0 in certain countries, especially Mexico, the name for All Souls' Day (2 November), when people who have died are remembered:
They have decorated the graves for Day of the Dead, the traditional Mexican celebration of the deceased.
Halloween and the Day of the Dead share a common origin in the Christian commemoration of the dead on All Saints' and All Souls' Day.
Around my house I have little Mexican skulls for the Day of the Dead, and other jovial reminders of my own mortality.
