The Day of the Dead (Spanish: Día de (los) Muertos) is a holiday traditionally celebrated on November 1 and 2, though other days, such as October 31 or November 6, may be included depending on the locality. The multi-day holiday involves family and friends gathering to pay respects and remember friends and family members who have died. These celebrations can take a humorous tone, as celebrants remember amusing events and anecdotes about the departed. It is widely observed in Mexico, where it largely developed, and is also observed in other places, especially by people of Mexican heritage.
https://en.wikipedia.org/wiki/Day_of_the_Dead