Halloween is on October 31 each year, regardless of the year, and is widely celebrated with costumes, treats, and decorations. In Japanese context, it’s commonly treated as a festive day around that date, with events and activities often planned for the weekend closest to October 31 when possible. Key points
- Date: Every year on October 31. In 2025, Halloween falls on a Friday (October 31, 2025) [2025年10月31日（金）](javascript:void(0)) [金曜](javascript:void(0)).
- Origins: Derived from ancient Celtic harvest festivals, later influenced by All Saints’ Day; modern Halloween emphasizes costumes, jack-o’-lanterns, and trick-or-treating rather than religious observance [起源と現代の習慣](javascript:void(0)).
- Common activities: Costume wearing, pumpkin lanterns, house decorations, Halloween parties, and children going door-to-door for treats in many countries and in Japan in recent years [仮装、ジャック・オー・ランタン、お菓子配り](javascript:void(0)).
If you want, I can tailor this to a specific country’s traditions or provide a short Japanese-English glossary for Halloween terms.
