Halloween is celebrated on the evening of October 31st and marks the beginning of Allhallowtide, a series of Christian holidays meant to remember the dead such as loved ones, saints, and martyrs ¹.

The current Halloween customs can be traced back to the pagan traditions of ancient Celtics, particularly the festival called “Samhain” which means summer’s end. It is part of their preparation for the gloomy winter ¹.

Celtics believed that the boundary with the Otherworld is weaker during Samhain, allowing spirits to pass through and walk among us. People left food offerings outside their homes to appease the spirits ¹.

Source: (1) 62 Interesting Facts About Halloween – The Fact File. https://thefactfile.org/halloween-facts/.