In Vietnam, Rev. Linh Nguyen and his family celebrated All Souls Day, which is usually on Nov. 2, by cleaning the family graves.
Creoles, who live primarily in south Louisiana, celebrate the day by cleaning graves and attending church services in graveyards.
Mexican Roman Catholic's celebration is called, Dia de Los Muertos or Day of the Dead. For the feast, families prepare a picnic of their deceased's favorite foods and hold vigils in graveyards.
Catholics all over the world use All Soul's Day - Commemoration of All the Faithful Departed - to remember their own mortality and pray that their loved ones join Christ in heaven after their death.
Linh, who is pastor at SS. Peter and Paul Church, explained that most people must go through purgation or a period of trial before they go to heaven. Once a person dies, no one comes back to confirm that the person went to heaven, so the living pray that the person will join Christ in everlasting life, Linh said.