Día de los Muertos, or the Day of the Dead, is a Mexican tradition celebrated on November 1 and 2 to honor and remember deceased loved ones, welcoming their spirits back to the living world for a brief reunion. It's a joyful, colorful celebration with roots in Indigenous Aztec customs and Spanish Catholic traditions, where families create ofrendas (altars) with offerings like food, drink, and marigolds to guide and entice the spirits home for a celebratory visit.