When it comes to Halloween, we often think of costumes, bats, pumpkins, candy, trick-or-treat games ... but few people know about the interesting history of this festival.  The name "Halloween" comes from "All Hallowed’s Evening" which means "sacred evening". On October 31 and November 1 every year, Europeans all take this time to pay homage to the saints (halllow). Up to now, this name has been shortened to "Halloween". The reason Halloween falls on October 31 every year is because it is at the root of the ancient Gaelic festival of Samhain - the Old Irish meaning "End of Summer", celebrating the harvest and marking the transition of seasons. .The name "Halloween" comes from "All Hallowed, Evening" meaning "sacred evening". On October 31 and November 1 every year, all Europeans take this time to pay homage to the saints (halllow). So far, this name has been shortened to "Halloween". The reason Halloween falls on October 31 every year is because it is the root of Samhain's ancient Gaelic festival - ancient Irish meaning "End of summer", celebrating the harvest and marking the transition of the season. .