 The days correspond to the four cardinal points and are its names in Igbo, èké east, órìè west, àfọ̀ north, ǹkwọ́ south.The Nri-Igbo claim the market days to have been introduced to the Igbo by their divine progenitor and king Eri in the 9th century after encountering the days as deities.These alusi are venerated as the primary or as a major deity under Chineke in parts of Igboland.