ハロウィーン：2023年10月31日（火）

ハロウィーン（Halloween）の起源は古代ケルトの万聖節の前夜祭と言われている。新年の始まりは11月1日とされ，太陽の季節から暗闇の季節へ移る時期だという。現世と霊界との間の門が開くとされ，死者や祖先崇拝とともに，悪霊から身を守るために，ジャック・オー・ランタン（もともとはカブ，米国に伝わってからはカボチャを切り抜いて，蠟燭を立てたもの）で灯をともし，仮装を行うという。

　日本でハロウィーン行事が広まったのは，第二次世界大戦後に米国文化が日本に持ち込まれてからのことである。日本では，海外から輸入された文化を，日本風に洗練化させて，何かありがたいものに仕立てる素地があり，年々，ハロウィーンの日本化が進んでいるように見える。

Halloween：October 31st(Tuesday)

The origin of Halloween is said to be the ancient Celtic festival of the eve of All Saints' Day. It is considered the time when the new year begins, transitioning from the season of the sun to the season of darkness, as November 1st is celebrated as the new year. It is believed that the gateway between the living world and the spirit world opens during this time, and people light lanterns using Jack-o'-lanterns (originally turnips, but carved pumpkins after it spread to the United States) to protect themselves from evil spirits, along with the practice of ancestor worship and paying respect to the deceased, as well as wearing costumes.

Halloween customs began to spread in Japan after the cultural influence of the United States following World War II. In Japan, there is a tendency to refine and adapt foreign cultures in a Japanese way, turning them into something appreciated. It seems that Halloween in Japan has been gradually localized over the years.