1. Halloween has also been called All Hallows’ Eve, the eve of All Saints’ Day.

2. All Hallows’ Day (also known as All Saints’ Day) is a holiday to honor dead saints.

3. 15 Known for its witches, goblins, and other grotesque decorations and paraphernalia, Halloween —also called All Hallows’ Eve or the eve of All Saints’ Day— can be traced back to the ancient Celts of Britain and Ireland.