Why do we celebrate Halloween?
Although it’s a secular holiday today, Halloween has its roots in ancient religious and spiritual traditions that have evolved over time. The Catholic All Saints’ Day, which remembers saints and martyrs, falls on November 1, and All Souls’ Day, which honors the faithful departed, is November 2—two holidays that have to do with death and the afterlife. The night before All Saints’ Day was called All Hallow’s Eve (“hallow” meaning holy), which turned into “Halloween.”
Spirits are thought to roam the earth
All Saints’ Day was actually originally celebrated in May, but moved to November in the ninth century to incorporate the Celtic holiday of Samhain at the end of October. (Plus, it just makes sense to celebrate the dead in autumn, when the leaves die and fall from the trees.) Samhain, which marked the conclusion of the harvest season, was also the Celtic new year, the end of the summer and the beginning of the dark and deadly season of winter. At this time, the Celts believed, the veil between life and death was at its thinnest, and spirits may travel between the two words.