When Is Halloween? Halloween, traditionally called “All Hallows' Eve,” is celebrated on the evening before the Christian holy day of All Hallows' Day or All Saints' Day (November 1). Therefore, Halloween is always celebrated on October 31.

The belief that the souls of the dead return home on one night of the year and must be appeased seems to have ancient origins and is found in many cultures. In 19th century Ireland, "candles would be lit and prayers formally offered for the souls of the dead. After this the eating, drinking, and games would begin".

Halloween's origins can be traced back to the ancient Celtic festival known as Samhain, which was held on November 1 in contemporary calendars. It was believed that on that day, the souls of the dead returned to their homes, so people dressed in costumes and lit bonfires to ward off spirits.

Halloween in the Bible The Bible does not mention Halloween as such, for obvious reasons, since the festivity developed centuries after it was written. However, it is related to themes derived from Halloween, such as death, darkness, and spiritual or otherworldly forces.