Halloween, on October 31st, is a festive night with Celtic roots (Samhain) and Christian ties (All Hallows’ Eve), marked by dressing in costumes (ghosts, witches, characters), trick-or-treating for candy, carving jack-o’-lanterns, visiting haunted places, and celebrating the harvest’s end and the blurring of worlds between living and dead. It’s a blend of spooky fun and tradition, observed globally by many.