martínez, an academic at the Institute of Anthropological Research at the National Autonomous University of Mexico, or UNAM.Día de los Muertos is celebrated not just across Mexico, but also in U.S. cities such as Los Angeles and New York, where large offerings, parades and cultural events are held. Countries like Spain, the Philippines, Brazil and Guatemala, among others, also have traditions to celebrate their deceased.