The traditional Yoruba week has four days, and each is associated with particular orisha — the day named for Jakuta is Shango's, Ogun and Obatala have theirs, and offerings are timed accordingly, so the choice of day is part of the offering rather than a matter of convenience. Markets rotate on this four-day cycle across neighbouring towns, which is why a Yoruba market is described as a four-day or an eight-day market, and the system remains functionally alive in rural areas alongside the imported seven-day week; people operate both simultaneously. The market itself carries religious weight beyond commerce: it belongs to Oya, it is proverbially identified with the world, and it is held to be a place where the living and the dead mingle, which produces real prohibitions about who should be at market when. A tradition whose calendar, economy and cosmology are the same structure is difficult to describe as a religion in the sense the word usually carries.