Halloween originated over 2000 years ago in Ireland among the Celtic people to mark the end of summer. Today, Halloween is celebrated on October 31 around the world, with traditions including carving jack-o-lanterns from pumpkins, children dressing up in costumes and going door-to-door seeking treats in a practice called "trick or treating", and enjoying spooky decorations like ghosts, skeletons, witches, black cats and bats. The passage encourages readers to have a fun and safe Halloween celebration.