This type of world view has existed until the recent years, and omagatoki (twilight hour) and ushimitsudoki (the dead of night, around 3:00 A.M. to 3:30 A.M.) were considered to mark the border of tokoyo (eternal night).
このような世界観は近年まであり、逢魔時（おうまがとき）や丑三つ時（うしみつどき）には常夜との端境である。